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Voice Android SDK Changelog



Welcome to the Programmable Voice Android SDK

welcome-to-the-programmable-voice-android-sdk page anchor

The Twilio Programmable Voice SDKs allow you to add voice-over-IP (VoIP) calling into your native Android applications. See Android Getting Started Guide(link takes you to an external page) to begin using the SDK.

(information)

Info

As of June 2023, legacy Firebase Cloud Messaging (FCM) credentials have been deprecated and will be removed in June 2024, please upgrade to FCM v1 credentials as soon as possible. The Android Voice SDK already supports FCM v1 credentials and a migration guide(link takes you to an external page) has been prepared to help aid developers through the process. For information about the deprecation, please visit Google's announcement(link takes you to an external page).

(warning)

Warning

The Twilio Programmable Voice SDKs use Semantic Versioning(link takes you to an external page). Twilio supports version N-1 for 12 months after the first GA release of version N. We recommend that you upgrade to the latest version as soon as possible to avoid any breaking changes. Version 6.x is the latest Android version.


Dec 3rd 2024

Bug Fixes

bug-fixes page anchor
  • Fixed a bug where the signaling library was throwing an exception while initiating a call with per-app based VPN enabled.
ABIAPK Size Impact
x864.5MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4.1MB
universal16MB

Oct 21st 2024

  • New API Voice.runPreflight(@NonNull final Context context, @NonNull final String accessToken, @NonNull final PreflightTest.Listener listener) to run a preflight test is added.
  • A new class PreflightOptions is added. A const reference to this class type needs to be passed as the first argument to the runPreflight() method. An instance of this class can be constructed using the PreflightOptions.Builder. Setting the accessToken to run preflight test is mandatory. Following are the optional APIs for the PreflightOptions.Builder class.
1
Builder setIceOptions(@NonNull IceOptions iceOptions);
2
Builder setPreferredAudioCodecs(@NonNull List<AudioCodec> preferredAudioCodecs);

The API documentation for the above-mentioned methods can be found in the PreflightOptions.Builder class.

  • A new PreflightTest.Listener interface is added. It needs to be provided as the third argument to the runPreflight() method. This interface provides the callbacks for the PreflightTest. Implement the following callbacks to receive callbacks during the preflight test and to receive the PreflightReport when the test is completed. The report is a JSONObject containing the details of its findings.
1
void onPreflightCompleted(@NonNull final PreflightTest preflightTest, @NonNull final JSONObject report);
2
void onPreflightFailed(@NonNull final PreflightTest preflightTest, @NonNull final CallException error);
3
void onPreflightConnected(final PreflightTest preflightTest);
4
void onPreflightWarning(@NonNull final PreflightTest preflightTest,
5
@NonNull final Set<Call.CallQualityWarning> currentWarnings,
6
@NonNull final Set<Call.CallQualityWarning> previousWarnings);
7
void onPreflightSample(@NonNull final PreflightTest preflightTest, @NonNull final JSONObject sample);

The API documentation for the above-mentioned methods can be found in the PreflightTest.Listener interface.

  • Voice.runPreflight() method returns a PreflightTest object. Following APIs can be used to access different properties of underlying Call and PreflightTest object.
1
void stop();
2
String getCallSid();
3
long getStartTime();
4
long getEndTime();
5
JSONObject getLatestSample();
6
JSONObject getReport();
7
PreflightTest.State getState();

Please note stop() method can be used to prematurely disconnect a PreflightTest resulting in a failure. Please refer to the API documentation of the PreflightTest class for more details.

ABIAPK Size Impact
x864.5MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4.1MB
universal16MB

Sep 10th 2024

  • The Voice SDK now supports Server Name Indication (SNI) during initial TLS handshake with Twilio infrastructure.
  • The CallMessage.Builder.setContentType() API has no effect on the content type of the Call Message object. The content type always defaults to application/json.
ABIAPK Size Impact
x864.4MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.7MB

Sep 3rd 2024

  • Added support for Android 15 with 16k memory page sizes.

Known Issues

known-issues-1 page anchor
  • The CallMessage.Builder.setContentType() API has no effect on the content type of the Call Message object. The content type always defaults to application/json.
ABIAPK Size Impact
x864.3MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

Aug 26th 2024

  • The Call Message Events (Beta), originally released in 6.3.3, has been promoted to GA. This release includes the following breaking changes from the beta.
    • Changed error code 31209 to 31212. This error code is emitted when a call message payload exceeds the authorized limit.
    • Call Message types (CallMessage.messageType) are treated as strings instead of enumerated values.
      • The SDK no longer validates CallMessage.messageType and acts as a pass through for unknown message types in both directions (messages received by the SDK and those sent by the SDK).
      • To send a user defined message, the sendMessage() API should be invoked with a CallMessage object where the messageType is set to one of the supported message types from https://www.twilio.com/docs/voice/sdks/call-message-events(link takes you to an external page)
      • Added new error code 31210 for invalid call message type when sendMessage() API is invoked with a CallMessage object where the messageType is not set to user-defined-message.
    • Call.CallMessageListener methods have been updated to include the CallSid, which is a unique identifier for the Call or the CallInvite. The updated APIs are:
1
public interface CallMessageListener {
2
3
void onMessageReceived(final String callSid, final CallMessage callMesssage);
4
5
void onMessageSent(final String callSid, final String voiceEventSID);
6
7
void onMessageFailure(final String callSid, final String voiceEventSID, final VoiceException error);
8
}
  • Fixed issue preventing execution on Android API 21-23 devices starting with version 6.3.0.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
  • The CallMessage.Builder.setContentType() API has no effect on the content type of the Call Message object. The content type always defaults to application/json.
ABIAPK Size Impact
x864.3MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

June 3rd, 2024

  • Added new error code 31211 when sendMessage() API is invoked with a CallMessage object using the CallInvite object when the CallInvite is not reached the Ringing state yet. onMessageFailure() callback will be invoked in this case with the above mentioned error code.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.3MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

May 21st, 2024

  • New constant-audio-output-level call quality warning added. This warning is triggered when the audio received is of a constant volume and can be used to determine when someone is speaking. Please note, if the remote party mutes the audio track or places the call on hold, this warning will still be raised.
  • Metrics and events reported to Twilio Insights is now encoded via gzip to reduce transmission bandwidth.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.3MB
x86_644.3MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

April 15th, 2024

  • Increased sampling resolution of Voice Insights call quality metrics events.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864.3MB
x86_644.2MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

Mar 12th, 2024

  • A new AudioOptions API has been added, enabling audio processing operations on the local audio track/source.
    • Audio processing operations include Echo Cancellation, Automatic Gain Control, Noise Suppression, High Pass Filtering, setting jitter buffer max size in packets, and setting jitter buffer min delay in milliseconds (msec).
    • By default, all audio processing operations are enabled (set to true), the jitter buffer's maximum size is 200 packets, and the jitter buffer's minimum delay is 0 msec.
    • The default values can be modified and custom AudioOptions can be set as part of ConnectOptions when making outbound calls and/or as part of AcceptOptions when receiving incoming calls.
  • Example of customized AudioOptions when making an outbound call - In this example, Automatic Gain Control and High Pass Filtering are disabled, jitter buffer max size is set to 100 packets and jitter buffer min delay is set to 5 msec.
1
connectOptions = new ConnectOptions.Builder(accessToken)
2
.iceOptions(iceOptions)
3
.audioOptions(new AudioOptions.Builder()
4
.autoGainControl(false)
5
.highpassFilter(false)
6
.audioJitterBufferMaxPackets(100)
7
.audioJitterBufferMinDelayMs(5)
8
.build())
9
.build();
10
Voice.connect(context, connectOptions, callListener);
  • Example of customized AudioOptions when receiving an incoming call - In this example, Echo Cancellation and Noise Suppression are disabled, and jitter buffer max size is set to 50 packets.
1
acceptOptions = new AcceptOptions.Builder()
2
.iceOptions(iceOptions)
3
.audioOptions(new AudioOptions.Builder()
4
.echoCancellation(false)
5
.noiseSuppression(false)
6
.audioJitterBufferMaxPackets(50)
7
.build())
8
.build();
9
callInvite.accept(context, acceptOptions, callListener);
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

