From: Christian Kerth <christian.kerth@...>
Date: 2008-07-17T23:10:01+09:00
Subject: Re: "Address already in use" Error with net/http

> req = Net::HTTP::Get.new(url.path)
> conn = Net::HTTP.new(url.host, url.port)
> 
> res = conn.start {
>     |http|
>     http.request(req)
> }
> 
> While the threads are running i sometimes get the Error WSAEADDRINUSE
> 10048 "Address already in use" (i have a German version of Windows XP
> SP2. There the exact message is: Normalerweise darf jede Socketadresse
> (Protokoll, Netzwerkadresse oder Anschluss) nur jeweils einmal verwendet
> werden. - connect(2))

if i perform the request like this the error is not thrown:

res = conn.request(req, @data)

I investigated i bit further into ruby's code and found out that if you 
don't call start and provide a closure, Net:HTTP.request implicitly 
calls start with a closure. But it modifies the req['connection'] 
parameter before. It sheems like this prevents the error?

def request(req, body = nil, &block)  # :yield: +response+
      unless started?
        start {
          req['connection'] ||= 'close'
          return request(req, body, &block)
        }
      end
.
.
.



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