src/lib/platform/sockets/tcp.h

   1 #pragma once
   2 /*
   3  * This file is part of the libCEC(R) library.
   4  *
   5  * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited.  All rights reserved.
   6  * libCEC(R) is an original work, containing original code.
   7  *
   8  * libCEC(R) is a trademark of Pulse-Eight Limited.
   9  *
  10  * This program is dual-licensed; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  23  *
  24  *
  25  * Alternatively, you can license this library under a commercial license,
  26  * please contact Pulse-Eight Licensing for more information.
  27  *
  28  * For more information contact:
  29  * Pulse-Eight Licensing       <license@pulse-eight.com>
  30  *     http://www.pulse-eight.com/
  31  *     http://www.pulse-eight.net/
  32  */
  33
  34 #include "socket.h"
  35
  36 using namespace std;
  37
  38 namespace PLATFORM
  39 {
  40   class CTcpSocket : public CCommonSocket<tcp_socket_t>
  41   {
  42     public:
  43       CTcpSocket(const CStdString &strHostname, uint16_t iPort) :
  44         CCommonSocket<tcp_socket_t>(INVALID_SOCKET_VALUE, strHostname),
  45         m_iPort(iPort) {}
  46
  47       virtual ~CTcpSocket(void) {}
  48
  49       virtual bool Open(uint64_t iTimeoutMs = 0)
  50       {
  51         bool bReturn(false);
  52         struct addrinfo *address(NULL), *addr(NULL);
  53         if (!TcpResolveAddress(m_strName.c_str(), m_iPort, &m_iError, &address))
  54         {
  55           m_strError = strerror(m_iError);
  56           return bReturn;
  57         }
  58
  59         for(addr = address; !bReturn && addr; addr = addr->ai_next)
  60         {
  61           m_socket = TcpCreateSocket(addr, &m_iError, iTimeoutMs);
  62           if (m_socket != INVALID_SOCKET_VALUE)
  63             bReturn = true;
  64           else
  65             m_strError = strerror(m_iError);
  66         }
  67
  68         freeaddrinfo(address);
  69         return bReturn;
  70       }
  71
  72       virtual void Close(void)
  73       {
  74         TcpSocketClose(m_socket);
  75         m_socket = INVALID_SOCKET_VALUE;
  76       }
  77
  78       virtual void Shutdown(void)
  79       {
  80         TcpSocketShutdown(m_socket);
  81         m_socket = INVALID_SOCKET_VALUE;
  82       }
  83
  84       virtual ssize_t Write(void* data, size_t len)
  85       {
  86         return TcpSocketWrite(m_socket, &m_iError, data, len);
  87       }
  88
  89       virtual ssize_t Read(void* data, size_t len, uint64_t iTimeoutMs = 0)
  90       {
  91         return TcpSocketRead(m_socket, &m_iError, data, len, iTimeoutMs);
  92       }
  93
  94       virtual bool IsOpen(void)
  95       {
  96         return m_socket != INVALID_SOCKET_VALUE;
  97       }
  98
  99     protected:
 100       virtual tcp_socket_t TcpCreateSocket(struct addrinfo* addr, int* iError, uint64_t iTimeout)
 101       {
 102         tcp_socket_t fdSock = socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
 103         if (fdSock == INVALID_SOCKET_VALUE)
 104         {
 105           *iError = errno;
 106           return (tcp_socket_t)INVALID_SOCKET_VALUE;
 107         }
 108
 109         if (!TcpConnectSocket(fdSock, addr, iError, iTimeout))
 110         {
 111           TcpSocketClose(fdSock);
 112           return (tcp_socket_t)INVALID_SOCKET_VALUE;
 113         }
 114
 115         TcpSetNoDelay(fdSock);
 116
 117         return fdSock;
 118       }
 119
 120       uint16_t   m_iPort;
 121   };
 122
 123   class CTcpConnection : public CProtectedSocket<CTcpSocket>
 124   {
 125   public:
 126     CTcpConnection(const CStdString &strHostname, uint16_t iPort) :
 127       CProtectedSocket<CTcpSocket> (new CTcpSocket(strHostname, iPort)) {}
 128     virtual ~CTcpConnection(void) {}
 129   };
 130 };