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/***************************************************************************** |
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* |
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* $Id$ |
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* |
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* Copyright 2017 Richard Hacker (lerichi at gmx dot net) |
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* |
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* This file is part of the pdserv library. |
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* |
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* The pdserv library is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published |
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* by the Free Software Foundation, either version 3 of the License, or (at |
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* your option) any later version. |
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* |
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* The pdserv library is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public |
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* License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with the pdserv library. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*****************************************************************************/ |
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#ifndef TCP_H |
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#define TCP_H |
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#include <stdint.h> |
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#include <unistd.h> // ssize_t |
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#include <ostream> |
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#include <vector> |
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#include <string> |
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#include <sys/socket.h> // struct sockaddr |
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#include <netinet/tcp.h> // setsockopt() |
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#include "PThread.h" |
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namespace net { |
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// Open a server socket. |
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class TCPSocket { |
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public: |
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// Returns: true if file descriptor is valid |
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operator bool() const; |
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void setSockOpt(int level, int name, int val); |
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// return: string <IP><sep><port> of listen socket |
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std::string getAddr(char sep = ':') const; |
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// select between multiple sockets. returns first available socket or NULL |
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static TCPSocket* select(std::vector<TCPSocket*> const& sockets, int msec = -1); |
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protected: |
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/// Constructor |
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TCPSocket(); |
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~TCPSocket(); |
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void close(); |
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// Returns success |
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// throws std::string() on error |
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bool listenTo( |
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const std::string& interface, const std::string& port, |
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int backlog); |
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// return: string of remote host |
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// thows: std::string on error |
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std::string accept(TCPSocket* server); |
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std::string reject(); |
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bool readable(struct timeval *timeout) const; |
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ssize_t readData ( void *buf, size_t len); |
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ssize_t writeData(const void *buf, size_t len); |
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private: |
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int fd; |
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struct sockaddr addr; |
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}; |
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class TCPServer: public TCPSocket { |
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public: |
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TCPServer(int backlog); |
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// Returns success |
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// throws std::string() on error |
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bool listenTo( |
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const std::string& interface, const std::string& port); |
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bool isPendingConnection(int msec = -1); |
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std::string reject(); |
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private: |
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int backlog; |
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}; |
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class TCPSession: public pthread::Thread, public TCPSocket { |
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public: |
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// Accept a connection |
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// throws: std::string on error |
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TCPSession(TCPServer *); |
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// return: reverse DNS lookup peer name |
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std::string getPeerName() const; |
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// Wait for socket read to become ready |
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bool isPendingRead(int msec) const; |
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// read() from socket |
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// |
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// return: >=0: bytes read from socket |
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// <0: -errno on error |
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ssize_t readData ( void *buf, size_t len); |
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// write() to socket |
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// |
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// return: >=0: bytes written to socket |
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// <0: -errno on error |
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ssize_t writeData(const void *buf, size_t len); |
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protected: |
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~TCPSession() {} |
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private: |
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std::string peerName; |
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}; |
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} |
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#endif // TCP_H |
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