Adam Green / EthernetInterface

Deprecated fork of old network stack source from github. Please use official library instead: https://mbed.org/users/mbed_official/code/EthernetInterface/

Socket/Socket.cpp@1:eadc868c2acf, 2013-10-26 (annotated)

Committer:
AdamGreen
Date:
Sat Oct 26 08:51:36 2013 +0000
Revision:
1:eadc868c2acf
Parent:
0:3b00827bb0b7 
Fix TCP checksum bug and stranded large TCP segments.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AdamGreen 0:3b00827bb0b7 1 /* Copyright (C) 2012 mbed.org, MIT License
AdamGreen 0:3b00827bb0b7 2 *
AdamGreen 0:3b00827bb0b7 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
AdamGreen 0:3b00827bb0b7 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
AdamGreen 0:3b00827bb0b7 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
AdamGreen 0:3b00827bb0b7 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
AdamGreen 0:3b00827bb0b7 7 * furnished to do so, subject to the following conditions:
AdamGreen 0:3b00827bb0b7 8 *
AdamGreen 0:3b00827bb0b7 9 * The above copyright notice and this permission notice shall be included in all copies or
AdamGreen 0:3b00827bb0b7 10 * substantial portions of the Software.
AdamGreen 0:3b00827bb0b7 11 *
AdamGreen 0:3b00827bb0b7 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
AdamGreen 0:3b00827bb0b7 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
AdamGreen 0:3b00827bb0b7 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
AdamGreen 0:3b00827bb0b7 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
AdamGreen 0:3b00827bb0b7 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
AdamGreen 0:3b00827bb0b7 17 */
AdamGreen 0:3b00827bb0b7 18 #include "Socket/Socket.h"
AdamGreen 0:3b00827bb0b7 19 #include <cstring>
AdamGreen 0:3b00827bb0b7 20
AdamGreen 0:3b00827bb0b7 21 using std::memset;
AdamGreen 0:3b00827bb0b7 22
AdamGreen 0:3b00827bb0b7 23 Socket::Socket() : _sock_fd(-1), _blocking(true), _timeout(1500) {
AdamGreen 0:3b00827bb0b7 24
AdamGreen 0:3b00827bb0b7 25 }
AdamGreen 0:3b00827bb0b7 26
AdamGreen 0:3b00827bb0b7 27 void Socket::set_blocking(bool blocking, unsigned int timeout) {
AdamGreen 0:3b00827bb0b7 28 _blocking = blocking;
AdamGreen 0:3b00827bb0b7 29 _timeout = timeout;
AdamGreen 0:3b00827bb0b7 30 }
AdamGreen 0:3b00827bb0b7 31
AdamGreen 0:3b00827bb0b7 32 int Socket::init_socket(int type) {
AdamGreen 0:3b00827bb0b7 33 if (_sock_fd != -1)
AdamGreen 0:3b00827bb0b7 34 return -1;
AdamGreen 0:3b00827bb0b7 35
AdamGreen 0:3b00827bb0b7 36 int fd = lwip_socket(AF_INET, type, 0);
AdamGreen 0:3b00827bb0b7 37 if (fd < 0)
AdamGreen 0:3b00827bb0b7 38 return -1;
AdamGreen 0:3b00827bb0b7 39
AdamGreen 0:3b00827bb0b7 40 _sock_fd = fd;
AdamGreen 0:3b00827bb0b7 41 return 0;
AdamGreen 0:3b00827bb0b7 42 }
AdamGreen 0:3b00827bb0b7 43
AdamGreen 0:3b00827bb0b7 44 int Socket::set_option(int level, int optname, const void *optval, socklen_t optlen) {
AdamGreen 0:3b00827bb0b7 45 return lwip_setsockopt(_sock_fd, level, optname, optval, optlen);
AdamGreen 0:3b00827bb0b7 46 }
AdamGreen 0:3b00827bb0b7 47
AdamGreen 0:3b00827bb0b7 48 int Socket::get_option(int level, int optname, void *optval, socklen_t *optlen) {
AdamGreen 0:3b00827bb0b7 49 return lwip_getsockopt(_sock_fd, level, optname, optval, optlen);
AdamGreen 0:3b00827bb0b7 50 }
AdamGreen 0:3b00827bb0b7 51
AdamGreen 0:3b00827bb0b7 52 int Socket::select(struct timeval *timeout, bool read, bool write) {
AdamGreen 0:3b00827bb0b7 53 fd_set fdSet;
AdamGreen 0:3b00827bb0b7 54 FD_ZERO(&fdSet);
AdamGreen 0:3b00827bb0b7 55 FD_SET(_sock_fd, &fdSet);
AdamGreen 0:3b00827bb0b7 56
AdamGreen 0:3b00827bb0b7 57 fd_set* readset = (read ) ? (&fdSet) : (NULL);
AdamGreen 0:3b00827bb0b7 58 fd_set* writeset = (write) ? (&fdSet) : (NULL);
AdamGreen 0:3b00827bb0b7 59
AdamGreen 0:3b00827bb0b7 60 int ret = lwip_select(FD_SETSIZE, readset, writeset, NULL, timeout);
AdamGreen 0:3b00827bb0b7 61 return (ret <= 0 || !FD_ISSET(_sock_fd, &fdSet)) ? (-1) : (0);
AdamGreen 0:3b00827bb0b7 62 }
AdamGreen 0:3b00827bb0b7 63
AdamGreen 0:3b00827bb0b7 64 int Socket::wait_readable(TimeInterval& timeout) {
AdamGreen 0:3b00827bb0b7 65 return select(&timeout._time, true, false);
AdamGreen 0:3b00827bb0b7 66 }
AdamGreen 0:3b00827bb0b7 67
AdamGreen 0:3b00827bb0b7 68 int Socket::wait_writable(TimeInterval& timeout) {
AdamGreen 0:3b00827bb0b7 69 return select(&timeout._time, false, true);
AdamGreen 0:3b00827bb0b7 70 }
AdamGreen 0:3b00827bb0b7 71
AdamGreen 0:3b00827bb0b7 72 int Socket::close(bool shutdown) {
AdamGreen 0:3b00827bb0b7 73 if (_sock_fd < 0)
AdamGreen 0:3b00827bb0b7 74 return -1;
AdamGreen 0:3b00827bb0b7 75
AdamGreen 0:3b00827bb0b7 76 if (shutdown)
AdamGreen 0:3b00827bb0b7 77 lwip_shutdown(_sock_fd, SHUT_RDWR);
AdamGreen 0:3b00827bb0b7 78 lwip_close(_sock_fd);
AdamGreen 0:3b00827bb0b7 79 _sock_fd = -1;
AdamGreen 0:3b00827bb0b7 80
AdamGreen 0:3b00827bb0b7 81 return 0;
AdamGreen 0:3b00827bb0b7 82 }
AdamGreen 0:3b00827bb0b7 83
AdamGreen 0:3b00827bb0b7 84 Socket::~Socket() {
AdamGreen 0:3b00827bb0b7 85 close(); //Don't want to leak
AdamGreen 0:3b00827bb0b7 86 }
AdamGreen 0:3b00827bb0b7 87
AdamGreen 0:3b00827bb0b7 88 TimeInterval::TimeInterval(unsigned int ms) {
AdamGreen 0:3b00827bb0b7 89 _time.tv_sec = ms / 1000;
AdamGreen 0:3b00827bb0b7 90 _time.tv_usec = (ms - (_time.tv_sec * 1000)) * 1000;
AdamGreen 0:3b00827bb0b7 91 }