udp_socket.c
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/**
* \file
*
* \author Georg Hopp
*
* \copyright
* Copyright © 2014 Georg Hopp
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include "tr/socket.h"
#include "tr/interface/socket.h"
#include "tr/logger.h"
#include "trbase.h"
static
int
udpSocketCtor(void * _this, va_list * params)
{
TR_Socket this = _this;
TR_PARENTCALL(TR_UdpSocket, _this, TR_Class, ctor, params);
this->type = SOCK_DGRAM;
return 0;
}
static
TR_RemoteData
udpSocketRecv(TR_Socket this, size_t size)
{
ssize_t received;
TR_RemoteData rdata;
TR_Socket remote = TR_new(TR_UdpSocket, this->log, NULL, 0, 0);
size = size>TR_UDP_MAX_READ_BLOCK ? TR_UDP_MAX_READ_BLOCK : size;
unsigned char buffer[size];
remote->addrlen = this->addrlen;
received = recvfrom(
this->handle,
buffer,
size,
this->flags,
&(remote->addr.info),
&remote->addrlen);
if (-1 == received) {
TR_delete(remote);
rdata = NULL;
} else {
rdata = TR_new(TR_RemoteData, buffer, received, remote);
}
return rdata;
}
static
ssize_t
udpSocketSend(TR_Socket this, TR_RemoteData data)
{
ssize_t send;
send = sendto(
this->handle,
((TR_SizedData)data)->data,
((TR_SizedData)data)->size,
this->flags,
&(data->remote->addr.info),
data->remote->addrlen);
if (-1 == send) {
perror("sendto");
}
return send;
}
TR_INIT_IFACE(TR_Class, udpSocketCtor, NULL, NULL);
TR_INIT_IFACE(TR_Socket, NULL, NULL, udpSocketRecv, udpSocketSend);
TR_CREATE_CLASS(
TR_UdpSocket,
TR_Socket,
NULL,
TR_IF(TR_Class),
TR_IF(TR_Socket));
// vim: set ts=4 sw=4: