Re: [Quickfix-developers] QF hanging in resend scenario

[Oren M. <or...@qu...>]

Are you using the SocketInitiator or ThreadedSocketInitiator?

--oren

adrien1977 (sent by Nabble.com) wrote:

> Hi
>
> We are implementing a component that uses quickfix to connect to 
> another quickfix server.
>
> We have noticed a weird scenario that causes our adapter and the 
> server to hang (may because entering a deadlock)
>
>  
>
> We Connect for the first time to the server and send 2000 messages and 
> get the responses.
>
> We disconnect and reset the sequence on the server to 1 but keep our 
> sequence the same.
>
> We reconnect and obviously we received a resend request from  the server.
>
> We start blasting the 2000 messages and the server processes them and 
> start sending the messages back to us.
>
> However we do not receive these messages (or may be they are queued in 
> QF) because they do not show in the log (but they are in the network. 
> We could see them using a sniffer)
>
>  
>
> While still sending the messages, our adapter stop sending more, and 
> this is because the TCP window on the receiving side is full.
>
> However the server is still sending messages that we do not receive.
>
>  
>
> After a while our adapter start sending back message, then stops 
> starts again and finally stops and nothing else happens.
>
>  
>
> I would like to know if it is normal.
>
>  
>
> We are thinking that the thread that received the resend request is 
> the same thread that processes the resend of messages.
>
> Since the receiving thread is busy sending the messages if cannot 
> receive any this causing a queue in our side.
>
>  
>
> Is it normal that the receiving thread is blocked when processing a 
> resend? Should not it allowed more messages to come??
>
>  
>
> We are using the C++ version with Java wrapper.
>
>  
>
> thanks
>
>  
>
>  
>
> adrien
>
>  
>
> View this message in context: QF hanging in resend scenario 
> <http://www.nabble.com/QF-hanging-in-resend-scenario-t852464.html#a2209923>
> Sent from the QuickFIX - Dev 
> <http://www.nabble.com/QuickFIX---Dev-f1041.html> forum at Nabble.com.