Socket::close() now supports an additional parameter for defining the shutdown type
Fork of Socket by
UDPSocket.cpp@3:e6474399e057, 2012-07-25 (annotated)
- Committer:
- emilmont
- Date:
- Wed Jul 25 14:59:37 2012 +0000
- Revision:
- 3:e6474399e057
- Parent:
- 2:b227d242f3c7
- Child:
- 5:300e7ad2dc1d
Split TCPSocketServer from TCPSocketConnection
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
donatien | 0:1f77255a22f5 | 1 | /* Copyright (C) 2012 mbed.org, MIT License |
donatien | 0:1f77255a22f5 | 2 | * |
donatien | 0:1f77255a22f5 | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
donatien | 0:1f77255a22f5 | 4 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
donatien | 0:1f77255a22f5 | 5 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
donatien | 0:1f77255a22f5 | 6 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
donatien | 0:1f77255a22f5 | 7 | * furnished to do so, subject to the following conditions: |
donatien | 0:1f77255a22f5 | 8 | * |
donatien | 0:1f77255a22f5 | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
donatien | 0:1f77255a22f5 | 10 | * substantial portions of the Software. |
donatien | 0:1f77255a22f5 | 11 | * |
donatien | 0:1f77255a22f5 | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
donatien | 0:1f77255a22f5 | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
donatien | 0:1f77255a22f5 | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
donatien | 0:1f77255a22f5 | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
donatien | 0:1f77255a22f5 | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
donatien | 0:1f77255a22f5 | 17 | */ |
donatien | 0:1f77255a22f5 | 18 | |
donatien | 0:1f77255a22f5 | 19 | #include "UDPSocket.h" |
donatien | 0:1f77255a22f5 | 20 | |
donatien | 0:1f77255a22f5 | 21 | #include <cstring> |
donatien | 0:1f77255a22f5 | 22 | |
donatien | 0:1f77255a22f5 | 23 | using std::memset; |
donatien | 0:1f77255a22f5 | 24 | |
emilmont | 3:e6474399e057 | 25 | UDPSocket::UDPSocket() { |
donatien | 0:1f77255a22f5 | 26 | } |
donatien | 0:1f77255a22f5 | 27 | |
emilmont | 3:e6474399e057 | 28 | // Server initialization |
emilmont | 3:e6474399e057 | 29 | int UDPSocket::bind(int port) { |
emilmont | 3:e6474399e057 | 30 | if (init(SOCK_DGRAM) < 0) |
emilmont | 3:e6474399e057 | 31 | return -1; |
emilmont | 3:e6474399e057 | 32 | |
emilmont | 3:e6474399e057 | 33 | struct sockaddr_in localHost; |
emilmont | 3:e6474399e057 | 34 | std::memset(&localHost, 0, sizeof(localHost)); |
emilmont | 3:e6474399e057 | 35 | |
emilmont | 3:e6474399e057 | 36 | localHost.sin_family = AF_INET; |
emilmont | 3:e6474399e057 | 37 | localHost.sin_port = htons(port); |
emilmont | 3:e6474399e057 | 38 | localHost.sin_addr.s_addr = INADDR_ANY; |
emilmont | 3:e6474399e057 | 39 | |
emilmont | 3:e6474399e057 | 40 | if (lwip_bind(_sock_fd, (const struct sockaddr *) &localHost, sizeof(localHost)) < 0) { |
emilmont | 3:e6474399e057 | 41 | close(); |
emilmont | 3:e6474399e057 | 42 | return -1; |
emilmont | 3:e6474399e057 | 43 | } |
emilmont | 3:e6474399e057 | 44 | |
emilmont | 3:e6474399e057 | 45 | return 0; |
donatien | 0:1f77255a22f5 | 46 | } |
donatien | 0:1f77255a22f5 | 47 | |
donatien | 0:1f77255a22f5 | 48 | // -1 if unsuccessful, else number of bytes written |
emilmont | 3:e6474399e057 | 49 | int UDPSocket::sendTo(char* data, int length, char* host, int port, int timeout) { |
emilmont | 3:e6474399e057 | 50 | if (_sock_fd < 0) |
emilmont | 3:e6474399e057 | 51 | return -1; |
emilmont | 3:e6474399e057 | 52 | |
emilmont | 3:e6474399e057 | 53 | struct sockaddr_in remoteHost; |
emilmont | 3:e6474399e057 | 54 | |
emilmont | 3:e6474399e057 | 55 | //Populate m_remoteHost |
emilmont | 3:e6474399e057 | 56 | std::memset(&remoteHost, 0, sizeof(struct sockaddr_in)); |
emilmont | 3:e6474399e057 | 57 | |
emilmont | 3:e6474399e057 | 58 | //Resolve DNS address or populate hard-coded IP address |
emilmont | 3:e6474399e057 | 59 | struct hostent *server = ::gethostbyname(host); |
emilmont | 3:e6474399e057 | 60 | if (server == NULL) { |
emilmont | 3:e6474399e057 | 61 | return -1; //Could not resolve address |
donatien | 0:1f77255a22f5 | 62 | } |
emilmont | 3:e6474399e057 | 63 | std::memcpy((char*) &remoteHost.sin_addr.s_addr, |
emilmont | 3:e6474399e057 | 64 | (char*) server->h_addr_list[0], server->h_length); |
emilmont | 3:e6474399e057 | 65 | |
emilmont | 3:e6474399e057 | 66 | remoteHost.sin_family = AF_INET; |
emilmont | 3:e6474399e057 | 67 | remoteHost.sin_port = htons(port); |
emilmont | 3:e6474399e057 | 68 | |
emilmont | 3:e6474399e057 | 69 | size_t writtenLen = 0; |
emilmont | 3:e6474399e057 | 70 | set_timeout(timeout); |
emilmont | 3:e6474399e057 | 71 | while (writtenLen < length) { |
emilmont | 3:e6474399e057 | 72 | //Wait for socket to be writeable |
emilmont | 3:e6474399e057 | 73 | //Creating FS set |
emilmont | 3:e6474399e057 | 74 | if (wait_writable() != 0) |
emilmont | 3:e6474399e057 | 75 | return writtenLen; //Timeout -- FIXME should we return -1 or writtenLength ? |
emilmont | 3:e6474399e057 | 76 | |
emilmont | 3:e6474399e057 | 77 | int ret = lwip_sendto(_sock_fd, data + writtenLen, length - writtenLen, 0, |
emilmont | 3:e6474399e057 | 78 | (const struct sockaddr *) &remoteHost, sizeof(remoteHost)); |
emilmont | 3:e6474399e057 | 79 | if (ret > 0) { |
emilmont | 3:e6474399e057 | 80 | writtenLen += ret; |
emilmont | 3:e6474399e057 | 81 | } else if (ret == 0) { |
emilmont | 3:e6474399e057 | 82 | return writtenLen; //Connection was closed by server -- FIXME how do we signal that the connection was closed ? |
emilmont | 3:e6474399e057 | 83 | } else { |
emilmont | 3:e6474399e057 | 84 | return -1; //Connnection error |
emilmont | 3:e6474399e057 | 85 | } |
donatien | 0:1f77255a22f5 | 86 | } |
emilmont | 3:e6474399e057 | 87 | |
emilmont | 3:e6474399e057 | 88 | return writtenLen; |
donatien | 0:1f77255a22f5 | 89 | } |
donatien | 0:1f77255a22f5 | 90 | |
donatien | 0:1f77255a22f5 | 91 | // -1 if unsuccessful, else number of bytes received |
emilmont | 3:e6474399e057 | 92 | int UDPSocket::receiveFrom(char* data, int length, char** host, int* port, int timeout) { |
emilmont | 3:e6474399e057 | 93 | if (_sock_fd < 0) |
emilmont | 3:e6474399e057 | 94 | return -1; |
emilmont | 3:e6474399e057 | 95 | |
emilmont | 3:e6474399e057 | 96 | set_timeout(timeout); |
emilmont | 3:e6474399e057 | 97 | if (wait_readable() != 0) |
emilmont | 3:e6474399e057 | 98 | return -1; |
emilmont | 3:e6474399e057 | 99 | |
emilmont | 3:e6474399e057 | 100 | struct sockaddr_in remoteHost; |
emilmont | 3:e6474399e057 | 101 | std::memset(&remoteHost, 0, sizeof(struct sockaddr_in)); |
donatien | 0:1f77255a22f5 | 102 | |
emilmont | 3:e6474399e057 | 103 | socklen_t remoteHostLen = sizeof(remoteHost); |
emilmont | 3:e6474399e057 | 104 | int n = lwip_recvfrom(_sock_fd, data, length, 0, (struct sockaddr*) &remoteHost, &remoteHostLen); |
emilmont | 3:e6474399e057 | 105 | if (n < 0) |
emilmont | 3:e6474399e057 | 106 | return -1; |
emilmont | 3:e6474399e057 | 107 | |
emilmont | 3:e6474399e057 | 108 | static char hostBuf[16]; |
emilmont | 3:e6474399e057 | 109 | inet_ntoa_r(remoteHost.sin_addr, hostBuf, sizeof(hostBuf)); |
emilmont | 3:e6474399e057 | 110 | |
emilmont | 3:e6474399e057 | 111 | *host = hostBuf; |
emilmont | 3:e6474399e057 | 112 | *port = ntohs(remoteHost.sin_port); |
emilmont | 3:e6474399e057 | 113 | |
emilmont | 3:e6474399e057 | 114 | return n; |
donatien | 0:1f77255a22f5 | 115 | } |
donatien | 0:1f77255a22f5 | 116 | |
emilmont | 3:e6474399e057 | 117 | UDPSocket::~UDPSocket() { |
emilmont | 3:e6474399e057 | 118 | close(); //Don't want to leak |
donatien | 0:1f77255a22f5 | 119 | } |