The following table outlines the APK size impact for different Application Binary Interfaces (ABIs):

ABIAPK Size Impact
x864.3MB
x86_644.2MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

Feb 12th, 2024

  • Call.CallMessageListener methods have been updated to include the CallSid, which is a unique identifier for the Call or the CallInvite. The updated APIs are:
1
public interface CallMessageListener {
2
3
void onMessageReceived(final String callSid, final CallMessage callMesssage);
4
5
void onMessageSent(final String callSid, final String voiceEventSID);
6
7
void onMessageFailure(final String callSid, final String voiceEventSID, final VoiceException error);
8
9
}
  • LogParameters class includes a Throwable field named tr. This allows us to log stack traces from Exceptions and other Throwable objects.
  • LogParameters objects can now be constructed using LogParameters.Builder() that utilizes a builder pattern avoiding multi argument cumbersome direct constructors.
  • The existing constructors for LogParameters have been deprecated in favor of construction using LogParamters.Builder() and will be removed in the next major release.
  • Removed dead/unused c/c++ jni method, Java_com_twilio_voice_JniUtils_nativeJavaUtf16StringToStdString. This is somewhat related to github issue 572(link takes you to an external page).
  • Added new Call Exception, InvalidCallerIdException that happens when a call is attempted with an invalid caller id error 13214.
  • Report the usage of Default Logger or Custom Logger to Twilio Insights. It only reports the type of Logger but not the actual log messages.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.3MB
x86_644.2MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

Nov 30th, 2023

  • Upgraded to use WebRTC-112.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.3MB
x86_644.2MB
armeabi-v7a3.4MB
arm64-v8a4MB
universal15.6MB

Nov 9th, 2023

  • The SDK now supports sending and receiving in-call user-defined messages. Use the Call::sendMessage(...) method to send messages. Endpoints subscribed to the events of the call will be receiving the messages. The CallMessageInterface::onReceiveMessage(...) callback will be raised to the application when a message is received by the client. Please visit this page for more details about this feature. Additionally, please see the following for more information on how to send and receive messages on the server. This feature is currently in Beta. Example below.
1
private static class TestCallMessageObserver implements Call.CallMessageListener {
2
@Override
3
public void onMessageReceived(CallMessage callMesssage) {
4
Log.d("[test]", "Call Message received");
5
}
6
@Override
7
public void onMessageSent(String voiceEventSID) {
8
Log.d("[test]", "Call Message:" + voiceEventSID + " sent");
9
}
10
@Override
11
public void onMessageFailure(String voiceEventSID, VoiceException error) {
12
Log.d("[test]", "Call Message: " + voiceEventSID + " failed to send: " + error.getMessage());
13
}
14
}
15
.
16
.
17
.
18
// register notification callbacks upon connect
19
ConnectOptions cxnOptions = new ConnectOptions.Builder(accessToken))
20
.callMessageListener(new TestCallMessageObserver())
21
.build();
22
Call call = Voice.connect(context, connectOptions, new Call.Listener() {...});
23
.
24
.
25
.
26
// send a message
27
final CallMessage callMessage = (
28
new CallMessage.Builder(CallMessage.MessageType.UserDefinedMessage))
29
.contentType("application/json")
30
.content((new JSONObject())
31
.put("foo", "bar")
32
.toString())
33
.build();
34
call.sendMessage(callMessage);
35
.
36
.
37
.
38
// receive call message before accpeting invite
39
Voice.handleMessage(this, data, new TestCallMessageObserver());
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.8MB
x86_644.8MB
armeabi-v7a3.6MB
arm64-v8a4.5MB
universal17.4MB

Oct 2nd, 2023

  • Adds a thread member to LogParameters class. The thread member contains the name (or id) of the thread where the log message was generated.
  • Fixed a crash when the incoming call listener goes out of scope after timeout.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.8MB
x86_644.8MB
armeabi-v7a3.6MB
arm64-v8a4.5MB
universal17.4MB

Sept 5th, 2023

  • Provides a LoggerInterface interface. This interface contains a log method that is invoked with a LogParameters object every time a log message becomes available. The LogParameters object contains all the information relevant to the log message being delivered.
  • The Android SDK internally implements the LoggerInterface to provide default logging capabilities to stdout using android.util.Log.
  • Provides a Voice.SetLogger(LoggerInterface) method that allows setting a custom logger that conforms to LoggerInterface to which log messages will be delivered.
  • Provides a Voice.GetLogger() method that returns the logger that was previously set with setLogger. If no custom logger was set, this method returns the default logger currently used by the SDK.
  • Users can send their messages to be logged by the SDK using Voice.GetLogger().log(LogParameters). This logs the message using the SDK's default logger.
  • Users can also implement custom loggers that conform to LoggerInterface to customize the logging mechanism, for eg., logging to a file, sending the logs to a server, etc.
  • The existing Logger class is deprecated and will be removed in the next major version release.
  • Starting with SDK version 6.3.0, the required Android SDK version is 24 not 21. This issue is fixed as of SDK version 6.6.2.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

Size Report

ABIAPK Size Impact
x864.8MB
x86_644.8MB
armeabi-v7a3.6MB
arm64-v8a4.5MB
universal17.3MB

June 23rd, 2023

Fixed a bug where the incoming call invite could only ring up to 3 minutes instead of the maximum 10 minutes call timeout.

  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864.8MB
x86_644.8MB
armeabi-v7a3.6MB
arm64-v8a4.5MB
universal17.3MB

June 12th, 2023

  • Upgraded to use WebRTC-105.
  • AudioOption, typing_detection is now deprecated, no longer supported by WebRTC.
  • Fixed a crash when using an external audio device due to JAVA stack frame not being constructed.
  • Fixed a crash due to file handle exhaustion.
  • Fixed memory leaks regarding WebRTC shutdown & lingering Media Factory references.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864.8MB
x86_644.8MB
armeabi-v7a3.6MB
arm64-v8a4.5MB
universal17.3MB

July 11th, 2022

  • New edge umatilla is now supported. Set the Voice.setEdge(...) property before connecting or accepting the call.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.9MB

May 26th, 2022

  • Fixed a crash when the home region specifier (twr) in the access token is null.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.9MB

May 9th, 2022

  • The Voice Android SDK now supports Twilio Regional by providing the home region specifier in the access token header when calling the Voice.register() method, the Voice.unregister() method, or the Voice.connect() method.

Existing customers can now migrate their Voice use-cases to data centers in Ireland or Australia to establish data residency within the region. In addition, new customers may now select Ireland or Australia as their region of choice for Voice related use cases. There is no additional cost to use the new data centers in Ireland or Australia. To learn more about Regional Voice, check out our blog post(link takes you to an external page) or head over to our developer docs to get started.

Below is an example of specifying home region in the access token using the Twilio Node.js(link takes you to an external page) helper library:

1
const accessToken = new twilio.jwt.AccessToken(
2
credentials.accountSid,
3
credentials.apiKeySid,
4
credentials.apiKeySecret, {
5
identity,
6
ttl,
7
region: 'au1',
8
},
9
);

The decoded header of your access token should look like this:

1
{
2
"alg": "HS256",
3
"typ": "JWT",
4
"cty": "twilio-fpa;v=1",
5
"twr": "au1"
6
}
  • The SDK compileSDKVersion and targetSDKVersion were updated to 31.
  • Updated getStats(...) API doc.
  • Fixed IceCandidatePairStats javadoc. Added responsesSent attribute to IceCandidatePairStats.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.9MB

February 8th, 2022

  • Upgraded SDK to build with Java 11.
  • Updated the SDK to Android Gradle Plugin 7.0.4.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.9MB

November 19, 2021

  • Updated the SDK to Android Gradle Plugin 4.2.2.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.8MB

November 5, 2021

  • Upgraded the SDK to use AndroidX.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.8MB

November 2, 2021

  • The minimum Android SDK version has been increased from 16 to 21.
  • The voice SDK now validates full remote domain names while setting up the TLS connection.
  • Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_644MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.8MB

May 24, 2021

  • This release is based on Chromium WebRTC 88.
  • The SDK uses Unified Plan SDP semantics instead of Plan-B.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x864MB
x86_643.9MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
universal14.8MB

March 29, 2021

  • Voice Android artifacts are now published to MavenCentral instead of Bintray.

    • Ensure to include mavenCentral() listed in your project's buildscript repositories section:

      1
      buildscript {
      2
      repositories {
      3
      mavenCentral()
      4
      ...
      5
      }
      6
      }
  • Voice Android SDK now publishes the checksum in the release notes.

  • Fixed a crash when onNetworkChanged was called during the teardown process.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x863.9MB
x86_643.9MB
armeabi-v7a3.2MB
arm64-v8a3.7MB
universal14.4MB

March 11, 2021

  • Fixed a potential bug in the core module where the Logger could be accessed after being destroyed by another thread.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIAPK Size Impact
x863.9MB
x86_643.9MB
armeabi-v7a3.2MB
arm64-v8a3.7MB
universal14.4MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

January 26, 2021

  • Updated the SDK to Android Gradle Plugin to 4.1.1.
ABIAPK Size Impact
x863.9MB
x86_643.8MB
armeabi-v7a3.2MB
arm64-v8a3.7MB
universal14.3MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

January 5, 2021

  • Fixed a bug where caller did not receive the onDisconnected callback with error when the callee hung up.
  • Fixed a bug where callee did not receive the onCancelledCallInvite callback with error when signaling connection error happened.
  • Private IP addresses are masked in Release mode for the SDK logs and the ice-candidate Insights event payload.
  • Private IP addresses will not be masked in Debug mode. The selected-ice-candidate-pair event will contain private IP address of the local active ICE candidate for debugging purpose in both Release and Debug modes.
  • Stop publishing Voice Insights event with invalid access token.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIApp Size Increase
universal14.3MB
armeabi-v7a3.2MB
arm64-v8a3.7MB
x863.9MB
x86_643.8MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

September 29th, 2020

  • The SDK compileSDKVersion and targetSDKVersion were updated to 30 from 28. No changes are required to migrate to this version in an existing application.
ABIApp Size Increase
universal14.3MB
armeabi-v7a3.2MB
arm64-v8a3.7MB
x863.9MB
x86_643.8MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

September 16, 2020

  • The Voice Android SDK uses Chromium WebRTC 83.
  • The Voice Android SDK is built with NDK r20b.
  • PeerConnection state is now reported to Insights.
  • mos calculation algorithm has been updated to make it monotonically decreasing with increasing jitter and packets-lost-fraction values over a range of rtt values. The final mos should always be in the range [1.0, 4.6].
Event GroupLevelEvent NameDescription
pc-connection-stateDEBUGnewRaised when peer connection state is new
pc-connection-stateDEBUGconnectingRaised when peer connection state is connecting
pc-connection-stateDEBUGconnectedRaised when peer connection state is connected
pc-connection-stateDEBUGdisconnectedRaised when peer connection state is disconnected
pc-connection-stateERRORfailedRaised when peer connection state is failed
pc-connection-stateDEBUGclosedRaised when peer connection state is closed
  • A new Insights event selected-ice-candidate-pair is reported with the active local ICE candidate and remote ICE candidate.
Event GroupLevelEvent NameDescription
ice-candidateDEBUGselected-ice-candidate-pairRaised when the active local and remote ICE candidates of the peer connection are determined
  • Defined new error code
Error CodesErrorCodeError Message
53407EXCEPTION_MEDIA_DTLS_TRANSPORT_FAILEDMedia connection failed due to DTLS handshake failure
  • Fixed a crash bug when processing empty stats reports or stats reports without remote audio tracks.

The table below highlights the updated App Size Impact.

ABIApp Size Impact 5.3.0App Size Impact 5.5.0
universal15.2MB14.3MB
armeabi-v7a3.3MB3.2MB
arm64-v8a3.8MB3.7MB
x864MB3.9MB
x86_644.1MB3.8MB
ABIApp Size Increase
universal14.3MB
armeabi-v7a3.2MB
arm64-v8a3.7MB
x863.9MB
x86_643.8MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

September 14, 2020

  • Fixed a crash bug when processing empty stats reports or stats reports without remote audio tracks.
ABIApp Size Increase
universal15.3MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864.1MB
x86_644.2MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

September 1, 2020

  • Fixed a bug when attempting to execute work on the worker thread from a custom audio device.
  • Upgraded to Android Gradle Plugin 4.0.0 and Gradle 6.1.1
  • Starting with Voice Android SDK 5.4.1, the SDK is no longer binary compatible with applications that target Java 7. In order to use this and future releases, developers must upgrade their applications to target Java 8. Follow the snippet below for reference:
1
android {
2
compileOptions {
3
sourceCompatibility 1.8
4
targetCompatibility 1.8
5
}
6
}
ABIApp Size Increase
universal15.3MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864.1MB
x86_644.2MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

July 9, 2020

  • A CallerInfo object is introduced to represent information about the caller. Currently, this information is limited to SHAKEN/STIR status of incoming PSTN Calls, but may later be expanded to include CNAM, and other endpoint types. isVerified attribute represents whether or not the caller's phone number has been verified by Twilio using SHAKEN/STIR validation. The value of this attribute is true if the caller has been validated at 'A' level, false if the caller has been verified at any lower level or has failed validation. If SHAKEN/STIR information is unavailable for the caller or stir status value is null, the value of this attribute will be null.

  • CallInvite class includes getCallerInfo(..) method that returns the CallerInfo of the caller.

For details on how Twilio uses SHAKEN/STIR to make trusted calls and protect against unlawful spoofing, please visit /docs/voice/trusted-calling-using-shakenstir.

