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Subject: Re: Error Receiving a File SCP

Re: Error Receiving a File SCP

From: Barry Fawthrop <barryf_at_ttienterprises.org>
Date: Sun, 27 May 2012 12:23:51 -0400

Any light on what will cause recv to hang up ?

Also interested to know what triggers the Failure Event -37
and causes it to loop back ? I need to try to create this loop around

Thanks in advance

On May 23, 2012, at 8:09 AM, Barry Fawthrop wrote:

> I am able to connect But Unable to receive a File
> Using the same code as example/scp.c (tried even the scp_nonblock.c)
>
> Trace taken from the working example/scp.c
>
> Read B lines come from my trace additions to transport.c _libssh2_transport_read Function
>
> Read B 2 just before if (session->state & LIBSSH2_STATE_NEWKEYS) {
> Read B 3 just after remainbuf = p->writeidx - p->readied; prints writeidx and readidx values
> Read B 3 just before if (remainbuf < blocksize) { prints remainbuf and blocksize values
> Read B 3 A inside if (remainbuf < blocksize) { prints remainbuf value
> Read B 3 B just before nread = LIBSSH2_RECV(session, &p->buf[remainbuf], PACKETBUFSIZE - remainbuf, ...
> Read B 3 C right after the nread = LIBSSH2_RECV(session,
>
> ===== . ==== sections appear during scp.c execution which works
> but NOT during my execution
>
> Code STOPS in the LIBSSH2_RECV function
>
> Any Help Please ! !
>
> Thanks in advance
>
> :: [libssh2] 0.919596 Transport: Packet type 91 received, length=17
> :: [libssh2] 0.919603 Transport: Looking for packet of type: 91
> :: [libssh2] 0.919608 Conn: Connection Established - ID: 0/0 win: 0/262144 pack: 140381006102528/4295000064
> :: [libssh2] 0.919622 Conn: starting request(exec) on channel 0/0, message=scp -pf 'code.xml'
> :: [libssh2] 0.919658 Socket: Sent 84/84 bytes at 0x7fadb9005658
> :: [libssh2] 0.919711 Transport: Looking for packet of type: 99
> :: [libssh2] 0.919719 Transport: Looking for packet of type: 100
> Read B
> Read B 1
> Read B 2
> Read B 3 52 52
> Read B 3 (0) (16)
> Read B 3 A (0)
> Read B 3 B
>
> ====================================================================
> THIS INDENTED BLOCK DOES NOT APPEAR DURING MY CODE EXECUTION
> Read B 3 C (-35)
> :: [libssh2] 0.919747 Failure Event: -37 - Would block requesting SCP startup
> :: [libssh2] 0.925962 Transport: Looking for packet of type: 99
> :: [libssh2] 0.925990 Transport: Looking for packet of type: 100
> Read B
> Read B 1
> Read B 2
> Read B 3 0 0
> Read B 3 (0) (16)
> Read B 3 A (0)
> Read B 3 B
> ====================================================================
>
> Read B 3 C (88)
> :: [libssh2] 0.926056 Socket: Recved 88/16384 bytes to 0x7fadb9001618+0
> Read B 4 (88)
> Read B 5 (36) (72)
> Read B 6
> Read B 6 A
> Read B 6 B
> Read B 7 (16)
> Read B 8 (20)
> Read B 9 (0) (47) (47)
> :: [libssh2] 0.926135 Transport: Packet type 93 received, length=9
> :: [libssh2] 0.926148 Conn: Window adjust for channel 0/0, adding 2097152 bytes, new window_size=2097152
> Read B
> Read B 1
> Read B 2
> Read B 3 88 52
> Read B 3 (36) (16)
> Read B 4 (36)
> Read B 5 (20) (20)
> Read B 6
> Read B 6 A
> Read B 6 B
> Read B 7 (0)
> Read B 8 (20)
> Read B 9 (0) (31) (31)
> :: [libssh2] 0.926243 Transport: Packet type 99 received, length=5
> :: [libssh2] 0.926256 Transport: Looking for packet of type: 99
> :: [libssh2] 0.926267 SCP: Sending initial wakeup
> write 1
> :: [libssh2] 0.926298 Conn: Writing 1 bytes on channel 0/0, stream #0
> write 2
> write 3
> write 4 Read B
> Read B 1
> Read B 2
> Read B 3 88 88
> Read B 3 (0) (16)
>
>
>
> ====================================================================
> THIS INDENTED BLOCK DOES NOT APPEAR DURING MY CODE EXECUTION
> Read B 3 A (0)
> Read B 3 B
> Read B 3 C (-35)
> :: [libssh2] 0.926377 Conn: Sending 1 bytes on channel 0/0, stream_id=0
> :: [libssh2] 0.926444 Socket: Sent 52/52 bytes at 0x7fadb9005658
> :: [libssh2] 0.926460 Conn: channel_read() wants 1 bytes from channel 0/0 stream #0
> Read B
> Read B 1
> Read B 2
> Read B 3 0 0
> Read B 3 (0) (16)
> Read B 3 A (0)
> Read B 3 B
> Read B 3 C (-35)
> :: [libssh2] 0.926519 Failure Event: -37 - would block
> :: [libssh2] 0.926528 Failure Event: -37 - Would block waiting for SCP response
> :: [libssh2] 0.927204 Conn: channel_read() wants 1 bytes from channel 0/0 stream #0
> Read B
> Read B 1
> Read B 2
> Read B 3 0 0
> Read B 3 (0) (16)
> Read B 3 A (0)
> Read B 3 B
> Read B 3 C (452)
> :: [libssh2] 0.927288 Socket: Recved 452/16384 bytes to 0x7fadb9001618+0
> ====================================================================
>
> Read B 4 (452)
> Read B 5 (436) (436)
> Read B 6
> Read B 6 A
> Read B 6 B
> Read B 7 (416)
> Read B 8 (20)
> Read B 9 (0) (447) (447)
> :: [libssh2] 0.927389 Transport: Packet type 95 received, length=415
> PACKET Extended Data
> PACKET Data Channel
> :: [libssh2] 0.927410 Conn: 402 bytes packet_add() for 0/0/1
> Read B
> Read B 1
> Read B 2
> Read B 3 452 452
> Read B 3 (0) (16)
> Read B 3 A (0)
> Read B 3 B
>
> <===== STOPS Here Just waits Thus is Hung Up in the LIBSSH2_RECV function ?
>
> Read B 3 C (-35)
> :: [libssh2] 0.927694 Failure Event: -37 - would block
> :: [libssh2] 0.927705 Failure Event: -37 - Would block waiting for SCP response
> :: [libssh2] 0.931757 Conn: channel_read() wants 1 bytes from channel 0/0 stream #0
> Read B
> Read B 1
> Read B 2
> Read B 3 0 0
> Read B 3 (0) (16)
> Read B 3 A (0)
> Read B 3 B
> Read B 3 C (68)
> :: [libssh2] 0.931842 Socket: Recved 68/16384 bytes to 0x7fadb9001618+0
> Read B 4 (68)
>
> .
>
>
>
> Thanks in advance
> _______________________________________________
> libssh2-devel http://cool.haxx.se/cgi-bin/mailman/listinfo/libssh2-devel

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Received on 2012-05-27

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