Thread: chat server error

hi,
i am making a chat server....but the problem is only one way chat occurs....the connection gets lost on the client side....cud u plz let me know where i am going wrong
thanks in advance

Code:

///   CLIENT   


int main(int argc, char *argv[])
{
	printf("This is the client program\n");

	int sockfd;
	int len, rc ;
	int result;
	struct sockaddr_in address;
        char arr[]={'\0'};
printf("enter the string\n");
gets(arr);

int i;
int length=strlen(arr);
printf("len of the arr is %d\n", length);

  

   //Create socket for client.
	sockfd = socket(AF_INET, SOCK_STREAM, 0);
	if (sockfd == -1) { 
		perror("Socket create failed.\n") ; 
		return -1 ; 
	} 
	
	//Name the socket as agreed with server.
	address.sin_family = AF_INET;
	address.sin_addr.s_addr = inet_addr("127.0.0.1");
	address.sin_port = htons(7764);
	len = sizeof(address);

	result = connect(sockfd, (struct sockaddr *)&address, len);
	if(result == -1)
	{
		perror("Error has occurred");
		exit(-1);
	}

	
		//Read and write via sockfd
		rc = write(sockfd, &length, 20);
		printf("write rc = %d\n", rc ) ; 
		if (rc == -1) 
return -1; 
		
		read(sockfd, &length, 20);
		printf("Char from server = %c\n", arr);
		//if (ch == 'A') sleep(5) ;  // pause 5 seconds 
	
	close(sockfd);

	exit(0);
}


// SERVER

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <sys/un.h>

int main()
{
 printf("This is the server program\n");
//naming variables
 int server_sockfd, client_sockfd;
int server_len, client_len;
struct sockaddr_in  server_address;
struct sockaddr_in  client_address;
char ch='B';
int result;
int res;
int rc;
// removing old sockets
unlink("server_socket");
server_sockfd=socket(AF_INET,SOCK_STREAM,0);
if (server_sockfd == -1) { 
		perror("Socket create failed.\n") ; 
		return -1 ; 
	} 
//naming of socket
server_address.sin_family = AF_INET;
	server_address.sin_addr.s_addr = inet_addr("127.0.0.1");
	server_address.sin_port = htons(7764);
	server_len = sizeof(server_address);

	result = bind(server_sockfd, (struct sockaddr *)&server_address,server_len);
	if(result == -1)
	{
		perror("Error has occurred");
		exit(-1);
	}
res=listen(server_sockfd, 5);
if(res==-1)
{
perror("error");
exit(-1);
}
client_sockfd=accept(server_sockfd,(struct sockaddr *)&client_address,client_len);


read(client_sockfd,&ch,1);
ch++;
while ( ch < 'z') {

		//Read and write via sockfd
		rc = read(client_sockfd, &ch, 1);
		printf("write rc\n", rc ) ; 
		if (rc == -1) break ; 
		
		write(client_sockfd, &ch, 1);
		printf("Char from server = %c\n", ch);
		
	} 
	close(client_sockfd);

	exit(0);
}

Code:

    int length=strlen(arr);
...
...
    //Read and write via sockfd
    rc = write(sockfd, &length, 20);
    printf("write rc = %d\n", rc ) ; 
    if (rc == -1) 
        return -1; 
		
    read(sockfd, &length, 20);
    printf("Char from server = %c\n", arr);
    //if (ch == 'A') sleep(5) ;  // pause 5 seconds

What documentation are you reading as far as the parameters for read/write?

Normally the second parameter takes the buffer being written:

ssize_t read(int fd, void *buf, size_t count);
ssize_t write(int fd, const void *buf, size_t count);

You are passing the address of an integer as your buffer?

This occurs both in server and client btw...so amazed you got any text(legible) transmitted whatsoever..