  • Fixed crash bugs during teardown of a Call.
ABIApp Size Increase
universal15.3MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864.1MB
x86_644.2MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

June 23, 2020

  • Fixed a bug in Voice.setRegion(..) API that disallowed to use non default values.
ABIApp Size Increase
universal15.2MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864.1MB
x86_644.1MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

June 3, 2020

  • A new Call.Listener callback onCallQualityWarningsChanged() is introduced.
1
void onCallQualityWarningsChanged(Call call,
2
Set<CallQualityWarning> currentWarnings,
3
Set<CallQualityWarning> previousWarnings);

The Set that contain the warnings are consisted of enum with values of the newly introduced CallQualityWarning

1
public enum CallQualityWarning {
2
WARN_HIGH_RTT("high-rtt"),
3
WARN_HIGH_JITTER("high-jitter"),
4
WARN_HIGH_PACKET_LOSS("high-packet-loss"),
5
WARN_LOW_MOS("low-mos"),
6
WARN_CONSTANT_AUDIO_IN_LEVEL("constant-audio-input-level"),
7
}

The trigger conditions for the warnings defined in the enumeration are defined as follows:

  • WARN_HIGH_RTT - Round Trip Time (RTT) > 400 ms for 3 out of last 5 samples.
  • WARN_HIGH_JITTER - Jitter > 30 ms for 3 out of last 5 samples.
  • WARN_HIGH_PACKET_LOSS - Raised when average packet loss > 3% in last 7 samples. Cleared when average packet loss <= 1% in last 7 samples.
  • WARN_LOW_MOS - Mean Opinion Score (MOS) < 3.5 for 3 out of last 5 samples.
  • WARN_CONSTANT_AUDIO_IN_LEVEL - Raised when the standard deviation of audio input levels for last 10 samples is less than or equals 1% of the maximum possible audio input level (32767) i.e. 327.67 and the call is not in the muted state and the call is not on hold. Cleared when the standard deviation of audio input levels for last 10 samples is greater than 3% of the maximum possible audio input level.
  • A new method getCallQualityWarnings() is added to Call to retrieve the present set of call quality related warnings.
  • This release also adds the Mean Opinion Score (MOS) measurement mos to RemoteAudioTrackStats. Use Call.getStats() API during a call to retrieve the score. The mos is computed once per second. Since the MOS is calculated from network performance measurements, it can be used to indicate the current network condition to the user to provide better usability. See API Docs(link takes you to an external page) for more information.

Example:

1
call.getStats(new StatsListener() {
2
@Override
3
public void onStats(@NonNull List<StatsReport> statsReports) {
4
for (StatsReport statsReport : statsReports) {
5
List<RemoteAudioTrackStats> remoteAudioStatsList = statsReport.getRemoteAudioTrackStats();
6
for (RemoteAudioTrackStats remoteAudioStats : remoteAudioStatsList) {
7
float mos = remoteAudioStats.mos;
8
}
9
}
10
}
11
});
  • This release includes support for the expansion of Twilio's Global Infrastructure via Edge Locations which allows customers to control their connectivity into and out of Twilio's platform. The Voice Android SDK uses these Edges to connect to Twilio's infrastructure via the new property Voice.edge. This new property supersedes the now deprecated Voice.region. See the new Edge names and how they map to the old region names.

Here is an example:

1
// Connect using global low latency
2
Voice.setEdge("roaming")

Below are the new methods signatures introduced in Voice class.

1
@NonNull public static String getEdge();
2
public static void setEdge(@NonNull String edge)

The following APIs have been deprecated in favor of the new methods.

1
@NonNull public static String getRegion();
2
public static void setRegion(@NonNull String region)
  • Added a Boolean property enableIceGatheringOnAnyAddressPorts in CallOptions that allows gathering of ICE candidates from "any address" ports. This allows applications to work in certain VPN environments.

Reference the following code snippet to enable or disable this feature. Note, enableIceGatheringOnAnyAddressPorts is disabled by default.

Configure enableIceGatheringOnAnyAddressPorts with ConnectOptions

1
ConnectOptions connectOptions = new ConnectOptions.Builder(accessToken)
2
.enableIceGatheringOnAnyAddressPorts(iceGatheringOnAnyAddressPorts)
3
.build();
4
Voice.connect(context, connectOptions, callListener);

Configure enableIceGatheringOnAnyAddressPorts with AcceptOptions

1
AcceptOptions acceptOptions = new AcceptOptions.Builder()
2
.enableIceGatheringOnAnyAddressPorts(iceGatheringOnAnyAddressPorts)
3
.build();
4
callInvite.accept(context, acceptOptions, callListener);
ABIApp Size Increase
universal15.2MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864.1MB
x86_644.1MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

April 27, 2020

The AudioDevice API is an advanced API that can be used to create innovative and sophisticated in-app audio capabilities. For example, enable pre-recorded messages to be played in-call, or apply noise reduction algorithms before playing out the received audio.

An AudioDevice is a logical device that is used to capture and render audio. The captured audio is sent to the remote party, and the received audio is rendered locally. By default, the SDK uses DefaultAudioDevice(link takes you to an external page) which uses the mic for capturing and the local speaker/earpiece/headset for rendering. The AudioDevice API allows for the creation of custom audio capturers and renderers. See this example(link takes you to an external page) and API docs(link takes you to an external page) to learn more about custom audio devices.

The AudioDevice feature requires additional native APIs that result in a small increase in SDK size. The table below highlights the updated App Size Impact.

ABIApp Size Impact 5.1.1App Size Impact 5.2.0
universal14.9MB15.1MB
armeabi-v7a3.3MB3.3MB
arm64-v8a3.8MB3.9MB
x864MB4MB
x86_644.1MB4.1MB
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.

March 20th, 2020

  • Fixed data types in event payload for Voice Insights events.
  • Fixed Voice Insights data with valid transport id value.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIApp Size Increase
universal15 MB
armeabi-v7a3.3MB
arm64-v8a3.9MB
x864MB
x86_644.1MB

February 28, 2020

  • An ongoing call will automatically switch to a more preferred network type if one becomes available. The following are the network types listed in preferred order: ETHERNET, LOOPBACK, WIFI, VPN, and CELLULAR. For example, if a WIFI network becomes available whilst in a call that is using CELLULAR data, the call will automatically switch to using the WIFI network.
  • Attempts to re-establish the media connection will be done preemptively if no media flow is detected for 3 seconds.
  • Fixed data types in event payload for Voice Insights events.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIApp Size Increase
universal15MB
armeabi-v7a3.3MB
arm64-v8a3.9MB
x864MB
x86_644.1MB

December 6, 2019

  • The HttpsURLConnection thread is now tagged using Traffic.setThreadStatsTag. This change prevents warnings and/or crashes when an App is started using strictMode.
  • Application name, id, version, build number, and min/major sdk version are now published to Insights. This helps with isolating problems if an issue is encountered.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIApp Size Increase
universal14.9MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x864MB
x86_644.1MB

November 19, 2019

  • Incoming call handling improvements. Previously, if we encountered network issues before an incoming call was answered or rejected, we disconnected the call. With this release, we will continue to try and establish a connection to Twilio for a maximum of 40 seconds before we disconnect the call.

  • We now publish the negotiated codec and its associated parameters to Insights.

