C++ HTTPResponse::get方法代码示例

ofxHttpResponse ofxHttpUtils::getUrl(string url){

   ofxHttpResponse response;
   try{
		URI uri(url.c_str());
		std::string path(uri.getPathAndQuery());
		if (path.empty()) path = "/";

		HTTPClientSession session(uri.getHost(), uri.getPort());
		HTTPRequest req(HTTPRequest::HTTP_GET, path, HTTPMessage::HTTP_1_1);
		if(auth.getUsername()!="") auth.authenticate(req);
		session.setTimeout(Poco::Timespan(timeoutSeconds,0));
		session.sendRequest(req);
		HTTPResponse res;
		istream& rs = session.receiveResponse(res);

		response=ofxHttpResponse(res, rs, path);

		if(response.status>=300 && response.status<400){
			Poco::URI uri(req.getURI());
			uri.resolve(res.get("Location"));
			response.location = uri.toString();
		}

		ofNotifyEvent( newResponseEvent, response, this );

		//std::cout << res.getStatus() << " " << res.getReason() << std::endl;
		//StreamCopier::copyStream(rs, std::cout);

	}catch (Exception& exc){
		std::cerr << exc.displayText() << "\n";
	}
	return response;

}

int InternetHelper::processRelocation(const HTTPResponse &response,
                                      std::ostream &responseStream) {
  std::string newLocation = response.get("location", "");
  if (!newLocation.empty()) {
    g_log.information() << "url relocated to " << newLocation;
    return this->sendRequest(newLocation, responseStream);
  } else {
    g_log.warning("Apparent relocation did not give new location\n");
    return response.getStatus();
  }
}

// ----------------------------------------------------------------------
ofxHttpResponse ofxHttpUtils::getUrl(string url){

   ofxHttpResponse response;
   try{
		URI uri(url.c_str());
		std::string path(uri.getPathAndQuery());
		if (path.empty()) path = "/";

		HTTPRequest req(HTTPRequest::HTTP_GET, path, HTTPMessage::HTTP_1_1);

		if(auth.getUsername()!="") auth.authenticate(req);

        if(sendCookies){
        	for(unsigned i=0; i<cookies.size(); i++){
        		NameValueCollection reqCookies;
        		reqCookies.add(cookies[i].getName(),cookies[i].getValue());
        		req.setCookies(reqCookies);
        	}
        }

		HTTPResponse res;
        ofPtr<HTTPSession> session;
        istream * rs;
        if(uri.getScheme()=="https"){
        	HTTPSClientSession * httpsSession = new HTTPSClientSession(uri.getHost(), uri.getPort());//,context);
        	httpsSession->setTimeout(Poco::Timespan(timeoutSeconds,0));
        	httpsSession->sendRequest(req);
        	rs = &httpsSession->receiveResponse(res);
        	session = ofPtr<HTTPSession>(httpsSession);
        }else{
        	HTTPClientSession * httpSession = new HTTPClientSession(uri.getHost(), uri.getPort());
        	httpSession->setTimeout(Poco::Timespan(timeoutSeconds,0));
        	httpSession->sendRequest(req);
        	rs = &httpSession->receiveResponse(res);
        	session = ofPtr<HTTPSession>(httpSession);
        }

		response=ofxHttpResponse(res, *rs, url);

		if(sendCookies){
			cookies.insert(cookies.begin(),response.cookies.begin(),response.cookies.end());
		}

		if(response.status>=300 && response.status<400){
			Poco::URI uri(req.getURI());
			uri.resolve(res.get("Location"));
			response.location = uri.toString();
		}

		ofNotifyEvent( newResponseEvent, response, this );

		//std::cout << res.getStatus() << " " << res.getReason() << std::endl;
		//StreamCopier::copyStream(rs, std::cout);

	}catch (Exception& exc){
		ofLogError("ofxHttpUtils") << exc.displayText();
        response.status = -1;
        response.reasonForStatus = exc.displayText();
    	ofNotifyEvent(newResponseEvent, response, this);
	}
	return response;

}

// ----------------------------------------------------------------------
ofxHttpResponse ofxHttpUtils::doPostForm(ofxHttpForm & form){
	ofxHttpResponse response;
    
    try{
        URI uri( form.action.c_str() );
        std::string path(uri.getPathAndQuery());
        if (path.empty()) path = "/";

