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I am getting a strange web service error. I am hosting a WCF service that the client calling it, is consistently getting a 400 (Bad Request) back from IIS. I am unable to determine the cause of this, however I believe it may have something to do with the HTTP headers.

My question: does any software exists, that can capture the call prior to it reaching IIS, let me alter it slightly (change the headers) then replay?

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You could try Fiddler. – Dalton Conley Feb 14 at 21:37
+1 for Fiddler...don't have the energy (read enthusiasm) to write a full answer for this. – Mike Brown Feb 14 at 21:58
Consider soap sonar to create the request too. – LachlanB Feb 14 at 22:30
@DaltonConley so fiddler would work great if I was making a webservice call, but if I am hosting that service then fiddler is of no help. – aceinthehole Feb 15 at 14:04

1 Answer

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I found that a tool called TCPTrace really got down to the level I need to for this particular use case.

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