Event GroupLevelEvent NameDescription
settingsINFOcodecRaised when the codec has been selected
  • Improved the way we perform DNS resolution. Previously, some DNS requests could indirectly block the main thread. This is no longer the case.
  • Releases prior to 6.6.3 do not support Android 15 with 16k pages.
ABIApp Size Increase
universal14.9MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x864MB
x86_644.1MB

October 28, 2019

This release introduces an update to the Programmable Voice call model. To upgrade your application please follow the migration guide(link takes you to an external page).

Prior to 5.0.0, when Voice.register(...) is invoked, the Voice SDK registers for two push notifications: a call and cancel push notification. The call and cancel push notification payloads could then be passed as arguments to Voice.handleMessage(...) and your application would be provided with a callback via MessageListener indicating if the message was a CallInvite or CancelledCallInvite.

Starting with 5.0.0, when Voice.register(...) is invoked, the Voice SDK will register for call push notifications and cancelled call invites will be determined via a signaling connection. Voice.handleMessage(...) no longer processes cancel push notification payloads and will return false if provided with a cancel message. As a result, developers must re-register via Voice.register(...) after upgrading their application to 5.0.0 to stop receiving cancel push notifications.

CallInvite and CancelledCallInvite updates

callinvite-and-cancelledcallinvite-updates page anchor

A valid call push notification, when passed to Voice.handleMessage(...), will still result in a CallInvite being raised to the provided MessageListener. A CancelledCallInvite will be raised to the provided MessageListener if any of the following events occur:

  • The call is prematurely disconnected by the caller.
  • The callee does not accept or reject the call within 30 seconds.
  • The Voice SDK is unable to establish a connection to Twilio.

A CancelledCallInvite will not be raised if a CallInvite is accepted or rejected.

To provide observability for incoming call cancellations the following Insights events have been added:

Event GroupLevelEvent NameDescription
connectionINFOlistenRaised when an attempt to listen for cancellations is made
connectionINFOlisteningRaised when an attempt to listen for cancellations has succeeded
connectionINFOcancelRaised when a cancellation has been reported
connectionERRORlistening-errorRaised when an attempt to listen for cancellation has failed
registrationERRORunsupported-cancel-message-errorRaised when a "cancel" push notification is processed by the SDK. This version of the SDK does not support "cancel" push notifications
  • MessageListener.onCancelledCallInvite has been updated to the following signature.

    void onCancelledCallInvite(@NonNull CancelledCallInvite cancelledCallInvite, @Nullable CallException callException)

    The provided CallException will indicate if a call was cancelled as the result of an error. If no error occurred, then the CallException is null.

  • Both Voice.handleMessage(...) methods require an Android Context as the first argument.

  • CallInvite class includes isValid(...) utility method to validate whether the payload is a valid notification sent by Twilio. A valid notification payload will result in a CallInvite being raised via MessageListener.onCallInvite(...) callback when passed to Voice.handleMessage(...).

  • Enabling insights and setting the region are now specified on the Voice class. These options were previously accessible on ConnectOptions and AcceptOptions.

    • Sending stats data to Insights is enabled by default.
    • The default region uses Global Low Latency routing, which establishes a connection with the closest region to the user.

    Below are the new methods signatures introduced in Voice class.

    1
    public static boolean isInsightsEnabled();
    2
    public static void enableInsights(boolean enable);
    3
    @NonNull public static String getRegion();
    4
    public static void setRegion(@NonNull String region)
  • Introduced a new error code that gets surfaced when handleMessage(..) API is called with push notification bundle with twilio.voice.cancel as the twi_message_type.

Error CodeLevelError MessageDescription
31302ErrorUnsupported Cancel Message ErrorThis version of the SDK no longer supports processing cancel push notification messages. You must register via Voice.register(...) with this version of the SDK to stop receiving cancel push notification messages. Cancellations are now handled internally and reported to you on behalf of the SDK.
  • CLIENT-6757 Updated the Android Gradle Plugin to 3.5.0 and Gradle to 5.4.1.
ABIApp Size Increase
universal14.9MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x864MB
x86_644MB


August 20th, 2019

Differentiated Services Code Point (DSCP) Tagging API

differentiated-services-code-point-dscp-tagging-api page anchor

The Differentiated Services Code Point (DSCP)(link takes you to an external page) Tagging API allows you to mark the audio packets with Expedited Forwarding (EF) for the purposes of improved packet routing. This behavior is enabled by default. When enabled, supporting networks will prioritize audio packet delivery for improved audio quality.

Reference the following code snippet to control enabling DSCP.

Configure DSCP with ConnectOptions

1
ConnectOptions connectOptions = new ConnectOptions.Builder(accessToken)
2
.enableDscp(enableDscp)
3
.build();
4
Voice.connect(context, connectOptions, callListener);

Configure DSCP with AcceptOptions

1
AcceptOptions acceptOptions = new AcceptOptions.Builder()
2
.enableDscp(enableDscp)
3
.build();
4
callInvite.accept(context, acceptOptions, callListener);
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

August 2nd, 2019

Custom Parameters in Canceled Call Notification

custom-parameters-in-canceled-call-notification page anchor

You can now retrieve the custom parameters set in your TwiML application from CancelledCallInvite. With this addition, you can for example, display a missed call notification with the caller's display name retrieved from the CancelledCallInvite getCustomParamaters().

For more information, refer to the API docs(link takes you to an external page)

1
// Pass custom parameters in TwiML
2
<?xml version="1.0" encoding="UTF-8"?>
3
<Response>
4
<Dial answerOnBridge="false" callerId="client:alice">
5
<Client>
6
<Identity>bob</Identity>
7
<Parameter name="caller_first_name" value="alice" />
8
<Parameter name="caller_last_name" value="smith" />
9
</Client>
10
</Dial>
11
</Response>

cancelledCallInvite.getCustomParameters() returns a map of key-value pair passed in the TwiML.

1
"caller_first_name" -> "alice"
2
"caller_last_name" -> "smith"
  • CLIENT-5845 Insights events ringing in the connection group guarantees to include CallSid.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.2MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

July 29th, 2019

  • CLIENT-6428 The SDK Android Gradle Plugin was updated from 3.3.2 to 3.4.2 and the Gradle version was updated from 4.10.3 to 5.1.1.
  • CLIENT-6331 OpenSLES(link takes you to an external page) is now disabled by default for both incoming and outgoing calls unless explicitly enabled. To enable OpenSLES, execute the following before invoking Voice.connect(...) or CallInvite.accept(...): tvo.webrtc.voiceengine.WebRtcAudioManager.setBlacklistDeviceForOpenSLESUsage(false).
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.2MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

July 24th, 2019

  • The SDK compileSDKVersion and targetSDKVersion SDK was updated to 28 from 27. No changes are required to migrate to this version in an existing application.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

July 12th, 2019

Max Average Bandwidth API

max-average-bandwidth-api page anchor

By default, Opus codec is set up with a bitrate of around 32kbps (40-50kbps on the wire). With this release, you are able to set a custom max average bitrate transmission to better control how much bandwidth your VoIP application should use. See RFC-7587 7.1(link takes you to an external page) for information about Max Average Bitrate.

The main purpose of this API is to set a lower max average bitrate to minimize bandwidth usage. This is particularly useful in deployments where bandwidth is a premium. Where bandwidth is not of concern, you do not need to use this API.

Max Average Bitrate can be set to as low as 6,000bps and as high as 51,000bps. Values outside this range are ignored and the default Opus operation mode is used. See API Docs(link takes you to an external page) for more information.