        //HTTPClientSession session(uri.getHost(), uri.getPort());
		HTTPRequest req(HTTPRequest::HTTP_POST, path, HTTPMessage::HTTP_1_1);
		if(auth.getUsername()!="") auth.authenticate(req);

		if(sendCookies){
			for(unsigned i=0; i<cookies.size(); i++){
				NameValueCollection reqCookies;
				reqCookies.add(cookies[i].getName(),cookies[i].getValue());
				req.setCookies(reqCookies);
			}
		}

		for (unsigned int i = 0; i < form.headerIds.size(); ++i) {
			const std::string name = form.headerIds[i].c_str();
			const std::string val = form.headerValues[i].c_str();
			req.set(name, val);
		}


        HTTPResponse res;
		HTMLForm pocoForm;
		// create the form data to send
        if(form.formFiles.size()>0) {
			pocoForm.setEncoding(HTMLForm::ENCODING_MULTIPART);
        }
        else {
			pocoForm.setEncoding(HTMLForm::ENCODING_URL);
        }

		// form values
		for(unsigned i=0; i<form.formIds.size(); i++){
			const std::string name = form.formIds[i].c_str();
			const std::string val = form.formValues[i].c_str();
			pocoForm.set(name, val);
		}

		map<string,string>::iterator it;
		for(it = form.formFiles.begin(); it!=form.formFiles.end(); it++){
			string fileName = it->second.substr(it->second.find_last_of('/')+1);
			ofLogVerbose("ofxHttpUtils") << "adding file: " << fileName << " path: " << it->second;
			pocoForm.addPart(it->first,new FilePartSource(it->second));
		}

        pocoForm.prepareSubmit(req);

        ofPtr<HTTPSession> session;
        istream * rs;
        if(uri.getScheme()=="https"){
        	HTTPSClientSession * httpsSession = new HTTPSClientSession(uri.getHost(), uri.getPort());//,context);
        	httpsSession->setTimeout(Poco::Timespan(20,0));
            pocoForm.write(httpsSession->sendRequest(req));
        	rs = &httpsSession->receiveResponse(res);
        	session = ofPtr<HTTPSession>(httpsSession);
        }else{
        	HTTPClientSession * httpSession = new HTTPClientSession(uri.getHost(), uri.getPort());
        	httpSession->setTimeout(Poco::Timespan(20,0));
            pocoForm.write(httpSession->sendRequest(req));
        	rs = &httpSession->receiveResponse(res);
        	session = ofPtr<HTTPSession>(httpSession);
        }

		response = ofxHttpResponse(res, *rs, form.action);

		if(sendCookies){
			cookies.insert(cookies.begin(),response.cookies.begin(),response.cookies.end());
		}

		if(response.status>=300 && response.status<400){
			Poco::URI uri(req.getURI());
			uri.resolve(res.get("Location"));
			response.location = uri.toString();
		}

    	ofNotifyEvent(newResponseEvent, response, this);


    }catch (Exception& exc){
    	ofLogError("ofxHttpUtils") << "ofxHttpUtils error doPostForm -- " << form.action.c_str();
        
        //ofNotifyEvent(notifyNewError, "time out", this);

        // for now print error, need to broadcast a response
    	ofLogError("ofxHttpUtils") << exc.displayText();
        response.status = -1;
        response.reasonForStatus = exc.displayText();
    	ofNotifyEvent(newResponseEvent, response, this);

    }

    return response;
}

// ----------------------------------------------------------------------
ofxHttpResponse ofxHttpUtils::postData(string url, const ofBuffer & data,  string contentType){
	ofxHttpResponse response;
	try{
		URI uri( url.c_str() );
		std::string path(uri.getPathAndQuery());
		if (path.empty()) path = "/";

		//HTTPClientSession session(uri.getHost(), uri.getPort());
		HTTPRequest req(HTTPRequest::HTTP_POST, path, HTTPMessage::HTTP_1_1);
		if(auth.getUsername()!="") auth.authenticate(req);

		if(sendCookies){
			for(unsigned i=0; i<cookies.size(); i++){
				NameValueCollection reqCookies;
				reqCookies.add(cookies[i].getName(),cookies[i].getValue());
				req.setCookies(reqCookies);
			}
		}

		if(contentType!=""){
			req.setContentType(contentType);
		}

		req.setContentLength(data.size());

