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100 lines
2.9 KiB
C++
100 lines
2.9 KiB
C++
#ifndef HTTPCONNECTIONHANDLERPOOL_H
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#define HTTPCONNECTIONHANDLERPOOL_H
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#include <QList>
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#include <QTimer>
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#include <QObject>
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#include <QMutex>
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#include "httpglobal.h"
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#include "httpconnectionhandler.h"
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namespace stefanfrings {
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/**
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Pool of http connection handlers. The size of the pool grows and
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shrinks on demand.
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<p>
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Example for the required configuration settings:
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<code><pre>
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minThreads=4
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maxThreads=100
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cleanupInterval=60000
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readTimeout=60000
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;sslKeyFile=ssl/my.key
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;sslCertFile=ssl/my.cert
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maxRequestSize=16000
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maxMultiPartSize=1000000
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</pre></code>
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After server start, the size of the thread pool is always 0. Threads
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are started on demand when requests come in. The cleanup timer reduces
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the number of idle threads slowly by closing one thread in each interval.
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But the configured minimum number of threads are kept running.
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<p>
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For SSL support, you need an OpenSSL certificate file and a key file.
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Both can be created with the command
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<code><pre>
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openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout my.key -out my.cert
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</pre></code>
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<p>
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Visit http://slproweb.com/products/Win32OpenSSL.html to download the Light version of OpenSSL for Windows.
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<p>
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Please note that a listener with SSL settings can only handle HTTPS protocol. To
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support both HTTP and HTTPS simultaneously, you need to start two listeners on different ports -
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one with SLL and one without SSL.
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@see HttpConnectionHandler for description of the readTimeout
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@see HttpRequest for description of config settings maxRequestSize and maxMultiPartSize
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*/
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class DECLSPEC HttpConnectionHandlerPool : public QObject {
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Q_OBJECT
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Q_DISABLE_COPY(HttpConnectionHandlerPool)
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public:
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/**
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Constructor.
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@param settings Configuration settings for the HTTP server. Must not be 0.
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@param requestHandler The handler that will process each received HTTP request.
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@warning The requestMapper gets deleted by the destructor of this pool
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*/
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HttpConnectionHandlerPool(QSettings* settings, HttpRequestHandler* requestHandler);
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/** Destructor */
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virtual ~HttpConnectionHandlerPool();
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/** Get a free connection handler, or 0 if not available. */
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HttpConnectionHandler* getConnectionHandler();
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private:
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/** Settings for this pool */
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QSettings* settings;
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/** Will be assigned to each Connectionhandler during their creation */
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HttpRequestHandler* requestHandler;
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/** Pool of connection handlers */
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QList<HttpConnectionHandler*> pool;
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/** Timer to clean-up unused connection handler */
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QTimer cleanupTimer;
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/** Used to synchronize threads */
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QMutex mutex;
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/** The SSL configuration (certificate, key and other settings) */
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QSslConfiguration* sslConfiguration;
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/** Load SSL configuration */
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void loadSslConfig();
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private slots:
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/** Received from the clean-up timer. */
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void cleanup();
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};
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} // end of namespace
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#endif // HTTPCONNECTIONHANDLERPOOL_H
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