As would be expected, lowering the max average bitrate impacts audio quality. We don't recommend setting max average bitrate to a value below 8,000bps. On the other hand, setting values over 32,000bps will have negligible audio quality improvements.

For example, to set a new max average bitrate to 16,000bps:

1
ConnectOptions connectOptions = new ConnectOptions.Builder(accessToken)
2
.params(params)
3
.preferAudioCodecs(Arrays.asList( new OpusCodec(16000)))
4
.build();
5
Call call = Voice.connect(VoiceActivity.this, connectOptions, callListener);
  • Programmable Voice Android SDK transmits data for VoIP calls and for Insights(link takes you to an external page). With this release, we have reduced Insights related data consumption by around 25%. This was accomplished by reducing the events reporting interval.
  • The SDK now reports ice-candidate events to Insights. These events are raised when OnIceCandidate is called on the PeerConnection.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

June 28th, 2019

This release introduces the new Reconnecting State API. This API adds a new state RECONNECTING to Call.State and two new Call.Listener() callbacks, onReconnecting(...) and onReconnected(...).

Call reconnection capability has been available since SDK 3.0. For example, if a call is established over a Wi-Fi network and the Wi-Fi network becomes unavailable, the SDK will automatically switch the call over to the next available network.

This release adds the reconnection related callbacks. onReconnecting(...) indicates when a call is being reconnected due to a network disruption or network switch over and onReconnected(...) is called once the call has been re-connected. You can use this information to provide intuitive feedback to your App user when a reconnection is taking place.

Please refer to our migration guide(link takes you to an external page) for more information about migrating from 3.x.

ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

June 26th, 2019

  • Insights events reconnecting and reconnected in the connection group are now documented in the Javadoc for the Call class.
  • CLIENT-6218 Insights events 53001/Signaling connection disconnected and 53405/Media connection failed in the connection group that are raised when attempting to reconnect are now raised with Insights level "warning". Previously, they were raised with level "error".
  • CLIENT-6257 Added AddressIncompleteException to indicate that the number of the callee is malformed.
Error CodeError Message
31484Address Incomplete
  • CLIENT-6205 Fixed an issue where a 31408/Request Timeout would result in a 31005/Connection error
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

June 21st, 2019

  • CLIENT-6282 The SDK can now be compiled alongside the Programmable Video SDK. Please perform the following steps to properly upgrade to 3.2.0
    • Modify the classpath of any java files used from org.webrtc.* to tvo.webrtc.*. Calling APIs to any class in org.webrtc.* will have no effect within the Voice SDK.
    • Perform the following modifications to your proguard file when compiling the Voice SDK for a release build with obfuscation.
      • Change -keep class org.webrtc.** { *; } to -keep class tvo.webrtc.** { *; }
      • Change -dontwarn org.webrtc.** to -dontwarn tvo.webrtc.**
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

June 20th, 2019

  • CLIENT-6246 Fixed bug on API 19 and below where the SDK would incorrectly surface a REGISTRATION_ERROR_CODE/31301 exception for calls to Voice.register(...) or Voice.unregister(...) when a EXCEPTION_INVALID_ACCESS_TOKEN/20101 actually occurred.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

June 12th, 2019

  • Switched CI provider for build, test, and release pipeline.
  • The Twilio CDN will no longer host the Voice Android aar artifacts or Javadocs. All artifacts and javadocs previously hosted on the Twilio CDN will remain.

If you are downloading Voice Android SDK artifacts from the Twilio CDN then there are two options available moving forward.

  1. Follow our Get Started with the Programmable Voice SDKs.
  2. Download the artifacts directly from Bintray(link takes you to an external page).

All Javadocs back to 3.0.0-preview1 are now hosted on Github Pages(link takes you to an external page) with the following URL scheme. https://twilio.github.io/twilio-voice-android/docs/{version}

ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

May 16th, 2019

We now surface more details about errors encountered during Voice.register(...)(link takes you to an external page), Voice.unregister(...)(link takes you to an external page), Voice.connect(...)(link takes you to an external page), and CallInvite.accept(...)(link takes you to an external page). Previously, these functions reported these errors with the generic error REGISTRATION_ERROR_CODE/31301(link takes you to an external page) or EXCEPTION_CONNECTION_ERROR/31005(link takes you to an external page).

With the new error codes, you can make more informed decisions about how to remedy the problem. For example, error code EXCEPTION_BAD_REQUEST and EXCEPTION_TOO_MANY_REQUEST indicate potential programming issues, while EXCEPTION_ACCESS_TOKEN_REJECTED indicates an issue with your Access Token.

Please note, you may need to change your code if you have added special handling for REGISTRATION_ERROR_CODE/31301(link takes you to an external page) or EXCEPTION_CONNECTION_ERROR/31005(link takes you to an external page).

For more information see the API docs(link takes you to an external page)

The following is a summary of the new codes available for Voice.register(...) and Voice.unregister(...):

Error CodeError Message
31400Bad Request
31403Forbidden
31404Not Found
31408Request Timeout
31409Conflict
31426Upgrade Required. This is most likely related to a TLS version not accepted by Twilio's infrastructure
31429Too Many Requests
31500Internal Server
31502Bad Gateway
31503Service Unavailable
31504Gateway Timeout

The following is a summary of the new codes available for Voice.connect(...) and CallInvite.accept(...):

Error CodeError Message
31009Transport error
31400Bad Request
31403Forbidden
31404Not Found
31408Request Timeout
31480Temporarily Unavailable
31481Call/Transaction Does Not Exist
31486Busy Here
31487Request Terminated
31500Internal Server
31502Bad Gateway
31503Service Unavailable
31504Gateway Timeout
31530DNS Resolution Error
31600Busy Everywhere
31603Decline
31604Does Not Exist Anywhere
  • CLIENT-6077 The SDK reports error events to Insights when exception occurs during registration/unregistration.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

April 25th, 2019

We have promoted 3.0.0-beta13 to 3.0.0. Reference our migration guide(link takes you to an external page) to upgrade your applications to 3.0.0.

ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

April 18th, 2019

  • CLIENT-5981 The SDK erroneously raised multiple call quality warnings events to Insights.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

April 17th, 2019

  • CLIENT-5974 Removed unused error CallConnectionTimeoutException, AudioDeviceErrorException, SignalingConnectionErrorCode, SignalingConnectionTimeoutErrorCode, SignalingIncomingMessageInvalidErrorCode, SignalingOutgoingMessageInvalidErrorCode, ConfigurationAcquireFailedErrorCode, ConfigurationAcquireTurnFailedErrorCode from the CallException error code class.
  • CLIENT-5935 Fixed a bug where constant audio level warning Insights events are reported when the call is muted or on hold.
  • CLIENT-5951 Fixed a bug where "packets_lost" field was missing in the metric event.
  • CLIENT-5954 Fixed a bug where the SDK reported integer MOS score with "low-mos" warning event.
  • Client 5978 Fixed a bug where the SDK reported double values for packets_lost_fraction to Insights instead of integer.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

April 12th, 2019

  • CLIENT-5899 Fixed an issue where in rare cases a call got disconnected during call setup due to frequent network changes.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

April 4th, 2019

  • CLIENT-5379 Fixed an issue where WiFi to WiFi network handoff was causing one-way audio followed by Call disconnect.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

April 2nd, 2019

  • CLIENT-5828, CLIENT-5868 A network change that occurs during a reconnection will now trigger another reconnection attempt ensuring media is restored on the correct network.
  • CLIENT-5882 Call metrics insights will always be available when the Call is in Call.State.CONNECTED state including after a network handover.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

