ObjFW  Diff

	void *pool = objc_autoreleasePoolPush();
	OFURL *URL = [request URL];
	OFString *scheme = [URL scheme];
	of_http_request_method_t method = [request method];
	OFMutableString *requestString;
	OFString *user, *password;
	OFDictionary *headers = [request headers];
	OFDataArray *entity = [request entity];
	OFTCPSocket *socket;
	OFHTTPClientResponse *response;
	OFString *line, *version, *redirect, *connectionHeader;
	bool keepAlive;
	OFMutableDictionary *serverHeaders;
	OFEnumerator *keyEnumerator, *objectEnumerator;
	OFString *key, *object;

	}

	if ([headers objectForKey: @"User-Agent"] == nil)
		[requestString appendString:
		    @"User-Agent: Something using ObjFW "
		    @"<https://webkeks.org/objfw>\r\n"];

	if (entity != nil) {
		if ([headers objectForKey: @"Content-Length"] == nil)
			[requestString appendFormat:
			    @"Content-Length: %zd\r\n",
			    [entity itemSize] * [entity count]];

		if ([headers objectForKey: @"Content-Type"] == nil)
			[requestString appendString:
			    @"Content-Type: application/x-www-form-urlencoded; "
			    @"charset=UTF-8\r\n"];
	}

			@throw e;

		/* Reconnect in case a keep-alive connection timed out */
		socket = [self OF_closeAndCreateSocketForRequest: request];
		[socket writeString: requestString];
	}

	if (entity != nil)
		[socket writeBuffer: [entity items]
			     length: [entity count] * [entity itemSize]];

	@try {
		line = [socket readLine];
	} @catch (OFInvalidEncodingException *e) {
		@throw [OFInvalidServerReplyException exception];
	}

	/*
	 * It's possible that the write succeeds on a connection that is
	 * keep-alive, but the connection has already been closed by the remote
	 * end due to a timeout. In this case, we need to reconnect.
	 */
	if (line == nil) {
		socket = [self OF_closeAndCreateSocketForRequest: request];
		[socket writeString: requestString];

		if (entity != nil)
			[socket writeBuffer: [entity items]
				     length: [entity count] *
					     [entity itemSize]];

		@try {
			line = [socket readLine];
		} @catch (OFInvalidEncodingException *e) {
			@throw [OFInvalidServerReplyException exception];
		}
	}

		if (follow) {
			OFHTTPRequest *newRequest;

			newRequest = [OFHTTPRequest requestWithURL: newURL];
			[newRequest setMethod: method];
			[newRequest setHeaders: headers];
			[newRequest setEntity: entity];

			/*
			 * 303 means the request should be converted to a GET
			 * request before redirection. This also means stripping
			 * the entity of the request.
			 */
			if (status == 303) {

					if (![key hasPrefix: @"Content-"])
						[newHeaders setObject: object
							       forKey: key];

				[newRequest
				    setMethod: OF_HTTP_REQUEST_METHOD_GET];
				[newRequest setHeaders: newHeaders];
				[newRequest setEntity: nil];
			}

			[newRequest retain];
			objc_autoreleasePoolPop(pool);
			[newRequest autorelease];

			return [self performRequest: newRequest