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.NET Forum / .NET Framework / New Users / October 2004Expect100Continue
This property of the System.Net.ServicePointManager class is not available in the Compact Framework. I apparently need it for one client of ours. They have a proxy server and we are getting a "417 Expectation Failed" error when posting data. Any ideas? Any way to tell the .NET CF to not expect a "100 - Continue" message when posting data? http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlr fsystemnetservicepointmanagermemberstopic.asp Hi Mike, Now I am researching the issue and I will update you with new information ASAP. Best regards, Peter Huang Microsoft Online Partner Support  SignatureGet Secure! - www.microsoft.com/security This posting is provided "AS IS" with no warranties, and confers no rights. Hi Now I am involving other person in this field. And we will update you with new information ASAP. Best regards, Peter Huang Microsoft Online Partner Support SignatureGet Secure! - www.microsoft.com/security This posting is provided "AS IS" with no warranties, and confers no rights. Hi Mike, HTTP error "417 Expectation Failed" is received, due proxy settings of your web services connection. Unfortunately, Expect100Continue will not solve your problem. Are you setting proxy properly? Could you send me the proxy setting code? Thanks Ercan Turkarslan (Siemens Business Services Inc.) Microsoft Mobile Devices Division Developer Support I am able to do HTTP Gets, I only get the error when doing a POST. Also, the same code works at other locations. > Hi Mike, > [quoted text clipped - 11 lines] > Ercan Turkarslan (Siemens Business Services Inc.) > Microsoft Mobile Devices Division Developer Support Could you clarify what the other locations are? I still need to see how you are setting the proxy. Thanks Ercan Turkarslan (Siemens Business Services Inc.) Microsoft Mobile Devices Division Developer Support The other locations are other hospitals around the U.S. One is in Baton Rouge, LA. Here is the code I use to create a WebProxy object and assign it to a WebRequest object: myUri = New Uri(Utils.GetOption(cmd, "ProxyServer")) ' Associate the new Uri object to the myProxy object. myProxy.Address = myUri sProxyUser = Utils.GetOption(cmd, "ProxyUser") If sProxyUser <> "" Then sProxyDomain = Utils.GetOption(cmd, "ProxyDomain") If sProxyDomain = "" Then MyCred = New System.Net.NetworkCredential(sProxyUser, Utils.GetOption(cmd, "ProxyPwd")) Else MyCred = New System.Net.NetworkCredential(sProxyUser, Utils.GetOption(cmd, "ProxyPwd"), sProxyDomain) End If myProxy.Credentials = MyCred myRequest.Credentials = MyCred End If myRequest.Proxy = myProxy > Could you clarify what the other locations are? > [quoted text clipped - 4 lines] > Ercan Turkarslan (Siemens Business Services Inc.) > Microsoft Mobile Devices Division Developer Support Hi Mike, Your proxy definition looks like correct. Unfortunately, current version of .NET CF does not support NTLM authentication. Could you double check which authentication does the proxy server use? Are you connecting from a .NET CF application at other locations? Thanks Ercan Turkarslan There is no authentication going on because the user does not supply a username or password and the HTTP GET's go through. > Hi Mike, > [quoted text clipped - 9 lines] > > Ercan Turkarslan Hi Mike, According to your code you are retrieving ProxyUser and ProxyDomain values from a class called Utils. And you are creating NetworkCredentials based on those values. So your proxy definition contains uses a username and password. I would be grateful if you could check what is the authentication protocol the proxy server is using. I would appreciate if you could also take the proxy server out of the picture and try to access the Web Services Server without proxy. Are you able to successfully connect to the Web Services Server in that case? Could you also tell me whether you are using .NET CF on other locations from which you can access? Thanks Ercan Turkarslan a-ercant@microsoft.com Mobile Devices Division Developer Support It only does the NetworkCredentials If sProxyUser <> "" and at the hospital in question, that variable is blank, so it is not assigning credentials. I will try to find out the authentication protocol but it may take a while - I don't know anyone who knows that information but I might be able to find out. I'm not trying to access a Web Services Server - it's acessing a Linux/Apache server. The code works without a proxy server and with other proxy servers, I'm trying to get it to work with 1 particular proxy server. Yes, I am using .NET CF at other locations successfully with and without proxy servers. > Hi Mike, > [quoted text clipped - 20 lines] > > Mobile Devices Division Developer Support Hi Mike, If the code works fine without the Proxy Server as you have stated, we should concentrate on the Proxy Server first. What is the Proxy Server? What are the authentications supported by the Proxy Server? Current version of .NET CF only supports digest authentication. Does using the proxy server cause timeout? Thanks Ercan Turkarslan Microsoft Mobile Devices Developer Support This posting is provided "AS IS" with no warranties, and confers no rights. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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