Request stream management for the session by default. The rate of requests
and acks is controlled by the -I option. With stream management, the
client can check when all stanzas have been flushed to the server. For
example, the following works:
cat /path/textfile | xmppipe -o transfer -r sender
# on another system
xmppipe -o transfer -r receiver > tmpfile
The behaviour is to always attempt enabling stream management. The XEP
is ambiguous about the response to an enable when stream management is
not offered. Presumably the server will respond with "failure".
So the code should probably have 2 checks:
* if stream management is offered as a feature, send an enable
* if the server responds with "enabled", handle requests
Set a limit on the number of pings without a reply and exit if the limit
is reached. Useful for detecing broken network connections due to
network changes.
The default configuration will take about 4 minutes to detect failure
(1 keepalive every 60 seconds, tolerate 3 failures).
No point shutting down nicely if the connection has failed: exit
immediately and print out an error.
The error is the same whether the connection has failed due to a DNS
lookup, TCP connection or authentication failure. Running in debug mode
can show the reason for failure. libstrophe has an enum indicating the
connection state; maybe this can be used for better error reporting.
Add a ID per message. Seems to fix the duplicate messages seen with MUCs
on the Conversations android client whenever the network is switched
(e.g., from wifi to cell).
Introduce a dependency on Linux's libuuid which introduces portability
issues. However, it should be simple to add support for the BSD UUID
interface.
libuuid was used because it is a fast and simple way of generating
a unique id. Realistically, the ID only needs to be unique within
the MUC and so could probably be replaced with an sprintf() combining
time of day, PID and a random number.
Force exiting on nick conflicts. xmppipe could generate a unique resource
(e.g., xmppipe-<pid>) but it prevents accidentally having two instances
running in a room.
