[Haskell-cafe] http: Network.Browser leaks TCP connections

Daniel McAllansmith dm.maillists at gmail.com
Thu Apr 10 23:18:51 EDT 2008

I've looked into this further and I believe the leaked connections are due to 
Network.Browser, this is a separate issue from that identified by Paul Brown.

The BrowserState in Network.Browser has a connection pool of up to five 
connections.  When a sixth is opened the oldest connection is closed.  This 
looks to be the only time that a connection is closed.
BrowserState's internals are not exported so there is no way for a user to 
close them.

The net effect for HXT is that every time readDocument is called, using native 
http, a single TCP connection is leaked.

I've attached a patch against the darcs version of http that cures my test 
programs leak.

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