Threading Segmentation fault

[mindworks]

Hello all,

I am trying to run the following datagram server program with threading. But I am getting segmentation fault after the following line:

if((n= recvfrom(rec, buf, 1024, 0, (struct sockaddr *)&from_addr, &Size)) < 0)

Would be glad if anyone can make out where I am doing wrong.

Thanks all in advance!

[CODE]
Following is the code:
#include<sys/socket.h>
#include<sys/types.h>
#include<netinet/in.h>
#include<netdb.h>
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>
#include<errno.h>
#include<pthread.h>

void *Recv_Handle(void *);

int main(int argc, char *argv[])
{
	int length;
	pthread_t thread;
	struct sockaddr_in receive_addr, send_addr, addr;
	int sendSOCKET, receiveSOCKET;
	int rc;
	printf("hey1");
	//receiving stuff
	if((receiveSOCKET = socket(AF_INET, SOCK_DGRAM, 0))<0)
	{
		error("Socket");
		exit(1);
	}
	printf("hello2");

	receive_addr.sin_family = AF_INET;
	receive_addr.sin_port = htons(5000);
	receive_addr.sin_addr.s_addr = INADDR_ANY;// local ip address
	bzero(&receive_addr, length);
	printf("hello 3");

	length = sizeof(receive_addr);
	if((bind(receiveSOCKET, (struct sockaddr *)&receive_addr, length)) <0)
	{
		error("unable to bind");
		exit(1);
	}
	//creat6e a thread to handle the receiving stufff
	rc = pthread_create(&thread, NULL, Recv_Handle, (void *)&receiveSOCKET);
	printf("hello3");	
		
close(receiveSOCKET);
pthread_exit(NULL);
}

void *Recv_Handle(void *received)
{
	int rec;
	int n;
	char buf[1024];
	printf("hello 4");	
	rec = *(int *)received;
	struct sockaddr_in from_addr;
	int Size;
	printf("hello 6");
	while(1)
	{
		Size = sizeof(from_addr);
		printf("hello 7");
		if((n= recvfrom(rec, buf, 1024, 0, (struct sockaddr *)&from_addr, &Size)) < 0)
		{
			error("recvfrom");
			exit(1);
		}
		printf("hello 8");
		if((n = sendto(rec, "got ur message\n", 17, 0, (struct sockaddr *)&from_addr, sizeof(struct sockaddr))) <0)
		{
		
		error("sendto");
		exit(1);
		}
	printf("hello 9");
	}
	pthread_exit(NULL);
}

}[/CODE]

[mindworks]

Thanku for replying, bt. now it is giving following error in the same statement when compiled:

error: cannot convert to a pointer type.

[praveen_kumar]

true .. it was my mistake

[praveen_kumar]

bzero(&receive_addr, length);

length ??? Please initialize the variable. I this this might have cause the prob

[mindworks]

Hey thanks a lott Parveen for replying.

Bt. I did declare length, bt. the problem in the code was that the calling thread was exiting and with the that the thread I spawned was exiting as well.
So used pthread_join and it is working fine now.

Thanks for replying

[praveen_kumar]

oh ... true.. thanks to u too