jiang hao / WIZnetInterface

11111

Dependents:   espyun1

Fork of WIZnetInterface by WIZnet

Socket/TCPSocketServer.cpp@31:fc14e4330419, 2016-11-04 (annotated)

Committer:
jh_ndm
Date:
Fri Nov 04 07:38:07 2016 +0000
Revision:
31:fc14e4330419
Parent:
0:6f28332c466f 
asdfwe

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Soohwan Kim 0:6f28332c466f 1 /* Copyright (C) 2012 mbed.org, MIT License
Soohwan Kim 0:6f28332c466f 2 *
Soohwan Kim 0:6f28332c466f 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Soohwan Kim 0:6f28332c466f 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
Soohwan Kim 0:6f28332c466f 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
Soohwan Kim 0:6f28332c466f 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
Soohwan Kim 0:6f28332c466f 7 * furnished to do so, subject to the following conditions:
Soohwan Kim 0:6f28332c466f 8 *
Soohwan Kim 0:6f28332c466f 9 * The above copyright notice and this permission notice shall be included in all copies or
Soohwan Kim 0:6f28332c466f 10 * substantial portions of the Software.
Soohwan Kim 0:6f28332c466f 11 *
Soohwan Kim 0:6f28332c466f 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Soohwan Kim 0:6f28332c466f 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Soohwan Kim 0:6f28332c466f 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Soohwan Kim 0:6f28332c466f 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Soohwan Kim 0:6f28332c466f 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Soohwan Kim 0:6f28332c466f 17 */
Soohwan Kim 0:6f28332c466f 18
Soohwan Kim 0:6f28332c466f 19 #include "TCPSocketServer.h"
Soohwan Kim 0:6f28332c466f 20
Soohwan Kim 0:6f28332c466f 21 TCPSocketServer::TCPSocketServer() {}
Soohwan Kim 0:6f28332c466f 22
Soohwan Kim 0:6f28332c466f 23 // Server initialization
Soohwan Kim 0:6f28332c466f 24 int TCPSocketServer::bind(int port)
Soohwan Kim 0:6f28332c466f 25 {
Soohwan Kim 0:6f28332c466f 26 // set the listen_port for next connection.
Soohwan Kim 0:6f28332c466f 27 listen_port = port;
Soohwan Kim 0:6f28332c466f 28 if (_sock_fd < 0) {
Soohwan Kim 0:6f28332c466f 29 _sock_fd = eth->new_socket();
Soohwan Kim 0:6f28332c466f 30 if (_sock_fd < 0) {
Soohwan Kim 0:6f28332c466f 31 return -1;
Soohwan Kim 0:6f28332c466f 32 }
Soohwan Kim 0:6f28332c466f 33 }
Soohwan Kim 0:6f28332c466f 34 // set TCP protocol
Soohwan Kim 0:6f28332c466f 35 eth->setProtocol(_sock_fd, WIZnet_Chip::TCP);
Soohwan Kim 0:6f28332c466f 36 // set local port
Soohwan Kim 0:6f28332c466f 37 eth->sreg<uint16_t>(_sock_fd, Sn_PORT, port);
Soohwan Kim 0:6f28332c466f 38 // connect the network
Soohwan Kim 0:6f28332c466f 39 eth->scmd(_sock_fd, WIZnet_Chip::OPEN);
Soohwan Kim 0:6f28332c466f 40 return 0;
Soohwan Kim 0:6f28332c466f 41 }
Soohwan Kim 0:6f28332c466f 42
Soohwan Kim 0:6f28332c466f 43 int TCPSocketServer::listen(int backlog)