		HTTPResponse res;
		ofPtr<HTTPSession> session;
		istream * rs;
		if(uri.getScheme()=="https"){
			HTTPSClientSession * httpsSession = new HTTPSClientSession(uri.getHost(), uri.getPort());//,context);
			httpsSession->setTimeout(Poco::Timespan(20,0));
			httpsSession->sendRequest(req) << data;
			rs = &httpsSession->receiveResponse(res);
			session = ofPtr<HTTPSession>(httpsSession);
		}else{
			HTTPClientSession * httpSession = new HTTPClientSession(uri.getHost(), uri.getPort());
			httpSession->setTimeout(Poco::Timespan(20,0));
			httpSession->sendRequest(req) << data;
			rs = &httpSession->receiveResponse(res);
			session = ofPtr<HTTPSession>(httpSession);
		}

		response = ofxHttpResponse(res, *rs, url);

		if(sendCookies){
			cookies.insert(cookies.begin(),response.cookies.begin(),response.cookies.end());
		}

		if(response.status>=300 && response.status<400){
			Poco::URI uri(req.getURI());
			uri.resolve(res.get("Location"));
			response.location = uri.toString();
		}

		ofNotifyEvent(newResponseEvent, response, this);
	}catch (Exception& exc){

    	ofLogError("ofxHttpUtils") << "ofxHttpUtils error postData --";

        //ofNotifyEvent(notifyNewError, "time out", this);

        // for now print error, need to broadcast a response
    	ofLogError("ofxHttpUtils") << exc.displayText();
        response.status = -1;
        response.reasonForStatus = exc.displayText();
    	ofNotifyEvent(newResponseEvent, response, this);

    }
	return response;
}

std::istream* HTTPStreamFactory::open(const URI& uri)
{
	poco_assert (uri.getScheme() == "http");

	URI resolvedURI(uri);
	URI proxyUri;
	HTTPClientSession* pSession = 0;
	HTTPResponse res;
	bool retry = false;
	bool authorize = false;
	std::string username;
	std::string password;

	try
	{
		do
		{
			if (!pSession)
			{
				pSession = new HTTPClientSession(resolvedURI.getHost(), resolvedURI.getPort());
			
				if (proxyUri.empty())
					pSession->setProxy(_proxyHost, _proxyPort);
				else
					pSession->setProxy(proxyUri.getHost(), proxyUri.getPort());
				pSession->setProxyCredentials(_proxyUsername, _proxyPassword);
			}
						
			std::string path = resolvedURI.getPathAndQuery();
			if (path.empty()) path = "/";
			HTTPRequest req(HTTPRequest::HTTP_GET, path, HTTPMessage::HTTP_1_1);
			
			if (authorize)
			{
				HTTPCredentials::extractCredentials(uri, username, password);
				HTTPCredentials cred(username, password);
				cred.authenticate(req, res);
			}
			
			pSession->sendRequest(req);
			std::istream& rs = pSession->receiveResponse(res);
			bool moved = (res.getStatus() == HTTPResponse::HTTP_MOVED_PERMANENTLY || 
						  res.getStatus() == HTTPResponse::HTTP_FOUND || 
						  res.getStatus() == HTTPResponse::HTTP_SEE_OTHER ||
						  res.getStatus() == HTTPResponse::HTTP_TEMPORARY_REDIRECT);
			if (moved)
			{
				resolvedURI.resolve(res.get("Location"));
				if (!username.empty())
				{
					resolvedURI.setUserInfo(username + ":" + password);
				}
				throw URIRedirection(resolvedURI.toString());
			}
			else if (res.getStatus() == HTTPResponse::HTTP_OK)
			{
				return new HTTPResponseStream(rs, pSession);
			}
			else if (res.getStatus() == HTTPResponse::HTTP_USEPROXY && !retry)
			{
				// The requested resource MUST be accessed through the proxy 
				// given by the Location field. The Location field gives the 
				// URI of the proxy. The recipient is expected to repeat this 
				// single request via the proxy. 305 responses MUST only be generated by origin servers.
				// only use for one single request!
				proxyUri.resolve(res.get("Location"));
				delete pSession; pSession = 0;
				retry = true; // only allow useproxy once
			}
			else if (res.getStatus() == HTTPResponse::HTTP_UNAUTHORIZED && !authorize)
			{
				authorize = true;
				retry = true;
				Poco::NullOutputStream null;
				Poco::StreamCopier::copyStream(rs, null);
			}
			else throw HTTPException(res.getReason(), uri.toString());
		}
		while (retry);
		throw HTTPException("Too many redirects", uri.toString());
	}
	catch (...)
	{
		delete pSession;
		throw;
	}
}