Ticket #86 (closed defect)
libssh2_poll returns 0 sometimes when using select
|Reported by:||vtcool||Owned by:||bagder|
I have encountered an issue where if polling a exec channel for a command like "netstat -a" with libssh2_poll that in some command execution runs, the libssh2_poll will always return 0 and will never change on subsequent polls of the same function on Windows 2003 server.
I have structured my reads to do something like the following:
1) Execute command
2) Read channel first
3) Check if libssh2_poll for availability of data on the channel. If the rc is 0, loop until we get something greater than 0.
4) Continue to read from step 1.
However, in the particular cases where the code execution doesn't successfully return, I get a rc > 0 until a 0 is hit and then it remains 0. I have narrowed it down to the socket select() function on Windows 2003, but am unable to understand why there would be no data available when there is really data available. To me it would seem select() is behaving incorrectly.