I don't think your message made it through to the list - just me. Probably best not to submit through GMane. Here it is:
On 23 February 2012 19:52, Salvador Fandiño <sfand...@yahoo.com> wrote: > > > On 02/23/2012 07:50 PM, Alexander Lamaison wrote: >> >> On 22 February 2012 22:55, Salvador >> Fandiño<sfandino-/e1597as9lqavxtiumw...@public.gmane.org> wrote: >> >> >>> I have been testing my module with libssh2 1.4.0 and found that put >>> transfers always stall after reading around 262130 +-10 from the channel >>> (note that my module does not use the SFTP functionality from libssh2, it >>> just connects to the remote server, creates a new channel and then writes >>> and reads from it). >>> >>> After seeing this thread I got the source from git, hoping that my >>> problem >>> would have being also solved, but is hasn't. >> >> ... >>> >>> I think it would be a good idea to test the patch with bigger transfers >>> before making a new release. >> >> >> You say you don't use libssh2's SFTP implementation so the changes >> introduced by the patch don't apply to your problem. They only change >> sftp.c. > > > yes, I know, I was hoping that the libssh2 sftp code were using the same > calls for accessing the channel data as Net::SSH2, but after inspecting > libssh2 code I can see that it is actually using a lower level API. > > Net::SSH2 uses libssh2_channel_read_ex and, this may ring a bell, the > transfer stalls after exactly 256 * 1024 bytes have been read from the > channel. This happens to be the default channel windows size. Just a thought; I've no idea if it's related. > What follows is the combined debug log from Net::SFTP and Net::SSH2, I guess > it is easy understandable. Lines beginning by // are my comments: > > ... > # reading at 0/4 > Net::SSH2::Channel::read(size = 4, ext = 0) > - read 4 bytes > - read 4 total > # 4 bytes read from SSH channel, total 262108 > # reading at 4/4 > # reading at 4/28 > Net::SSH2::Channel::read(size = 24, ext = 0) > - read 24 bytes > - read 24 total > # 24 bytes read from SSH channel, total 262132 > # reading at 28/28 > # 4125 bytes written to SSH channel, total 38558276 > # reading at 0/4 > Net::SSH2::Channel::read(size = 4, ext = 0) > - read 4 bytes > - read 4 total > # 4 bytes read from SSH channel, total 262136 > # reading at 4/4 > # reading at 4/28 > > // At this point, 262136 bytes have been read from the channel > // Net::SFTP::Foreign tries to read the remaining 24 bytes of the > // SSH2_FXP_STATUS response (the packet length, 4bytes, have > // already been read) > > Net::SSH2::Channel::read(size = 24, ext = 0) > > // Net::SSH2 calls libssh2_channel_read_ex(channel, XLATEXT, b, 24) > > - read 8 bytes > > // it reads 8 bytes and returns, at this point, 256*1024 bytes > // have been read from the channel. > // Net::SSH2 calls libssh2_channel_read_ex(channel, XLATEXT, b, 16) > // and it never returns, the debugger reveals the process is > // inside "poll". _______________________________________________ libssh2-devel http://cool.haxx.se/cgi-bin/mailman/listinfo/libssh2-devel
