search for: ssh_msg_channel_close

...esult sshd on the server machine sends an SSH_MSG_CHANNEL_EOF to the peer. The two sides then wait. app2 does not know that its peer is gone, since its session with the ssh client is still active. ssh client, on the client machine does not terminate the session, because it hasn't received the SSH_MSG_CHANNEL_CLOSE message. I am not sure what sshd on the server machine is waiting for. Probably waiting for the ssh client to consume all of the backlog. Finally, my question: Is there a way to force sshd (on the server machine) to send SSH_MSG_CHANNEL_CLOSE and terminate the session immediately? ***...

...ll the files that have to be transferred are transferred all right, with no data missing in the transferred files. More to the point: The traces show that the server started the closing phase by sending an exit-status SSH_MSG_CHANNEL_REQUEST message followed by an SSH_MSG_CHANNEL_EOF message and an SSH_MSG_CHANNEL_CLOSE message, to which the OpenSSH client at L replies with an SSH_MSG_CHANNEL_CLOSE message of its own: The session is closed correctly, as far as the server in S is concerned. Second, if I modify ssh.c in the OpenSSH code so that before exiting main() the program sleeps for one second, the "lost...

...ived, => SSH_MSG_CHANNEL_OPEN_CONFIRMATION packet type 93 received, => SSH_MSG_CHANNEL_WINDOW_ADJUST packet type 99 received, => SSH_MSG_CHANNEL_SUCCESS packet type 98 received, => SSH_MSG_CHANNEL_REQUEST packet type 96 received, => SSH_MSG_CHANNEL_EOF packet type 97 received, => SSH_MSG_CHANNEL_CLOSE ==> why ? and in the log sshd, I've some strange line : Jul 7 11:52:16 TOTO sshd[19553]: debug1: session_exit_message: release channel 0 Jul 7 11:52:16 TOTO sshd[19553]: debug2: channel 0: write failed On Tue, Jul 7, 2020 at 1:57 PM Brian Candler <b.candler at pobox.com> wrote:...

...f (strcmp(ctype, "auth-agent at openssh.com") == 0) { +#ifdef WITH_AGENTFWD c = client_request_agent(ctype, rchan); +#endif } /* XXX duplicate : */ if (c != NULL) { @@ -1256,20 +1268,28 @@ client_init_dispatch_13(void) { dispatch_init(NULL); +#ifdef WITH_PROTO13 dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_close); dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, &channel_input_close_confirmation); +#endif dispatch_set(SSH_MSG_CHANNEL_DATA, &channel_input_data); dispatch_set(SSH_MSG_CHANNEL_OPEN_CONFIRMATION, &channel_input_open_confirmation); dispatch_set(SSH_M...

Dear all, For my thesis, I've been working on automatic inference of state machines for SSH servers. I ran into a couple of particularities regarding OpenSSH's inferred state machine, and was hoping some of you might be interested. Maybe you can even shed some light on it. Setup: I'm using LearnLib's (Java) version of the L* learning algorithm [1] to come up with sequences of

I'm trying to send data to a server with openssh 7.9p1, but it's hanging somewhere. the client stop at the line : Jul 7 11:52:16 TOTO sshd[19553]: debug3: channel 0: will not send data after close and after 5 minutes the client closes the connection, why ? This is the trace of the server openssh : ( DEBUG3 level) Jul 7 11:52:15 TOTO sshd[31175]: debug3: fd 6 is not O_NONBLOCK Jul