HKUDS/nanobot · error · ConnectionError

Signal SSE stream ended unexpectedly

Error message

Signal SSE stream ended unexpectedly

What it means

Error "Signal SSE stream ended unexpectedly" thrown in HKUDS/nanobot.

Source

Thrown at nanobot/channels/signal/runtime.py:508

                    else:
                        raise ConnectionRefusedError(
                            f"signal-cli daemon check returned status {response.status_code}"
                        )
                except Exception as e:
                    raise ConnectionRefusedError(f"signal-cli daemon not responding: {e}")

                # Reset reconnect delay after successful connection check.
                reconnect_delay_s = 1.0

                # Ensure account-level typing indicators are enabled.
                await self._ensure_typing_indicators_enabled()

                # Start SSE receiver and supervise it. If it exits while we're still
                # running, treat it as a disconnect and reconnect.
                self._sse_task = asyncio.create_task(self._sse_receive_loop())
                await self._sse_task
                if self._running:
                    raise ConnectionError("Signal SSE stream ended unexpectedly")

            except asyncio.CancelledError:
                break
            except ConnectionRefusedError as e:
                self.logger.error(
                    "{}. Make sure signal-cli daemon is running: "
                    "signal-cli -a {} daemon --http {}:{}",
                    e,
                    self.config.phone_number,
                    self.config.daemon_host,
                    self.config.daemon_port,
                )
            except Exception as e:
                self.logger.error("Signal channel error: {}", e)
            finally:
                if self._sse_task:
                    if not self._sse_task.done():
                        self._sse_task.cancel()

View on GitHub (pinned to 42f37dc4c0)

When it happens

Trigger: Thrown at nanobot/channels/signal/runtime.py:508 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of HKUDS/nanobot@42f37dc4c0 (2026-08-26). Data as JSON: /api/errors/2a0a72b2a5bada7c. Report an issue: GitHub.