Paul Staron / W5500-Interface

Fork of original library, increased Tx buffer to 16kB

Dependents:   W5500-SNTPClient-example

Socket/TCPSocketServer.cpp@0:e9275bdfa393, 2019-05-02 (annotated)

Committer:
star297
Date:
Thu May 02 20:47:25 2019 +0000
Revision:
0:e9275bdfa393
First commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
star297 0:e9275bdfa393 1 /* Copyright (C) 2012 mbed.org, MIT License
star297 0:e9275bdfa393 2 *
star297 0:e9275bdfa393 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
star297 0:e9275bdfa393 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
star297 0:e9275bdfa393 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
star297 0:e9275bdfa393 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
star297 0:e9275bdfa393 7 * furnished to do so, subject to the following conditions:
star297 0:e9275bdfa393 8 *
star297 0:e9275bdfa393 9 * The above copyright notice and this permission notice shall be included in all copies or
star297 0:e9275bdfa393 10 * substantial portions of the Software.
star297 0:e9275bdfa393 11 *
star297 0:e9275bdfa393 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
star297 0:e9275bdfa393 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
star297 0:e9275bdfa393 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
star297 0:e9275bdfa393 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
star297 0:e9275bdfa393 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
star297 0:e9275bdfa393 17 */
star297 0:e9275bdfa393 18
star297 0:e9275bdfa393 19 #include "TCPSocketServer.h"
star297 0:e9275bdfa393 20
star297 0:e9275bdfa393 21 TCPSocketServer::TCPSocketServer() {}
star297 0:e9275bdfa393 22
star297 0:e9275bdfa393 23 // Server initialization
star297 0:e9275bdfa393 24 int TCPSocketServer::bind(int port)
star297 0:e9275bdfa393 25 {
star297 0:e9275bdfa393 26 listen_port = port;
star297 0:e9275bdfa393 27 if (_sock_fd < 0) {
star297 0:e9275bdfa393 28 _sock_fd = eth->new_socket();
star297 0:e9275bdfa393 29 if (_sock_fd < 0) {
star297 0:e9275bdfa393 30 return -1;
star297 0:e9275bdfa393 31 }
star297 0:e9275bdfa393 32 }
star297 0:e9275bdfa393 33 // set TCP protocol
star297 0:e9275bdfa393 34 eth->setProtocol(_sock_fd, WIZnet_Chip::TCP);
star297 0:e9275bdfa393 35 // set local port
star297 0:e9275bdfa393 36 eth->sreg<uint16_t>(_sock_fd, Sn_PORT, port);
star297 0:e9275bdfa393 37 // connect the network
star297 0:e9275bdfa393 38 eth->scmd(_sock_fd, WIZnet_Chip::OPEN);
star297 0:e9275bdfa393 39 return 0;
star297 0:e9275bdfa393 40 }
star297 0:e9275bdfa393 41
star297 0:e9275bdfa393 42 int TCPSocketServer::listen(int backlog)
star297 0:e9275bdfa393 43 {
star297 0:e9275bdfa393 44 if (_sock_fd < 0) {
star297 0:e9275bdfa393 45 return -1;
star297 0:e9275bdfa393 46 }
star297 0:e9275bdfa393 47 if (backlog != 1) {
star297 0:e9275bdfa393 48 return -1;
star297 0:e9275bdfa393 49 }
star297 0:e9275bdfa393 50 eth->scmd(_sock_fd, WIZnet_Chip::LISTEN);
star297 0:e9275bdfa393 51 return 0;
star297 0:e9275bdfa393 52 }
star297 0:e9275bdfa393 53
star297 0:e9275bdfa393 54
star297 0:e9275bdfa393 55 int TCPSocketServer::accept(TCPSocketConnection& connection)
star297 0:e9275bdfa393 56 {
star297 0:e9275bdfa393 57 if (_sock_fd < 0) {
star297 0:e9275bdfa393 58 return -1;
star297 0:e9275bdfa393 59 }
star297 0:e9275bdfa393 60 Timer t;
star297 0:e9275bdfa393 61 t.reset();
star297 0:e9275bdfa393 62 t.start();
star297 0:e9275bdfa393 63 while(1) {
star297 0:e9275bdfa393 64 if (t.read_ms() > _timeout && _blocking == false) {
star297 0:e9275bdfa393 65 return -1;
star297 0:e9275bdfa393 66 }
star297 0:e9275bdfa393 67 if (eth->sreg<uint8_t>(_sock_fd, Sn_SR) == WIZnet_Chip::SOCK_ESTABLISHED) {
star297 0:e9275bdfa393 68 break;
star297 0:e9275bdfa393 69 }
star297 0:e9275bdfa393 70 }
star297 0:e9275bdfa393 71 uint32_t ip = eth->sreg<uint32_t>(_sock_fd, Sn_DIPR);
star297 0:e9275bdfa393 72 char host[16];
star297 0:e9275bdfa393 73 snprintf(host, sizeof(host), "%d.%d.%d.%d", (ip>>24)&0xff, (ip>>16)&0xff, (ip>>8)&0xff, ip&0xff);
star297 0:e9275bdfa393 74 uint16_t port = eth->sreg<uint16_t>(_sock_fd, Sn_DPORT);
star297 0:e9275bdfa393 75
star297 0:e9275bdfa393 76 // change this server socket to connection socket.
star297 0:e9275bdfa393 77 connection._sock_fd = _sock_fd;
star297 0:e9275bdfa393 78 connection._is_connected = true;
star297 0:e9275bdfa393 79 connection.set_address(host, port);
star297 0:e9275bdfa393 80
star297 0:e9275bdfa393 81 // and then, for the next connection, server socket should be assigned new one.
star297 0:e9275bdfa393 82 _sock_fd = -1; // want to assign new available _sock_fd.
star297 0:e9275bdfa393 83 if(bind(listen_port) < 0) {
star297 0:e9275bdfa393 84 // modified by Patrick Pollet
star297 0:e9275bdfa393 85 error("No more socket for listening, bind error");
star297 0:e9275bdfa393 86 return -1;
star297 0:e9275bdfa393 87 } else {
star297 0:e9275bdfa393 88 //return -1;
star297 0:e9275bdfa393 89 if(listen(1) < 0) {
star297 0:e9275bdfa393 90 // modified by Patrick Pollet
star297 0:e9275bdfa393 91 error("No more socket for listening, listen error");
star297 0:e9275bdfa393 92 return -1;
star297 0:e9275bdfa393 93 }
star297 0:e9275bdfa393 94 }
star297 0:e9275bdfa393 95 return 0;
star297 0:e9275bdfa393 96 }