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POTrying To Send Multipart/Form Data in Objective-C, To µTorrent's Web API
 

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  1. POTrying To Send Multipart/Form Data in Objective-C, To µTorrent's Web API
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    <p>I've been trying to get this code working to send a torrent's data to the µTorrent Web API, unfortunately, as far as I can tell, nobody has ever tried to make a .torrent file handler for µTorrent in Objective-C before, which isn't all that surprising.</p> <p>I have this code here at the moment, but I invariably get the error message: "Error: torrent file content not supplied in form parameter".</p> <pre><code>NSMutableURLRequest * request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@?token=%@&amp;action=add-file", [self getBaseURL], token]]]; NSString * boundary = @"!@!@!@!@!@!@!@!@!"; NSMutableData * body = [NSMutableData alloc]; NSData * torrentFileContents = [[NSFileManager defaultManager] contentsAtPath:fileName]; [request setHTTPMethod:@"POST"]; [request setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary] forHTTPHeaderField:@"Content-Type"]; [request setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", boundary] forHTTPHeaderField:@"enctype"]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"Content-Type: %@\r\n\r\n", @"application/x-bittorrent"] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"torrent_file\"; filename=\"%@\"\r\n", fileName] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[[NSString stringWithFormat:@"Content-Length: %ld\r\n", [torrentFileContents length]] dataUsingEncoding:NSUTF8StringEncoding]]; [body appendData:[NSData dataWithData:torrentFileContents]]; [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]]; [request setHTTPBody:body]; </code></pre>
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