_libssh2.Error: Unable to close the channel.

[foxx]

Traceback (most recent call last):
  File "test.py", line 94, in <module>
    libssh2_upload()
  File "test.py", line 92, in libssh2_upload
    chan.close()
  File "/usr/local/lib/python2.6/dist-packages/pylibssh2-1.0.1-py2.6-linux-x86_64.egg/libssh2/channel.py", line 53, in close
    return self._channel.close()
_libssh2.Error: Unable to close the channel.

Code being used;

def libssh2_upload():
    import libssh2
    import tempfile
    import os
    import socket

    host = "xxx"
    user = "xxx"
    file_to_send = "/tmp/lol"

    fd, fpath = tempfile.mkstemp()
    fh = os.fdopen(fd, 'w')
    fh.write(key)
    fh.close()

    fd2, fpath2 = tempfile.mkstemp()
    fh2 = os.fdopen(fd2, 'w')
    fh2.write(pubkey)
    fh2.close()

    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.connect((host, 22))
    sock.setblocking(1)

    session = libssh2.Session()
    session.set_banner()
    session.startup(sock)
    session.userauth_publickey_fromfile(user, fpath2, fpath, "")

    fsize = os.path.getsize(file_to_send)
    chan = session.scp_send(file_to_send, 0700, fsize)

    sf = open(file_to_send, 'rb')
    while True:
        c = sf.read(512)
        if not c:
            break
        chan.write(c)
    chan.close()

libssh2_upload()

Also, the file is corrupt on the other side (md5 mismatch) and the size is very different.

Any ideas?

Thanks

[foxx]

If I use the following;

    for x in range(1,21000):
        chan.write(str(x)+"\r\n")

I then end up with;

> tail /tmp/lol -n 5
20308
20309
20310
20311

So it seems to be dropping the last chunks of data.. if I increase 21000 to 22000, it will still continue to increase but will drop out at 21311 instead.

If I change this to 5, nothing appears in the file at all;

    for x in range(1,5):
        chan.write(str(x)+"\r\n")

 > ls -lah /tmp/lol
-rwx------ 1 pippaprod pippaprod 0 May 31 15:15 /tmp/lol

[foxx]

Also;

libssh2 is: 1.2.6-1
Python 2.6.6

Hopefully this can be fixed!

Thanks

[Jhoanor]

I have nearly the same issue on OpenBSD with python 2.7 and libssh2-1.4.3
Though my 238Mb testfile is send and received correctly.
I also get an error code:
_libssh2.Error: Unable to close the channel (error -34).

I used pylibssh2-1.0.3
But, if I install the old version pylibssh2-1.0.0, I do not get an error. That version works fine!!
(1.0.1 gives an error, 1.0.2 I didn't try)

After some searching it turns out there is an error in channel.c line 46:
it should be:
if (rc && rc != LIBSSH2_ERROR_EAGAIN)
That does work. Otherwise, after a succesfull close, it wil try to close again.