search for: mux_client_request_alive

...packet type 0x10000006 len 92 debug2: mux_master_process_open_fwd: channel 1: request remote forward /home/tbrown/.gnupg/S.gpg-agent:-2 -> /home/tbrown/.gnupg/S.gpg-agent.extra:-2 debug2: mux_master_process_open_fwd: found existing forwarding debug3: mux_client_request_session: entering debug3: mux_client_request_alive: entering debug3: mux_master_read_cb: channel 1 packet type 0x10000004 len 4 debug2: mux_master_process_alive_check: channel 1: alive check debug3: mux_client_request_alive: done pid = 806 debug3: mux_master_read_cb: channel 1 packet type 0x10000002 len 57 debug2: mux_master_process_new_session: ch...

...nish until I hit <ENTER>. Most of the times it terminates normally. This occurs approximately 1 out of 10 times. This affects the usage of multiplexed connections in scripts. Adding -vvv to the "slave" connection shows: debug3: mux_client_request_session: entering debug3: mux_client_request_alive: entering debug3: mux_client_request_alive: done pid = 5485 debug3: mux_client_request_session: session request sent debug1: mux_client_request_session: master session id: 3 <Have to hit ENTER here> debug3: mux_client_read_packet: read header failed: Broken pipe debug2...

...debug3: mux_master_read_cb: channel 1 packet type 0x00000001 len 4 debug2: process_mux_master_hello: channel 1 slave version 4 debug2: mux_client_hello_exchange: master version 4 debug3: mux_client_forwards: request forwardings: 0 local, 0 remote debug3: mux_client_request_session: entering debug3: mux_client_request_alive: entering debug3: mux_master_read_cb: channel 1 packet type 0x10000004 len 4 debug2: process_mux_alive_check: channel 1: alive check debug3: mux_client_request_alive: done pid = 1261 debug3: mux_client_request_session: session request sent debug3: mux_master_read_cb: channel 1 packet type 0x1000000...

...(buffer_len(&m) > 0) { + char *name = buffer_get_string(&m, NULL); + char *value = buffer_get_string(&m, NULL); + + debug2("Unrecognised master extension \"%s\"", name); + xfree(name); + xfree(value); } + buffer_free(&m); + return 0; +} + +static u_int +mux_client_request_alive(int fd) +{ + Buffer m; + char *e; + u_int pid, type; + + debug3("%s: entering", __func__); + + buffer_init(&m); + buffer_put_int(&m, MUX_C_ALIVE_CHECK); + + if (mux_client_write_packet(fd, &m) != 0) + fatal("%s: write packet: %s", __func__, strerror(errno)); + buf...