/* fpont 1/00 *//* pont.net    *//* tcpServer.c */#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>#include <netdb.h>#include <stdio.h>#include <unistd.h> /* close */#include <sys/stat.h>#include <fcntl.h>#define SUCCESS 0#define ERROR   1#define END_LINE 0x0#define SERVER_PORT 1500#define MAX_MSG 1024/* function readline */int read_line();int main (int argc, char *argv[]) {    int sd, newSd, cliLen, n;  int fd;  struct sockaddr_in cliAddr, servAddr;  char line[MAX_MSG];  /* create socket */  sd = socket(AF_INET, SOCK_STREAM, 0);   if(sd<0) {    perror("cannot open socket ");    return ERROR;  }    /* bind server port */  servAddr.sin_family = AF_INET;  servAddr.sin_addr.s_addr = htonl(INADDR_ANY);  servAddr.sin_port = htons(SERVER_PORT);    if(bind(sd, (struct sockaddr *) &servAddr, sizeof(servAddr))<0) {    perror("cannot bind port ");    return ERROR;  }  listen(sd,5);  fd=open("rcv.mpg",O_WRONLY|O_CREAT|O_APPEND);
        if(fd==-1)
        {       printf("cannot creat file %s",argv[1]);
                exit(1);
        }    while(1) {    printf("%s: waiting for data on port TCP %u\n",argv[0],SERVER_PORT);    cliLen = sizeof(cliAddr);    newSd = accept(sd, (struct sockaddr *) &cliAddr, &cliLen);    if(newSd<0) {      perror("cannot accept connection ");      return ERROR;    }            /* init line */    memset(line,0x100,MAX_MSG);              /* receive segments */    while(1) {     n = recv(newSd, line, MAX_MSG, 0);     write(fd,line,n);           if(n!=MAX_MSG){         printf("file recieved as 'rcv.mpg'\n");         break;                        }    } /* while(read_line) */      } /* while (1) */close(fd);return 0;}