TCPSocketConnection.cpp

00001 /* Copyright (c) 2013 Henry Leinen (henry[dot]leinen [at] online [dot] de)
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00005  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00006  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00007  * furnished to do so, subject to the following conditions:
00008  *
00009  * The above copyright notice and this permission notice shall be included in all copies or
00010  * substantial portions of the Software.
00011  *
00012  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017  */
00018 #include "mbed.h"
00019 #include "TCPSocketConnection.h"
00020 
00021 TCPSocketConnection::TCPSocketConnection() 
00022     : _is_connected(false)
00023 {
00024 }
00025 
00026 int TCPSocketConnection::connect(const char *host, const int port)
00027 {
00028     _socket = Wifi::getInstance()->SocketCreate(TCP);
00029     if (_socket == InvalidSocketHandle)
00030         return -1;
00031         
00032     if (set_address(host, port) != 0) 
00033         return -1;
00034         
00035     if (!Wifi::getInstance()->SocketConnect(_socket, reinterpret_cast<IPADDRESS_t*>(get_address()), port)) {
00036         close();
00037         return -1;
00038     }
00039     _is_connected = true;
00040     
00041     return 0;
00042 }
00043 
00044 bool TCPSocketConnection::is_connected()
00045 {
00046     return _is_connected;
00047 }
00048 
00049 int TCPSocketConnection::send(char *data, int length)
00050 {
00051     if ((_socket == InvalidSocketHandle) || !_is_connected)
00052         return -1;
00053         
00054     int n = Wifi::getInstance()->SocketSend(_socket, data, length);
00055     
00056     return n;
00057 }
00058 
00059 int TCPSocketConnection::send_all(char *data, int length)
00060 {
00061     if ((_socket == InvalidSocketHandle) || !_is_connected)
00062         return -1;
00063         
00064     int n = 0;
00065     
00066     Timer t;
00067     t.start();
00068     
00069     while( n < length) {
00070         int r = Wifi::getInstance()->SocketSend(_socket, &data[n], length-n);
00071         if (r == -1) {
00072             return n;
00073         }
00074         n += r;
00075         
00076         if (_blocking && (t.read_ms() > _timeout)) {
00077             break;
00078         }
00079     }
00080     
00081     return n;  
00082 }
00083 
00084 int TCPSocketConnection::recv(char *data, int length)
00085 {
00086     if ((_socket == InvalidSocketHandle) || !_is_connected)
00087         return -1;
00088         
00089     int n = Wifi::getInstance()->SocketRecv(_socket, data, length);
00090     
00091     return n;
00092 }
00093 
00094 int TCPSocketConnection::recv_all(char *data, int length)
00095 {
00096     if ((_socket == InvalidSocketHandle) || !_is_connected)
00097         return -1;
00098         
00099     int n = 0;
00100     
00101     Timer t;
00102     t.start();
00103     
00104     while( n < length) {
00105         int r = Wifi::getInstance()->SocketRecv(_socket, &data[n], length-n);
00106         if (r == -1) {
00107             return n;
00108         }
00109         n += r;
00110         
00111         if (_blocking && (t.read_ms() > _timeout)) {
00112             break;
00113         }
00114     }
00115     
00116     return n;
00117 }