리눅스 이클립스에서 소켓프로그래밍에러

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <arpa/inet.h>
 
#define MAXBUF  256
#define TRUE 1
 
 
int main()
{
   int ssock, csock;    
   int clen;
 
 
   struct sockaddr_in client_addr, server_addr;  
   char buf[MAXBUF] ={0,};   
 
 
 
   if ((ssock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP))< 0) {
      perror("socket error : ");
      exit(1);
   }
clen = sizeof(client_addr);
int optvalue=TRUE;
int optlen=sizeof(optvalue);
 setsockopt(ssock, SOL_SOCKET, SO_REUSEADDR, &optvalue, optlen);
 
 
 
   memset(&server_addr, 0, sizeof(server_addr));
   server_addr.sin_family  = AF_INET;
   server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
   server_addr.sin_port    = htons(3317);     
 
 
   if (bind(ssock, (struct sockaddr *)&server_addr, sizeof(server_addr)) <0) {
      perror("bind error : ");
      exit(1);
   }
 
 
   if (listen(ssock, 8) < 0) {
      perror("listen error : ");
      exit(1);
   }
 
 
csock = accept(ssock, (struct sockaddr *)&client_addr, &clen);
printf("접속성공!\n");
 
  while(1) {
 
 
    printf("보낼메세지:");
    gets(buf);
    if(!strcmp(buf,"exit"))
               {
                      break;
               }
     if (write(ssock, buf, MAXBUF) <0)
         perror("write error : ");
 
 if (read(csock, buf, MAXBUF) < 0) {
      perror("read error : ");
      exit(1);
   }
    printf("받은데이터:%s\n",buf);
 
   }
close(csock);
   return 0;
}