blocking forever in libssh2_channel_read about libssh2 HOT 8 CLOSED

Have you enabled trace for everything (i.e. libssh2_trace(session, ~0)) ?

Is the program busy (100% CPU usage) or waiting for I/O?

Could you try to running the program under the debugger and trying to find where and how it is hanging?

from libssh2.

trace for everything is enabled, I posted the trace after authentication. it blocks inside a read socket syscall, and never returns. the loop in channel read is missing a check to see if it read enough:

from libssh2.

a workaround is to put the socket in non-blocking mode.

from libssh2.

the loop in channel read is missing a check to see if it read enough

That is made on purpose in order to improve performance.

Could you include a backtrace at the point where the program is blocked in the read syscall?

from libssh2.

BTW, the socket is already set into non-blocking in libssh2_session_handshake. Setting it also from the outside shouldn't make any difference. Maybe the problem is there.

from libssh2.

Has this issue been addressed/fixed? I am also facing the same problem. For my application, I cannot set the socket to non-blocking mode. It has to be in blocking mode.

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I was able to resolve the problem by using the function "libssh2_session_set_timeout" which is to be used for blocking mode.

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This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

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