dasserver

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

void error(const char *msg)
{
    perror(msg);
    exit(0);
}

//initialize file pointer
FILE *ptr_myfile;
int counter;

int main(int argc, char *argv[])
{
     while (1) {
    int sockfd, portno, n;
    struct sockaddr_in serv_addr;
    struct hostent *server;

    char buffer[256];
    if (argc < 3) {
       fprintf(stderr,"usage %s hostname port\n", argv[0]);
       exit(0);
    }
    portno = atoi(argv[2]);
    sockfd = socket(AF_INET, SOCK_STREAM, 0);
    if (sockfd < 0)
        error("ERROR opening socket");
    server = gethostbyname(argv[1]);
    if (server == NULL) {
        fprintf(stderr,"ERROR, no such host\n");
        exit(0);
    }
    bzero((char *) &serv_addr, sizeof(serv_addr));
    serv_addr.sin_family = AF_INET;
    bcopy((char *)server->h_addr,
         (char *)&serv_addr.sin_addr.s_addr,
         server->h_length);
    serv_addr.sin_port = htons(portno);
    if (connect(sockfd,(struct sockaddr *) &serv_addr,sizeof(serv_addr)) < 0)
        error("ERROR connecting");

  // n = write(sock,"send me your message",18);
    printf("Please enter the message: ");
    bzero(buffer,256);
    fgets(buffer,255,stdin);
        ptr_myfile=fopen("test2.txt","w");

         for(counter=1;counter <=10;counter++){
             fwrite(&ptr_myfile,sizeof(*buffer),1,buffer);
             n = read(sockfd,buffer,255);
             n = write(sockfd,buffer,18);


    n = write(sockfd,buffer,strlen(buffer));
    if (n < 0) error("ERROR writing to socket");
    bzero(buffer,256);
    n = read(sockfd,buffer,255);
    if (n < 0) error("ERROR reading from socket");
   // printf("%s\n",buffer);
                    };//close for loop
    close(sockfd);

    }// close event loop
    return 0;
}// close main function