Keep the unidentified socket alive while a JSON-RPC connection is open (including stdio mode) and while a D-Bus object is exported, instead of for the lifetime of the receive loop. The receive loop does not use the unauthenticated socket, so keeping it alive there was semantically wrong.
This also covers --receive-mode=manual, where no receive loop runs butclients still send messages.
* Add voice call API types, protobuf definitions, and build dependencies
Define call method interfaces in Manager, create API records (CallInfo,
CallOffer, TurnServer), and hand-coded protobuf parsers for RingRTC
signaling messages (ConnectionParametersV4, RtpDataMessage).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Implement call signaling state machine and message routing
Add CallSignalingHelper for x25519 key generation and HKDF-based SRTP
key derivation. Add CallManager for tracking active calls, spawning
call tunnel subprocesses, and handling call lifecycle (offer, answer,
ICE candidates, hangup, busy). Wire call message routing in
IncomingMessageHandler and implement Manager call methods in ManagerImpl.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Add call state notification mechanism for JSON-RPC clients
Implement CallEventListener callback pattern that fires on every call
state transition (RINGING_INCOMING, RINGING_OUTGOING, CONNECTING,
CONNECTED, ENDED). The JSON-RPC layer auto-subscribes and pushes
callEvent notifications alongside receive notifications.
Changes:
- Manager.java: Add CallEventListener interface and methods
- ManagerImpl.java: Implement add/removeCallEventListener with cleanup
- DbusManagerImpl.java: Add stub implementation (not supported over DBus)
- JsonCallEvent.java: JSON notification record for call events
- SignalJsonRpcDispatcherHandler.java: Auto-subscribe call event listeners
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
* Add JSON-RPC commands for voice call control
Add startCall, acceptCall, hangupCall, rejectCall, and listCalls
commands for the JSON-RPC daemon interface. Register commands and
update GraalVM metadata for native image support.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Add call tunnel documentation
Add documentation about the architecture, protocol, and implementation of
signal-call-tunnel, the secure tunnel subprocess for voice calling.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Remove unused integration test tag from lib/build.gradle.kts
The excludeTags("integration") block was added but no tests use the
@Tag("integration") annotation. Revert to upstream's simple
useJUnitPlatform() call.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Derive install dir from jar location instead of nonexistent property
The signal.cli.install.dir system property was never set by the Gradle
start script or anywhere else. Replace it with code source detection:
resolve the jar's parent directory to find the install root, then look
for bin/signal-call-tunnel relative to that.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Remove explicit success responses from hangup and reject commands
Successful commands with no additional information should not return
a response, matching the pattern used by other signal-cli commands
like SendSyncRequestCommand and UpdateConfigurationCommand.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Use instanceof pattern matching for call ID extraction
Replace explicit null check and Number cast with instanceof pattern
matching in AcceptCallCommand, HangupCallCommand, and
RejectCallCommand.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Guard handleIncoming* methods against missing call event listeners
Skip processing incoming call offers when no call event listeners are
registered, since there is nobody to notify about the call. For hangup
and busy, also guard when there are no listeners AND no active call
(the tunnel may still need cleanup if already spawned).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Use Jackson JSON serialization in CallManager
Replace all manual JSON string concatenation with Jackson ObjectNode
construction and ObjectMapper serialization. Use BigInteger for call
IDs to properly represent unsigned 64-bit values in JSON.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Add subscribeCallEvents command for opt-in call event notifications
Call events are no longer subscribed by default. JSON-RPC clients must
explicitly call subscribeCallEvents to receive callEvent notifications
and enable incoming call handling. This avoids sending unwanted call
events to clients that don't use voice calling.
Also adds unsubscribeCallEvents for cleanup, idempotent subscription
guard, and updates CALL_TUNNEL.md to document the subscription step.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Replace Unix socket with stdin/stdout for tunnel communication
Use the tunnel subprocess' stdin for sending control messages and
stdout for receiving control events, instead of a separate Unix
domain socket. This eliminates:
- Temporary directory creation (/tmp/sc-<random>/)
- Socket path and auth token in config JSON
- Connection retry loop (50x at 200ms)
- Auth message handshake
- Socket cleanup on call end
The tunnel's stderr is captured separately for logging. Config JSON
is written as the first line on stdin, followed by control messages.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
