Socket.cpp

00001 /* Socket
00002  * Copyright (c) 2015 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 #include "Socket.h"
00018 #include "mbed.h"
00019 
00020 Socket::Socket()
00021     : _stack(0)
00022     , _socket(0)
00023     , _timeout(osWaitForever)
00024 {
00025 }
00026 
00027 nsapi_error_t Socket::open(NetworkStack *stack)
00028 {
00029     _lock.lock();
00030 
00031     if (_stack != NULL || stack == NULL) {
00032         _lock.unlock();
00033         return NSAPI_ERROR_PARAMETER ;
00034     }
00035     _stack = stack;
00036 
00037     nsapi_socket_t socket;
00038     nsapi_error_t err = _stack->socket_open(&socket, get_proto());
00039     if (err) {
00040         _lock.unlock();
00041         return err;
00042     }
00043 
00044     _socket = socket;
00045     _event.attach(this, &Socket::event);
00046     _stack->socket_attach(_socket, Callback<void()>::thunk, &_event);
00047 
00048     _lock.unlock();
00049     return NSAPI_ERROR_OK ;
00050 }
00051 
00052 nsapi_error_t Socket::close()
00053 {
00054     _lock.lock();
00055 
00056     nsapi_error_t ret = NSAPI_ERROR_OK ;
00057     if (_socket) {
00058         _stack->socket_attach(_socket, 0, 0);
00059         nsapi_socket_t socket = _socket;
00060         _socket = 0;
00061         ret = _stack->socket_close(socket);
00062     }
00063     _stack = 0;
00064 
00065     // Wakeup anything in a blocking operation
00066     // on this socket
00067     event();
00068 
00069     _lock.unlock();
00070     return ret;
00071 }
00072 
00073 nsapi_error_t Socket::bind(uint16_t port)
00074 {
00075     // Underlying bind is thread safe
00076     SocketAddress addr(0, port);
00077     return bind(addr);
00078 }
00079 
00080 nsapi_error_t Socket::bind(const char *address, uint16_t port)
00081 {
00082     // Underlying bind is thread safe
00083     SocketAddress addr(address, port);
00084     return bind(addr);
00085 }
00086 
00087 nsapi_error_t Socket::bind(const SocketAddress &address)
00088 {
00089     _lock.lock();
00090     nsapi_error_t ret;
00091 
00092     if (!_socket) {
00093         ret = NSAPI_ERROR_NO_SOCKET ;
00094     } else {
00095         ret = _stack->socket_bind(_socket, address);
00096     }
00097 
00098     _lock.unlock();
00099     return ret;
00100 }
00101 
00102 void Socket::set_blocking(bool blocking)
00103 {
00104     // Socket::set_timeout is thread safe
00105     set_timeout(blocking ? -1 : 0);
00106 }
00107 
00108 void Socket::set_timeout(int timeout)
00109 {
00110     _lock.lock();
00111 
00112     if (timeout >= 0) {
00113         _timeout = (uint32_t)timeout;
00114     } else {
00115         _timeout = osWaitForever;
00116     }
00117 
00118     _lock.unlock();
00119 }
00120 
00121 nsapi_error_t Socket::setsockopt(int level, int optname, const void *optval, unsigned optlen)
00122 {
00123     _lock.lock();
00124     nsapi_error_t ret;
00125 
00126     if (!_socket) {
00127         ret = NSAPI_ERROR_NO_SOCKET ;
00128     } else {
00129         ret = _stack->setsockopt(_socket, level, optname, optval, optlen);
00130     }
00131 
00132     _lock.unlock();
00133     return ret;
00134 }
00135 
00136 nsapi_error_t Socket::getsockopt(int level, int optname, void *optval, unsigned *optlen)
00137 {
00138     _lock.lock();
00139     nsapi_error_t ret;
00140 
00141     if (!_socket) {
00142         ret = NSAPI_ERROR_NO_SOCKET ;
00143     } else {
00144         ret = _stack->getsockopt(_socket, level, optname, optval, optlen);
00145     }
00146 
00147     _lock.unlock();
00148     return ret;
00149 
00150 }
00151 
00152 void Socket::attach(Callback<void()> callback)
00153 {
00154     _lock.lock();
00155 
00156     _callback = callback;
00157 
00158     _lock.unlock();
00159 }