Soohwan Kim 0:6f28332c466f 44 {
Soohwan Kim 0:6f28332c466f 45 if (_sock_fd < 0) {
Soohwan Kim 0:6f28332c466f 46 return -1;
Soohwan Kim 0:6f28332c466f 47 }
Soohwan Kim 0:6f28332c466f 48 if (backlog != 1) {
Soohwan Kim 0:6f28332c466f 49 return -1;
Soohwan Kim 0:6f28332c466f 50 }
Soohwan Kim 0:6f28332c466f 51 eth->scmd(_sock_fd, WIZnet_Chip::LISTEN);
Soohwan Kim 0:6f28332c466f 52 return 0;
Soohwan Kim 0:6f28332c466f 53 }
Soohwan Kim 0:6f28332c466f 54
Soohwan Kim 0:6f28332c466f 55
Soohwan Kim 0:6f28332c466f 56 int TCPSocketServer::accept(TCPSocketConnection& connection)
Soohwan Kim 0:6f28332c466f 57 {
Soohwan Kim 0:6f28332c466f 58 if (_sock_fd < 0) {
Soohwan Kim 0:6f28332c466f 59 return -1;
Soohwan Kim 0:6f28332c466f 60 }
Soohwan Kim 0:6f28332c466f 61 Timer t;
Soohwan Kim 0:6f28332c466f 62 t.reset();
Soohwan Kim 0:6f28332c466f 63 t.start();
Soohwan Kim 0:6f28332c466f 64 while(1) {
Soohwan Kim 0:6f28332c466f 65 if (t.read_ms() > _timeout && _blocking == false) {
Soohwan Kim 0:6f28332c466f 66 return -1;
Soohwan Kim 0:6f28332c466f 67 }
Soohwan Kim 0:6f28332c466f 68 if (eth->sreg<uint8_t>(_sock_fd, Sn_SR) == WIZnet_Chip::SOCK_ESTABLISHED) {
Soohwan Kim 0:6f28332c466f 69 break;
Soohwan Kim 0:6f28332c466f 70 }
Soohwan Kim 0:6f28332c466f 71 }
Soohwan Kim 0:6f28332c466f 72 uint32_t ip = eth->sreg<uint32_t>(_sock_fd, Sn_DIPR);
Soohwan Kim 0:6f28332c466f 73 char host[16];
Soohwan Kim 0:6f28332c466f 74 snprintf(host, sizeof(host), "%d.%d.%d.%d", (ip>>24)&0xff, (ip>>16)&0xff, (ip>>8)&0xff, ip&0xff);
Soohwan Kim 0:6f28332c466f 75 uint16_t port = eth->sreg<uint16_t>(_sock_fd, Sn_DPORT);
Soohwan Kim 0:6f28332c466f 76
Soohwan Kim 0:6f28332c466f 77 // change this server socket to connection socket.
Soohwan Kim 0:6f28332c466f 78 connection._sock_fd = _sock_fd;
Soohwan Kim 0:6f28332c466f 79 connection._is_connected = true;
Soohwan Kim 0:6f28332c466f 80 connection.set_address(host, port);
Soohwan Kim 0:6f28332c466f 81
Soohwan Kim 0:6f28332c466f 82 // and then, for the next connection, server socket should be assigned new one.
Soohwan Kim 0:6f28332c466f 83 _sock_fd = -1; // want to assign new available _sock_fd.
Soohwan Kim 0:6f28332c466f 84 if(bind(listen_port) < 0) {
Soohwan Kim 0:6f28332c466f 85 // modified by Patrick Pollet
Soohwan Kim 0:6f28332c466f 86 error("No more socket for listening, bind error");
Soohwan Kim 0:6f28332c466f 87 return -1;
Soohwan Kim 0:6f28332c466f 88 } else {
Soohwan Kim 0:6f28332c466f 89 //return -1;
Soohwan Kim 0:6f28332c466f 90 if(listen(1) < 0) {
Soohwan Kim 0:6f28332c466f 91 // modified by Patrick Pollet
Soohwan Kim 0:6f28332c466f 92 error("No more socket for listening, listen error");
Soohwan Kim 0:6f28332c466f 93 return -1;
Soohwan Kim 0:6f28332c466f 94 }
Soohwan Kim 0:6f28332c466f 95 }
Soohwan Kim 0:6f28332c466f 96
Soohwan Kim 0:6f28332c466f 97 return 0;
Soohwan Kim 0:6f28332c466f 98 }