Web service not working in China - 400 Bad Request

Hi Folks,

I have a standard .NET 2.0 AMSX web service which has been working for a few years. We're trying to connect a server in China, and its coming up with 400 Bad Request.

The browser (ie6) can access the web server through https://dnsname

The browser can also access the webservice itself though https://dnsname/webservice.asmx

But the actual client software is still coming up with 400 bad request - any ideas please ?

thanks

LVL 8
plqAsked:
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deightonConnect With a Mentor Commented:
can the client connect to other web services, or is it just that one?
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plqAuthor Commented:
Can you suggest a public web service that we could test with ? thanks
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Alpesh PatelAssistant ConsultantCommented:
pls check firewall settings.
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deightonCommented:
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plqAuthor Commented:
We're connecting back with them in a couple of hours so we'll try that then

Regarding firewall, wsdl doesn't use any ports except http/https, we know it works from IE, so I don't think it could be a firewall issue ??
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plqAuthor Commented:
Yes, that service works, but ours doesnt !
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plqAuthor Commented:
Furthermore, our webservice works through the browser, I changed web.config to allow it to work remotely, and thats fine. I can now "invoke" a simple method from the browser https://dnsname/webservice.asmx, no problem.

But from the program, it still raising 400 bad request.


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manlimnagConnect With a Mentor Commented:
May be on client machine firewall is not allowing the application to call web service, but ie being trusted application its working. So check client firewall setings and virus protection softwares
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plqAuthor Commented:
Lost contact with the client and no possibility now of ever taking this further
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plqAuthor Commented:
lost contact with client, so this is a dead end, thanks for helping anyway
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