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UDPSocket.cpp
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UDPSocket.cpp
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#include "UDPSocket.h"
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
UDPSocket::UDPSocket() {
socket = ::socket(AF_INET, SOCK_DGRAM, 0);
if (socket < 0) {
printf("Error opening socket\n");
exit(1);
}
FD_ZERO(&fdset);
checkDelay.tv_sec = 0;
checkDelay.tv_usec = 0;
}
UDPSocket::~UDPSocket() {
::close(socket);
}
void UDPSocket::bind(uint16 port) {
SocketAddress addr;
bzero(&addr, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = INADDR_ANY;
addr.sin_port = htons(port);
if (::bind(socket, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
printf("Error binding socket address\n");
exit(1);
}
}
bool UDPSocket::send(const void* data, uint32 size, SocketAddress to) {
return ::sendto(socket, data, size, 0, (const struct sockaddr*)&to, sizeof(struct sockaddr_in)) >= 0;
}
bool UDPSocket::receive(void* data, uint32 maxSize, SocketAddress* from) {
socklen_t fromlen = sizeof(struct sockaddr_in);
struct sockaddr_in _from;
int32 res = ::recvfrom(socket, data, maxSize, 0, (struct sockaddr*)&_from, &fromlen);
if (from)
*from = _from;
return res >= 0;
}
bool UDPSocket::isDataAvailable() {
FD_SET(socket, &fdset);
int retval = select(4, &fdset, NULL, NULL, &checkDelay);
if (retval < 0) {
printf("Error select\n");
return false;
}else
return FD_ISSET(socket, &fdset);
}
bool UDPSocket::isNonBlockingEnabled() {
int opts = fcntl(socket, F_GETFL);
if (opts < 0) {
printf("Error fcntl\n");
exit(1);
}
return opts & O_NONBLOCK;
}
void UDPSocket::setNonBlockingEnabled(bool value) {
int opts = fcntl(socket, F_GETFL);
if (opts < 0) {
printf("Error fcntl\n");
exit(1);
}
if (value)
opts |= O_NONBLOCK;
else
opts &= ~O_NONBLOCK;
fcntl(socket, F_SETFL, opts);
}