95 lines
4.3 KiB
C++
95 lines
4.3 KiB
C++
/// \file socket.h
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/// A handy Socket wrapper library.
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/// Written by Jaron Vietor in 2010 for DDVTech
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#pragma once
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#include <string>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <fcntl.h>
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//for being friendly with Socket::Connection down below
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namespace Buffer{class user;};
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///Holds Socket tools.
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namespace Socket{
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/// This class is for easy communicating through sockets, either TCP or Unix.
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class Connection{
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private:
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int sock; ///< Internally saved socket number.
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int pipes[2]; ///< Internally saved file descriptors for pipe socket simulation.
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std::string remotehost; ///< Stores remote host address.
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unsigned int up;
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unsigned int down;
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unsigned int conntime;
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std::string downbuffer; ///< Stores temporary data coming in.
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std::string upbuffer; ///< Stores temporary data going out.
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int iread(void * buffer, int len); ///< Incremental read call.
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int iwrite(const void * buffer, int len); ///< Incremental write call.
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bool iread(std::string & buffer); ///< Incremental write call that is compatible with std::string.
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bool iwrite(std::string & buffer); ///< Write call that is compatible with std::string.
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public:
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//friends
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friend class Buffer::user;
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//constructors
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Connection(); ///< Create a new disconnected base socket.
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Connection(int sockNo); ///< Create a new base socket.
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Connection(std::string hostname, int port, bool nonblock); ///< Create a new TCP socket.
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Connection(std::string adres, bool nonblock = false); ///< Create a new Unix Socket.
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Connection(int write, int read); ///< Simulate a socket using two file descriptors.
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//generic methods
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void close(); ///< Close connection.
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void setBlocking(bool blocking); ///< Set this socket to be blocking (true) or nonblocking (false).
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std::string getHost(); ///< Gets hostname for connection, if available.
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void setHost(std::string host); ///< Sets hostname for connection manually.
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int getSocket(); ///< Returns internal socket number.
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std::string getError(); ///< Returns a string describing the last error that occured.
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bool connected() const; ///< Returns the connected-state for this socket.
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//buffered i/o methods
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bool spool(); ///< Updates the downbuffer and upbuffer internal variables.
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bool flush(); ///< Updates the downbuffer and upbuffer internal variables until upbuffer is empty.
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std::string & Received(); ///< Returns a reference to the download buffer.
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void Send(std::string data); ///< Appends data to the upbuffer.
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//stats related methods
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unsigned int dataUp(); ///< Returns total amount of bytes sent.
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unsigned int dataDown(); ///< Returns total amount of bytes received.
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std::string getStats(std::string C); ///< Returns a std::string of stats, ended by a newline.
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friend class Server;
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bool Error; ///< Set to true if a socket error happened.
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bool Blocking; ///< Set to true if a socket is currently or wants to be blocking.
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//overloaded operators
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bool operator== (const Connection &B) const;
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bool operator!= (const Connection &B) const;
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operator bool() const;
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};
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/// This class is for easily setting up listening socket, either TCP or Unix.
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class Server{
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private:
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int sock; ///< Internally saved socket number.
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bool IPv6bind(int port, std::string hostname, bool nonblock); ///< Attempt to bind an IPv6 socket
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bool IPv4bind(int port, std::string hostname, bool nonblock); ///< Attempt to bind an IPv4 socket
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public:
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Server(); ///< Create a new base Server.
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Server(int port, std::string hostname = "0.0.0.0", bool nonblock = false); ///< Create a new TCP Server.
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Server(std::string adres, bool nonblock = false); ///< Create a new Unix Server.
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Connection accept(bool nonblock = false); ///< Accept any waiting connections.
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bool connected() const; ///< Returns the connected-state for this socket.
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void close(); ///< Close connection.
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int getSocket(); ///< Returns internal socket number.
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};
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/// Connect to a stream on the system.
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Connection getStream(std::string streamname);
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/// Create a stream on the system.
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Server makeStream(std::string streamname);
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};
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