소켓 프로그래밍 코드에서 오류 찾아주실 수 있으실까요??

         while(1){
                while(recv(client_socket, buff_rcv, sizeof(buff_rcv),0)<=0){
                        printf("no message recv\n");
                }
 
                if(!strncmp("bye\n", buff_rcv, 4)){
                        printf("exit chatting program\n");
                        close(client_socket);
                        break;
                }
                //recv msg from client
                printf("[server recv] : %s\n", buff_rcv);
 
                //send msg to client
                printf("[server send] : ");
                scanf("%[^\n]", buff_snd);
                getchar();
                send(client_socket, buff_snd,sizeof(buff_snd),0);
 
                }
        }

       while(1){
                printf("[client send] : ");
                scanf("%[^\n]", buff_snd);
                getchar();
                send(client_socket, buff_snd, sizeof(buff_snd),0);
 
                memset(buff_snd, 0, sizeof(buff_snd));
 
 
                while(recv(client_socket, buff_rcv, sizeof(buff_rcv),0)<0){
                      printf("no message recv\n");
                }
 
 
                printf("[client recv] : %s\n", buff_rcv);
                memset(buff_rcv,0, sizeof(buff_rcv));
      }