Re: [PATCH] remote-bzr: reuse bzrlib transports when possible

> On 2013-09-07 19:58, Richard Hansen wrote:
>> Pass a list of open bzrlib.transport.Transport objects to each bzrlib
>> function that might create a transport.  This enables bzrlib to reuse
>> existing transports when possible, avoiding multiple concurrent
>> connections to the same remote server.
>>
>> If the remote server is accessed via ssh, this fixes a couple of
>> problems:
>>   * If the user does not have keys loaded into an ssh agent, the user
>>     may be prompted for a password multiple times.
>>   * If the user is using OpenSSH and the ControlMaster setting is set
>>     to auto, git-remote-bzr might hang.  This is because bzrlib closes
>>     the multiple ssh sessions in an undefined order and might try to
>>     close the master ssh session before the other sessions.  The
>>     master ssh process will not exit until the other sessions have
>>     exited, causing a deadlock.  (The ssh sessions are closed in an
>>     undefined order because bzrlib relies on the Python garbage
>>     collector to trigger ssh session termination.)
>
> I forgot to mention:  I didn't add a Signed-off-by line because there is
> no mention of a copyright license at the top of git-remote-bzr.