March 27th, 2019

  • Attempts to connect a call via Voice.connect(...) or CallInvite.accept(...) that fail prior to reaching the connected state will always raise an onConnectFailure(...) with an error code. However, if Call.disconnect() is called while an attempt to connect or accept a call is made, the onDisconnected(...) will be raised with no error.
  • CLIENT-5808 CLIENT-5809 Updated the API documentation for CallInvite.accept.
  • CLIENT-5811 Updated the API documentation for Call.
  • CLIENT-5813 Network loss scenarios that resulted in a call failure now raise the onConnectFailure(...) callback. Previously these scenarios erroneously raised onDisconnected(...).
  • CLIENT-5754 A call that fails as a result of not establishing a media connection prior to being connected now raises the onConnectFailure(...) callback. Previously this scenario erroneously raised onDisconnected(...).
  • CLIENT-5821 The packets_lost_fraction value reported to Insights is correctly computed and within the expect range of 0 to 100.
  • CLIENT-5835 Events were erroneously reported to Insights when the ConnectOptions.enableInsights property was set to false.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

March 19th, 2019

  • The getFrom() method from CallInvite and CancelledCallInvite is now nullable in case the value is not available in the call invite message.
  • CLIENT-5800: Fixed an issue where an incoming call invite that did not contain a from field was not considered a valid message.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

March 14th, 2019

  • CLIENT-5742 Removed context parameter in handleMessage(...) API.
  • CLIENT-5353 Built with an audio only variant of WebRTC 67 where SCTP is disabled.
ABIApp Size Increase
universal14.7MB
armeabi-v7a3.3MB
arm64-v8a3.8MB
x863.9MB
x86_644MB

March 4th, 2019

  • CLIENT-5534 Added IceCandidateStats and IceCandidatePairStats to StatsReport.

  • CLIENT-5516 Reduced connection time by removing a hostname lookup
  • CLIENT-5688 Retry failed DNS resolution during reconnect
  • CLIENT-5612 Fixed bug where Call may get disconnected when ipv6 WiFi network disappears when LTE connection is on

  • CLIENT-5578 CLIENT-5688 Fixed bug where WiFi to WiFi network handover may disconnect the Call while LTE connection is on

  • CLIENT-5576 LTE to WiFI handover may cause one way audio.
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
  • CLIENT-5882 Call metrics insights becomes unavailable after a network handover during a call.
ABIApp Size Increase
universal15.4MB
armeabi-v7a3.4MB
arm64-v8a4MB
x864.1MB
x86_644.2MB

February 12th, 2019

  • CLIENT-5539 Fixed bug in HttpsURLConnection management where input, output, and error streams were not closed.
  • CLIENT-5578 WiFi to WiFi handover may disconnect the Call.
  • CLIENT-5576 LTE to WiFI handover may cause one way audio.
  • CLIENT-5612 IPv6 WiFi to IPv4 LTE handover may disconnect the Call.
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
  • CLIENT-5882 Call metrics insights becomes unavailable after a network handover during a call.
ABIApp Size Increase
universal15.4MB
armeabi-v7a3.4MB
arm64-v8a4MB
x864.1MB
x86_644.2MB

February 7th, 2019

  • CLIENT-5599 Added VoiceException.EXCEPTION_ACCESS_TOKEN_REJECTED. This error is raised when attempting to authenticate with a token that is invalid.
  • CLIENT-5587 Removed Context argument from Voice.register(...) and Voice.unregister(...).
  • SDK publishes call Insights. Publishing is enabled by default. The preference can be updated by calling ConnectOptions.Builder.enableInsights(boolean) and AcceptOptions.Builder.enableInsights(boolean).
  • Implemented network handoff. Signaling and media connection renegotiation are now automatically attempted after network changes.
  • Added Call.postFeedback(...) API. This API posts the feedback collected for this call to Twilio. If no parameters are passed, Twilio will report feedback was not available for this call.
  • CLIENT-2985 The SDK can connect to Twilio's Servers in an IPv6 environment.
  • CLIENT-5569 Fixed bug where SDK does not explicitly use the application context when required. getApplicationContext is now invoked internally on context arguments passed to public API methods when an application context is required.
  • CLIENT-5591 Added FATAL definition to LogLevel enum.
  • CLIENT-5578 WiFi to WiFi handover may disconnect the Call.
  • CLIENT-5576 LTE to WiFI handover may cause one way audio.
  • CLIENT-5612 IPv6 WiFi to IPv4 LTE handover may disconnect the Call.
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
  • CLIENT-5882 Call metrics insights becomes unavailable after a network handover during a call.
ABIApp Size Increase
universal15.3MB
armeabi-v7a3.4MB
arm64-v8a4MB
x864.1MB
x86_644.2MB

December 12th, 2018

  • Added new error code 31008. This error is raised when a CallInvite is accepted after a call has ended.
  • ConnectOptions.Builder.preferAudioCodecs(...) and AcceptOptions.Builder.preferAudioCodecs(...) were added to set preferred audio codecs.
  • CLIENT-5398 Unmuting a call on hold causes audio to flow.
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4673 Error codes 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal15.3MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864.1MB
x86_644.1MB

November 24th, 2018

  • Documented the default log level LogLevel.ERROR in getLogLevel and getLogModuleLevel javadoc.
  • Added media and signaling related error codes.
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.=
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4673 Error codes 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
  • CLIENT-5398 Unmuting a call on hold causes audio to flow.
ABIApp Size Increase
universal15.1MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864MB
x86_644.1MB

October 30th, 2018

  • The Android Voice SDK is built with an audio only variant of WebRTC 67. The table below shows the size reduction from compiling with an audio only variant release:

    ABI3.0.0-preview5 App Size Increase3.0.0-preview6 App Size Increase
    universal17.8MB15.1MB
    armeabi-v7a4MB3.4MB
    arm64-v8a4.6MB3.9MB
    x864.9MB4MB
    x86_644.9MB4.1MB
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-5062 Calls made to a client or PSTN number that have a long duration before answering may not get connected.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4673 Error codes 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal15.1MB
armeabi-v7a3.4MB
arm64-v8a3.9MB
x864MB
x86_644.1MB

October 1st, 2018

  • Added custom parameters to CallInvite with a new method called getCustomParamaters().
1
// Pass custom parameters in TwiML
2
<?xml version="1.0" encoding="UTF-8"?>
3
<Response>
4
<Dial answerOnBridge="false" callerId="client:alice">
5
<Client>
6
<Identity>bob</Identity>
7
<Parameter name="caller_first_name" value="alice" />
8
<Parameter name="caller_last_name" value="smith" />
9
</Client>
10
</Dial>
11
</Response>

callInvite.getCustomParameters() returns a map of key-value pair passed in the TwiML.

1
"caller_first_name" -> "alice"
2
"caller_last_name" -> "smith"
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-5062 Calls made to a client or PSTN number that have a long duration before answering may not get connected.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4673 Error codes 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal17.8MB
armeabi-v7a4MB
arm64-v8a4.6MB
x864.9MB
x86_644.9MB

September 27th, 2018

  • Upgraded to WebRTC 67

  • Upgraded to Java 8. Add the following snippet to your build.gradle to enable Java 8 features required to build the 3.x Voice Android SDK:

    1
    android {
    2
    compileOptions {
    3
    sourceCompatibility 1.8
    4
    targetCompatibility 1.8
    5
    }
    6
    }
  • Report registration and unregistration events to Twilio Insights.

