Hi there, i saw the other thread about this error here and since his correctiong didnt fix mine i thought i'd be ok to create a new one about it.
Im quite new to C/C++ Coding so i hope you'll be kind and explain things in details.
my errors:
1. :initializing argument 6 of ‘ssize_t recvfrom(int, void*, size_t, int, sockaddr*, socklen_t*)’ receiver.cpp mlt_r line 70 C/C++ Problem
2. :invalid conversion from ‘int*’ to ‘socklen_t*’ receiver.cpp mlt_r line 70 C/C++ Problem
[B"]3." :[/B] make: *** [receiver.o] Error 1 mlt_r line 0 C/C++ Problem
Here is my code:
Im quite new to C/C++ Coding so i hope you'll be kind and explain things in details.
my errors:
1. :initializing argument 6 of ‘ssize_t recvfrom(int, void*, size_t, int, sockaddr*, socklen_t*)’ receiver.cpp mlt_r line 70 C/C++ Problem
2. :invalid conversion from ‘int*’ to ‘socklen_t*’ receiver.cpp mlt_r line 70 C/C++ Problem
[B"]3." :[/B] make: *** [receiver.o] Error 1 mlt_r line 0 C/C++ Problem
Here is my code:
Code:
#include <limits.h>
#include <netdb.h>
#include <iostream>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <signal.h>
#include <unistd.h>
#include <sys/un.h>
#include <arpa/inet.h>
#define HELLO_PORT 51075
#define HELLO_GROUP "localhost"
#define MSGBUFSIZE 256
typedef int socklen_t; //added to try after reading the other thread on this forum
main(int argc, char *argv[])
{
struct sockaddr_in addr;
int fd, nbytes,addrlen;
struct ip_mreq mreq;
char msgbuf[MSGBUFSIZE];
/* create what looks like an ordinary UDP socket */
if ((fd=socket(AF_INET,SOCK_DGRAM,0)) < 0) {
perror("socket");
exit(1);
}
/* set up destination address */
memset(&addr,0,sizeof(addr));
addr.sin_family=AF_INET;
addr.sin_addr.s_addr=htonl(INADDR_ANY); /* N.B.: differs from sender */
addr.sin_port=htons(HELLO_PORT);
/* bind to receive address */
if (bind(fd,(struct sockaddr *) &addr,sizeof(addr)) < 0) {
perror("bind");
exit(1);
}
/* use setsockopt() to request that the kernel join a multicast group */
mreq.imr_multiaddr.s_addr=inet_addr(HELLO_GROUP);
mreq.imr_interface.s_addr=htonl(INADDR_ANY);
if (setsockopt(fd,IPPROTO_IP,IP_ADD_MEMBERSHIP,&mreq,sizeof(mreq)) < 0) {
perror("setsockopt");
exit(1);
}
/* now just enter a read-print loop */
while (1) {
addrlen=sizeof(addr);
if ((nbytes=recvfrom(fd,msgbuf,MSGBUFSIZE,0,
(struct sockaddr *) &addr, &addrlen)) < 0) {
perror("recvfrom");
exit(1);
}
printf("Received: %s nbytes: %d \n",msgbuf, nbytes);
}
}