mirror of https://github.com/ARMmbed/mbed-os.git
114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
/* Socket
|
|
* Copyright (c) 2015 ARM Limited
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "TCPServer.h"
|
|
#include "mbed.h"
|
|
|
|
TCPServer::TCPServer()
|
|
: _pending(0), _accept_sem(0)
|
|
{
|
|
}
|
|
|
|
TCPServer::~TCPServer()
|
|
{
|
|
close();
|
|
}
|
|
|
|
nsapi_protocol_t TCPServer::get_proto()
|
|
{
|
|
return NSAPI_TCP;
|
|
}
|
|
|
|
nsapi_error_t TCPServer::listen(int backlog)
|
|
{
|
|
_lock.lock();
|
|
nsapi_error_t ret;
|
|
|
|
if (!_socket) {
|
|
ret = NSAPI_ERROR_NO_SOCKET;
|
|
} else {
|
|
ret = _stack->socket_listen(_socket, backlog);
|
|
}
|
|
|
|
_lock.unlock();
|
|
return ret;
|
|
}
|
|
|
|
nsapi_error_t TCPServer::accept(TCPSocket *connection, SocketAddress *address)
|
|
{
|
|
_lock.lock();
|
|
nsapi_error_t ret;
|
|
|
|
while (true) {
|
|
if (!_socket) {
|
|
ret = NSAPI_ERROR_NO_SOCKET;
|
|
break;
|
|
}
|
|
|
|
_pending = 0;
|
|
void *socket;
|
|
ret = _stack->socket_accept(_socket, &socket, address);
|
|
|
|
if (0 == ret) {
|
|
connection->_lock.lock();
|
|
|
|
if (connection->_socket) {
|
|
connection->close();
|
|
}
|
|
|
|
connection->_stack = _stack;
|
|
connection->_socket = socket;
|
|
connection->_event = Callback<void()>(connection, &TCPSocket::event);
|
|
_stack->socket_attach(socket, &Callback<void()>::thunk, &connection->_event);
|
|
|
|
connection->_lock.unlock();
|
|
break;
|
|
} else if (NSAPI_ERROR_WOULD_BLOCK != ret) {
|
|
break;
|
|
} else {
|
|
int32_t count;
|
|
|
|
// Release lock before blocking so other threads
|
|
// accessing this object aren't blocked
|
|
_lock.unlock();
|
|
count = _accept_sem.wait(_timeout);
|
|
_lock.lock();
|
|
|
|
if (count < 1) {
|
|
// Semaphore wait timed out so break out and return
|
|
ret = NSAPI_ERROR_WOULD_BLOCK;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
_lock.unlock();
|
|
return ret;
|
|
}
|
|
|
|
void TCPServer::event()
|
|
{
|
|
int32_t acount = _accept_sem.wait(0);
|
|
if (acount <= 1) {
|
|
_accept_sem.release();
|
|
}
|
|
|
|
_pending += 1;
|
|
if (_callback && _pending == 1) {
|
|
_callback();
|
|
}
|
|
}
|