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POJSON POST Request on the iPhone (Using HTTPS)
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  1. POJSON POST Request on the iPhone (Using HTTPS)
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    copied!<p>I have a WCF service hosted and I'm trying to use it within an iPhone app as a JSON POST request. I plan on using the JSON serializer later, but this is what I have for the request:</p> <pre><code> NSString *jsonRequest = @"{\"username\":\"user\",\"password\":\"letmein\"}"; NSLog(@"Request: %@", jsonRequest); NSURL *url = [NSURL URLWithString:@"https://mydomain.com/Method/"]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url]; NSData *requestData = [NSData dataWithBytes:[jsonRequest UTF8String] length:[jsonRequest length]]; [request setHTTPMethod:@"POST"]; [request setValue:@"application/json" forHTTPHeaderField:@"Accept"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setValue:[NSString stringWithFormat:@"%d", [requestData length]] forHTTPHeaderField:@"Content-Length"]; [request setHTTPBody: requestData]; [NSURLConnection connectionWithRequest:[request autorelease] delegate:self]; </code></pre> <p>In my data received I'm just printing it to the console:</p> <pre><code>- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { NSMutableData *d = [[NSMutableData data] retain]; [d appendData:data]; NSString *a = [[NSString alloc] initWithData:d encoding:NSASCIIStringEncoding]; NSLog(@"Data: %@", a); } </code></pre> <p>And within this response I get this message:</p> <pre><code>Data: &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;title&gt;Request Error&lt;/title&gt; &lt;style&gt; &lt;!-- I've took this out as there's lots of it and it's not relevant! --&gt; &lt;/style&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="content"&gt; &lt;p class="heading1"&gt;Request Error&lt;/p&gt; &lt;p xmlns=""&gt;The server encountered an error processing the request. Please see the &lt;a rel="help-page" href="https://mydomain.com/Method/help"&gt;service help page&lt;/a&gt; for constructing valid requests to the service.&lt;/p&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Does anyone know why this happens and where I'm going wrong?</p> <p>I've read about using <a href="http://allseeing-i.com/ASIHTTPRequest/" rel="noreferrer">ASIHTTPPost</a> instead but I can't get the demo to run in iOS4 :(</p> <p>Thanks</p> <p>EDIT:</p> <p>I've just used to <a href="http://www.charlesproxy.com/" rel="noreferrer">CharlesProxy</a> to sniff out what's happening when I call from the iPhone (Simulator) and this is what it gave me: <img src="https://i.stack.imgur.com/mSzC7.png" alt="alt text"></p> <p><strike>The only thing strange I've noticed is it says "SSL Proxying not enabled for this host: enable in Proxy Settings, SSL locations". Does anyone know what this means?</strike> (This also happens in my working windows client).</p> <p>I've just ran this on my windows client and the only thing that is different is the Request and Response text which is encrypted. Am I missing something in order to use a secure HTTP connection to do this?</p> <p>NEW EDIT: This works with a non-HTTPS request such as: <a href="http://maps.googleapis.com/maps/api/geocode/json?address=UK&amp;sensor=true" rel="noreferrer">http://maps.googleapis.com/maps/api/geocode/json?address=UK&amp;sensor=true</a>. So I guess the problem is getting the iPhone to send the POST properly over SSL?</p> <p>I am also using these methods:</p> <pre><code>- (void) connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge { if([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) { [challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge]; } [challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge]; } - (void) connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace { if([[protectionSpace authenticationMethod] isEqualToString:NSURLAuthenticationMethodServerTrust]) { return YES; } } </code></pre> <p>This allows me to get this far. If I don't use them I get an error sent back saying:</p> <blockquote> <p>The certificate for this server is invalid. You might be connecting to a server that is pretending to be “mydomain.com” which could put your confidential information at risk.</p> </blockquote>
 

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