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Subject: NETWORK PROGRAMMING LAB Year : 2010 Class : IV B-Tech C.S.E Semester: First /*udp_str_clnt.c*/ #include /* for exit() */ #include #include #include #include #include #include #include #include /* memset() */ #include /* select() */ #define REMOTE_SERVER_PORT 1500 #define MAX_MSG 100 #define SOCKET_ERROR -1 int isReadable(int sd,int * error,int timeOut) { // milliseconds fd_set socketReadSet; FD_ZERO(&socketReadSet); FD_SET(sd,&socketReadSet); struct timeval tv; if (timeOut) { tv.tv_sec = timeOut / 1000; tv.tv_usec = (timeOut % 1000) * 1000; } else { } // if tv.tv_sec = 0; tv.tv_usec = 0; NP Lab Manual , RNEC page: 62
if (select(sd+1,&socketReadSet,0,0,&tv) == SOCKET_ERROR) { *error = 1; return 0; } // if *error = 0; return FD_ISSET(sd,&socketReadSet) != 0; } /* isReadable */ /* END jcs 3/30/05 */ int main(int argc, char *argv[]) { int sd, rc, i, n, echoLen, flags, error, timeOut; struct sockaddr_in cliAddr, remoteServAddr, echoServAddr; struct hostent *h; char msg[MAX_MSG]; /* check command line args */ if(argch_name, inet_ntoa(*(struct in_addr *)h->h_addr_list[0])); remoteServAddr.sin_family = h->h_addrtype; memcpy((char *) &remoteServAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length); remoteServAddr.sin_port = htons(REMOTE_SERVER_PORT); /* socket creation */ sd = socket(AF_INET,SOCK_DGRAM,0); NP Lab Manual , RNEC page: 63
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IV YEAR B.Tech Network Programming
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o after call to fork o after both c
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WEEK 1: Aim: Implement the pipe usi
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Subject: NETWORK PROGRAMMING LAB Ye
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Output: [student@localhost ~]$ vi p
Page 11 and 12: Output: [student@localhost ~/khan]$
Page 13 and 14: } fclose(f); //closing file //creat
Page 15 and 16: Subject: NETWORK PROGRAMMING LAB Ye
Page 17 and 18: Output: [student@localhost ~]$ cc m
Page 19 and 20: main() { int shmid; int semid; key_
Page 21 and 22: } for (i = 0; i < CHILD_INCREMENT_C
Page 23 and 24: if (*parent_shm == (CHILD_INCREMENT
Page 27 and 28: Output: [student@localhost ~]$ cc t
Page 29 and 30: Output: [student@localhost ~]$ ./ t
Page 31 and 32: } bzero(&servaddr, sizeof(servaddr)
Page 41 and 42: servAddr.sin_addr.s_addr = htonl(IN
Page 43 and 44: Output: [student@localhost ~]$ cc u
Page 45 and 46: *error = 0; return FD_ISSET(sd,&soc
Page 47 and 48: if(n
Page 51 and 52: printf("%s: from %s:UDP%u : %s \n"
Page 55 and 56: cliAddr.sin_family = AF_INET; cliAd
Page 57 and 58: Output: [student@localhost ~]$ cc u
Page 59 and 60: if(rc
Page 61: Output: [student@localhost ~]$ cc u
Page 65 and 66: } (struct sockaddr *) &echoServAddr
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