Windows mobile 6.5 .net CF HttpWebRequest to same URL from 2 different threads - errors?

I would guess that there is a third session somewhere. What you're seeing is most likely due to a little-known (until it bites you, like now) recommended connection-limitation in the HTTP-protocol. Section 8.1.4 of RFC2068 says A single-user client SHOULD maintain AT MOST 2 connections with any server or proxy I've experienced the same limitation myself, most recently on Windows Phone 7 The limit lies in the WebRequest and the solution is to increase the limit: set connection limit to 5 ServicePointManger.

DefaultConnectionLimit = 5 See e.g. This old blog entry from David Kline.

I would guess that there is a third session somewhere. What you're seeing is most likely due to a little-known (until it bites you, like now) recommended connection-limitation in the HTTP-protocol. Section 8.1.4 of RFC2068 says "A single-user client SHOULD maintain AT MOST 2 connections with any server or proxy".

I've experienced the same limitation myself, most recently on Windows Phone 7. The limit lies in the WebRequest and the solution is to increase the limit: // set connection limit to 5 ServicePointManger. DefaultConnectionLimit = 5; See e.g. This old blog entry from David Kline.

Thanks. It was the issue. Besides the fact I could of course increase the connection limit, I went the way I restructured my app and put the connection checking and web service connection stuff in one thread.

Thanks! – dominolog Feb 21 at 22:35.

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