[Bug 391874] Re: “dynamic” application-level port forwarding non-functional

[Māris Fogels]

I encountered a very similar problem running a development version of
Oneiric, openssh-client 1:5.8p1-7ubuntu1.

Michael, try using 'curl -I --socks5 127.0.0.1:1080 http://thesite'.  I
find that curl connects perfectly through the SOCKS SSH tunnel and that
Firefox 7.0.1+build1+nobinonly-0ubuntu1 fails with almost exactly the
log messages you pasted.

Here is a successful connection I recorded using 'curl -I
https://thewebhost --socks5 localhost:12345' and 'ssh -vvv -ND 12345
thesshhost':

debug1: Connection to port 12345 forwarding to socks port 0 requested.
debug2: fd 7 setting TCP_NODELAY
debug2: fd 7 setting O_NONBLOCK
debug3: fd 7 is O_NONBLOCK
debug1: channel 2: new [dynamic-tcpip]
debug2: channel 2: pre_dynamic: have 0
debug2: channel 2: pre_dynamic: have 4
debug2: channel 2: decode socks5
debug2: channel 2: socks5 auth done
debug2: channel 2: pre_dynamic: need more
debug2: channel 2: pre_dynamic: have 0
debug2: channel 2: pre_dynamic: have 10
debug2: channel 2: decode socks5
debug2: channel 2: socks5 post auth
debug2: channel 2: dynamic request: socks5 host 91.189.89.100 port 443 command 1
debug2: channel 2: open confirm rwindow 2097152 rmax 32768
debug2: channel 2: read<=0 rfd 7 len 0
debug2: channel 2: read failed
debug2: channel 2: close_read
debug2: channel 2: input open -> drain
debug2: channel 2: ibuf empty
debug2: channel 2: send eof
debug2: channel 2: input drain -> closed
debug2: channel 2: rcvd eof
debug2: channel 2: output open -> drain
debug2: channel 2: obuf empty
debug2: channel 2: close_write
debug2: channel 2: chan_shutdown_write: shutdown() failed for fd 7: Transport endpoint is not connected
debug2: channel 2: output drain -> closed
debug2: channel 2: send close
debug3: channel 2: will not send data after close
debug2: channel 2: rcvd close
debug3: channel 2: will not send data after close
debug2: channel 2: is dead
debug2: channel 2: garbage collecting
debug1: channel 2: free: direct-tcpip: listening port 12345 for 91.189.89.100 port 443, connect from 127.0.0.1 port 60535, nchannels 3
debug3: channel 2: status: The following connections are open:
  #2 direct-tcpip: listening port 12345 for 91.189.89.100 port 443, connect from 127.0.0.1 port 60535 (t4 r0 i3/0 o3/0 fd 7/7 cc -1)

Here is a failed connection, same https:// address, same ssh tunnel,
using Firefox 7.0.1.  Firefox is configured with all traffic proxied to
127.0.0.1 port 12345:

debug1: Connection to port 12345 forwarding to socks port 0 requested.
debug2: fd 7 setting TCP_NODELAY
debug2: fd 7 setting O_NONBLOCK
debug3: fd 7 is O_NONBLOCK
debug1: channel 2: new [dynamic-tcpip]
debug2: channel 2: pre_dynamic: have 0
debug2: channel 2: pre_dynamic: have 424
debug2: channel 2: zombie
debug2: channel 2: garbage collecting
debug1: channel 2: free: dynamic-tcpip, nchannels 3
debug3: channel 2: status: The following connections are open:

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https://bugs.launchpad.net/bugs/391874

Title:
  “dynamic” application-level port forwarding non-functional

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