The branch, release/0.4.0.x has been updated via 98bc65e33b9f0a92d8be038482c919d7d87819d5 (commit) from 9687ed3c223ea8ce2f0f79229a2233adc927536c (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- ----------------------------------------------------------------------- Summary of changes: x2go/backends/proxy/base.py | 18 ++++++++++++------ x2go/forward.py | 37 +++++++++++++++++++++++++++---------- 2 files changed, 39 insertions(+), 16 deletions(-) The diff of changes is: diff --git a/x2go/backends/proxy/base.py b/x2go/backends/proxy/base.py index d193e60..d11b68c 100644 --- a/x2go/backends/proxy/base.py +++ b/x2go/backends/proxy/base.py @@ -36,6 +36,7 @@ import cStringIO # Python X2go modules import x2go.forward as forward import x2go.log as log +import x2go.x2go_exceptions as x2go_exceptions from x2go.defaults import X2GOCLIENT_OS as _X2GOCLIENT_OS if _X2GOCLIENT_OS in ("Windows"): @@ -158,15 +159,20 @@ class X2goProxyBASE(threading.Thread): pass local_graphics_port = self.session_info.graphics_port - while self.fw_tunnel is None: - self.fw_tunnel = forward.start_forward_tunnel(local_port=local_graphics_port, remote_port=self.session_info.graphics_port, ssh_transport=self.ssh_transport, logger=self.logger, ) + count = 0 + # we will try to bind to 50 different local ports, if that fails, we are lost... + while self.fw_tunnel is None and count < 50: + self.fw_tunnel = forward.start_forward_tunnel(local_port=local_graphics_port + count, remote_port=self.session_info.graphics_port, ssh_transport=self.ssh_transport, logger=self.logger, ) if self.fw_tunnel is None: - self.logger('socket [localhost]:%s is in use, trying local TCP/IP socket port: [localhost]:%s' % (local_graphics_port, local_graphics_port+1), loglevel=log.loglevel_INFO) - local_graphics_port += 1 - time.sleep(.5) + self.logger('socket [localhost]:%s is in use, trying local TCP/IP socket port: [localhost]:%s' % (local_graphics_port + count, local_graphics_port + count +1), loglevel=log.loglevel_INFO) + count += 1 + time.sleep(.2) + + if count == 50: + raise x2go_exceptions.X2goFwTunnelException('local socket bind for forwarding tunnel failed, there are probably too many open connections') # update the proxy port in PROXY_ARGS - self._update_local_proxy_socket(local_graphics_port) + self._update_local_proxy_socket(local_graphics_port + count) cmd_line = self._generate_cmdline() # resume sessions needs a fraction of time for the forward_tunnel to be created... diff --git a/x2go/forward.py b/x2go/forward.py index df4a8a9..0fafa8d 100644 --- a/x2go/forward.py +++ b/x2go/forward.py @@ -73,8 +73,21 @@ class X2goFwServer(StreamServer): self.chain_port = remote_port self.ssh_transport = ssh_transport + self._get_channel() StreamServer.__init__(self, listener, self.x2go_forward_tunnel_handle) + def _get_channel(self): + + try: + self.chan = self.ssh_transport.open_channel('direct-tcpip', + (self.chain_host, self.chain_port), + self.ssh_transport.getpeername()) + except Exception, e: + self.logger('incoming request to %s:%d failed: %s' % (self.chain_host, + self.chain_port, + repr(e)), loglevel=log.loglevel_ERROR) + raise x2go_exceptions.X2goFwTunnelException('forwarding tunnel setup failed') + def x2go_forward_tunnel_handle(self, fw_socket, address): """\ Handle for SSH/Paramiko forwarding tunnel. @@ -85,15 +98,14 @@ class X2goFwServer(StreamServer): @type address: C{tuple} """ + + if self.chan is None: + + self._get_channel() + try: - self.chan = self.ssh_transport.open_channel('direct-tcpip', - (self.chain_host, self.chain_port), - fw_socket.getpeername()) chan_peername = self.chan.getpeername() except Exception, e: - self.logger('incoming request to %s:%d failed: %s' % (self.chain_host, - self.chain_port, - repr(e)), loglevel=log.loglevel_ERROR) raise x2go_exceptions.X2goFwTunnelException('forwarding tunnel setup failed') if self.chan is None: @@ -155,13 +167,18 @@ def start_forward_tunnel(local_host='localhost', local_port=22022, @rtype: C{instance} """ - fw_server = X2goFwServer((local_host, local_port), remote_host, remote_port, ssh_transport, logger=logger) try: - fw_server.start() - return fw_server - except socket.error: + fw_server = X2goFwServer((local_host, local_port), remote_host, remote_port, ssh_transport, logger=logger) + try: + fw_server.start() + return fw_server + except socket.error: + pass + except x2go_exceptions.X2goFwTunnelException: pass + return None + def stop_forward_tunnel(fw_server): """\ hooks/post-receive -- python-x2go.git (Python X2Go Client API) This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "python-x2go.git" (Python X2Go Client API).