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/Endpoint.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 "Socket/Endpoint.h"
AdamGreen 0:3b00827bb0b7 20 #include <cstring>
AdamGreen 0:3b00827bb0b7 21 #include <cstdio>
AdamGreen 0:3b00827bb0b7 22
AdamGreen 0:3b00827bb0b7 23 Endpoint::Endpoint() {
AdamGreen 0:3b00827bb0b7 24 reset_address();
AdamGreen 0:3b00827bb0b7 25 }
AdamGreen 0:3b00827bb0b7 26 Endpoint::~Endpoint() {}
AdamGreen 0:3b00827bb0b7 27
AdamGreen 0:3b00827bb0b7 28 void Endpoint::reset_address(void) {
AdamGreen 0:3b00827bb0b7 29 std::memset(&_remoteHost, 0, sizeof(struct sockaddr_in));
AdamGreen 0:3b00827bb0b7 30 _ipAddress[0] = '\0';
AdamGreen 0:3b00827bb0b7 31 }
AdamGreen 0:3b00827bb0b7 32
AdamGreen 0:3b00827bb0b7 33 #include "stdio.h"
AdamGreen 0:3b00827bb0b7 34
AdamGreen 0:3b00827bb0b7 35 int Endpoint::set_address(const char* host, const int port) {
AdamGreen 0:3b00827bb0b7 36 reset_address();
AdamGreen 0:3b00827bb0b7 37
AdamGreen 0:3b00827bb0b7 38 // IP Address
AdamGreen 0:3b00827bb0b7 39 char address[5];
AdamGreen 0:3b00827bb0b7 40 char *p_address = address;
AdamGreen 0:3b00827bb0b7 41
AdamGreen 0:3b00827bb0b7 42 // Dot-decimal notation
AdamGreen 0:3b00827bb0b7 43 int result = std::sscanf(host, "%3u.%3u.%3u.%3u",
AdamGreen 0:3b00827bb0b7 44 (unsigned int*)&address[0], (unsigned int*)&address[1],
AdamGreen 0:3b00827bb0b7 45 (unsigned int*)&address[2], (unsigned int*)&address[3]);
AdamGreen 0:3b00827bb0b7 46
AdamGreen 0:3b00827bb0b7 47 if (result != 4) {
AdamGreen 0:3b00827bb0b7 48 // Resolve address with DNS
AdamGreen 0:3b00827bb0b7 49 struct hostent *host_address = lwip_gethostbyname(host);
AdamGreen 0:3b00827bb0b7 50 if (host_address == NULL)
AdamGreen 0:3b00827bb0b7 51 return -1; //Could not resolve address
AdamGreen 0:3b00827bb0b7 52 p_address = (char*)host_address->h_addr_list[0];
AdamGreen 0:3b00827bb0b7 53 }
AdamGreen 0:3b00827bb0b7 54 std::memcpy((char*)&_remoteHost.sin_addr.s_addr, p_address, 4);
AdamGreen 0:3b00827bb0b7 55
AdamGreen 0:3b00827bb0b7 56 // Address family
AdamGreen 0:3b00827bb0b7 57 _remoteHost.sin_family = AF_INET;
AdamGreen 0:3b00827bb0b7 58
AdamGreen 0:3b00827bb0b7 59 // Set port
AdamGreen 0:3b00827bb0b7 60 _remoteHost.sin_port = htons(port);
AdamGreen 0:3b00827bb0b7 61
AdamGreen 0:3b00827bb0b7 62 return 0;
AdamGreen 0:3b00827bb0b7 63 }
AdamGreen 0:3b00827bb0b7 64
AdamGreen 0:3b00827bb0b7 65 char* Endpoint::get_address() {
AdamGreen 0:3b00827bb0b7 66 if ((_ipAddress[0] == '\0') && (_remoteHost.sin_addr.s_addr != 0))
AdamGreen 0:3b00827bb0b7 67 inet_ntoa_r(_remoteHost.sin_addr, _ipAddress, sizeof(_ipAddress));
AdamGreen 0:3b00827bb0b7 68 return _ipAddress;
AdamGreen 0:3b00827bb0b7 69 }
AdamGreen 0:3b00827bb0b7 70
AdamGreen 0:3b00827bb0b7 71 int Endpoint::get_port() {
AdamGreen 0:3b00827bb0b7 72 return ntohs(_remoteHost.sin_port);
AdamGreen 0:3b00827bb0b7 73 }