  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-5062 Calls made to a client or PSTN number that have a long duration before answering may not get connected.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4672, CLIENT-4673 Error codes 20157 and 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal18.1MB
armeabi-v7a4.1MB
arm64-v8a4.7MB
x865MB
x86_645MB

September 4th, 2018

  • Nullability annotations have been added. Methods that expect @NonNull parameters throw NullPointerException. Methods that validate parameters for a specified input throw IllegalStateException if invalid.
  • Moved CallState to Call.State
  • Provide a stateless mechanism for processing push messages related to call invites and call invite cancellations. This API no longer raises errors when processing invalid messages, instead a boolean value is returned when handleMessage(context, data) is called. The Boolean value is true when the provided data results in a CallInvite or CancelledCallInvite. If handleMessage(context, data) returns false it means the data provided was not a Twilio Voice push message. The CallInvite has an accept() and reject() method. While the CancelledCallInvite provides the to, from, and callSid fields also available in the CallInvite. The method getCallSid() can be used to associate a CallInvite with a CancelledCallInvite.
    • Migrated the API CallInvite to CallInvite and CancelledCallInvite.
1
// Processing push messages in 2.X
2
handleMessage(context, data, new MessageListener() {
3
@Override
4
void onCallInvite(CallInvite callInvite) {
5
// Check state and process invite
6
if (callInvite.getState().equals(PENDING)) {
7
// Show notification to answer or reject call
8
} else if(callInvite.getState().equals(CANCELLED)) {
9
// Hide notification
10
}
11
}
12
13
@Override
14
void onError(MessageException messageException) {
15
// Invalid data was provided
16
}
17
});
18
19
// Processing push messages in 3.X
20
boolean handled = handleMessage(context, data, new MessageListener() {
21
@Override
22
void onCallInvite(CallInvite callInvite) {
23
// Show notification to answer or reject call
24
}
25
26
@Override
27
void onCancelledCallInvite(CancelledCallInvite callInvite) {
28
// Hide notification
29
}
30
});
31
32
if(!handled) {
33
// This message is not a Twilio voice push message
34
}
  • Introduced call.getStats() method that returns a list of StatsReport with metrics for all the audio tracks in a call.
1
call.getStats(new StatsListener() {
2
@Override
3
public void onStats(@NonNull List<StatsReport> statsReports) {
4
// Process statsReports
5
}
6
});
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-5062 Calls made to a client or PSTN number that have a long duration before answering may not get connected.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4698 Params that are passed to your TwiML Application while making calls are not URL encoded
  • CLIENT-4547 Insights is not published
  • CLIENT-4672, CLIENT-4673 Error codes 20157 and 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal20.7MB
armeabi-v7a4.5MB
arm64-v8a5.4MB
x865.8MB
x86_645.5MB

August 27th, 2018

  • Introduced CallState.RINGING
  • Introduced a new callback method Call.Listener.onRinging(). This callback is emitted once before the Call.Listener.onConnected() callback when the callee is being alerted of a Call. The behavior of this callback is determined by the answerOnBridge flag provided in the Dial verb of your TwiML application associated with this client. If the answerOnBridge flag is false, which is the default, the Call.Listener.onConnected() callback will be emitted immediately after Call.Listener.onRinging(). If the answerOnBridge flag is true, this will cause the call to emit the onConnected callback only after the call is answered. See answeronbridge for more details on how to use it with the Dial TwiML verb. If the TwiML response contains a Say verb, then the call will emit the Call.Listener.onConnected callback immediately after Call.Listener.onRinging() is raised, irrespective of the value of answerOnBridge being set to true or false
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-5062 Calls made to a client or PSTN number that have a long duration before answering may not get connected.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4698 Params that are passed to your TwiML Application while making calls are not URL encoded
  • CLIENT-4547 Insights is not published
  • CLIENT-4672, CLIENT-4673 Error codes 20157 and 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal20.7MB
armeabi-v7a4.5MB
arm64-v8a5.4MB
x865.8MB
x86_645.5MB

August 15th, 2018

This is the first WebRTC based release using Chromium WebRTC 57.

This SDK introduces ConnectOptions and AcceptOptions to allow developers to make behavioral changes associated with a Call.

This SDK allows multiple active Calls to be managed by the application.

  • Migrated the enum PJSIP in LogModule to a more granular set of enums (CORE, PLATFORM, SIGNALING and WEBRTC)
  • Introduced ConnectOptions to allow developers to make behavioral changes associated with the call
  • Migrated the API to make a Call from Voice.call(...) to Voice.connect(...)
1
// Making a call in 2.X
2
Voice.call(context, accessToken, params, listener);
3
4
// Making a call in 3.X
5
ConnectOptions connectOptions = new ConnectOptions.Builder(accessToken)
6
.setParams(params)
7
.build();
8
Voice.connect(context, connectOptions, listener);
9
  • Migrated the API to accept a CallInvite using AcceptOptions
1
// Accepting a call in 2.X
2
CallInvite.accept(context, listener);
3
4
// Accepting a call in 3.X
5
AcceptOptions acceptOptions = new AcceptOptions.Builder()
6
.build();
7
CallInvite.accept(context, acceptOptions, listener);
  • Introduced call holding via Call.hold(boolean) feature
  • Migrated Voice.setRegion(String) to ConnectOptions.Builder.region(String) and AcceptOptions.Builder.region(String)
  • Migrated Voice.getRegion() to ConnectOptions.getRegion() and AcceptOptions.getRegion()
  • CLIENT-5075 The SDK cannot be added alongside the Programmable Video SDK.
  • CLIENT-5062 Calls made to a client or PSTN number that have a long duration before answering may not get connected.
  • CLIENT-4943 Restrictive networks may fail unless ICE servers are provided via ConnectOptions.Builder.iceOptions(...) or AcceptOptions.Builder.iceOptions(...). ICE servers can be obtained from Twilio Network Traversal Service.
  • CLIENT-4805 The SDK size is significantly larger than 2.x. A reduced size will be introduced during the beta period.
  • CLIENT-4998 Network handoff, and subsequent connection renegotiation is not supported.
  • CLIENT-2985 IPv6 is not supported.
  • CLIENT-4698 Params that are passed to your TwiML Application while making calls are not URL encoded
  • CLIENT-4547 Insights is not published
  • CLIENT-4672, CLIENT-4673 Error codes 20157 and 20151 report different message and explanation text than Voice 2.0 SDKs
  • CLIENT-4537 PCMU is the only supported codec. We plan on adding support for Opus moving forward. #117(link takes you to an external page)
  • CLIENT-5242 Occasional native crash in AsyncTask of registration/unregistration and event publishing. The crash has only been observed on API 18 devices and results from a thread safety bug in Android(link takes you to an external page). Similar crashes have been reported in the popular networking library OkHttp #1520(link takes you to an external page) #1338(link takes you to an external page). If this bug is impacting your applications, please open an issue on our quickstart(link takes you to an external page) and we will investigate potential fixes.
ABIApp Size Increase
universal20.7MB
armeabi-v7a4.5MB
arm64-v8a5.4MB
x865.8MB
x86_645.5MB

2.X

For older changelog entries including 2.x, click Changelog

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