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o after all calls to close If the parent wants to receive data from the child, it should close fd1, and the child should close fd0. If the parent wants to send data to the child, it should close fd0, and the child should close fd1. Since descriptors are shared between the parent and child, we should always be sure to close the end of pipe we aren't concerned with. On a technical note, the EOF will never be returned if the unnecessary ends of the pipe are not explicitly closed. NP Lab Manual , RNEC P a g e | 4 For more Details access portals : ravinuthalavs.webs.com Ravinuthalavs.blogspot.com
WEEK 1: Aim: Implement the pipe using fork () /* file name pipe.c */ # include # include # include # define MAXLINE 4096 int main() { int n,fd[2]; pid_t pid; char line[MAXLINE]; if(pipe(fd)
- Page 1 and 2: IV YEAR B.Tech Network Programming
- Page 3: o after call to fork o after both c
- Page 7 and 8: Subject: NETWORK PROGRAMMING LAB Ye
- Page 9 and 10: 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 25 and 26: Subject: NETWORK PROGRAMMING LAB Ye
- 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 33 and 34: Subject: NETWORK PROGRAMMING LAB Ye
- Page 35 and 36: Subject: NETWORK PROGRAMMING LAB Ye
- Page 37 and 38: Output: [student@localhost ~]$ cc t
- Page 39 and 40: Output: [student@localhost ~]$ cc t
- 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 49 and 50: Subject: NETWORK PROGRAMMING LAB Ye
- Page 51 and 52: printf("%s: from %s:UDP%u : %s \n"
- Page 53 and 54: Subject: NETWORK PROGRAMMING LAB Ye
o after all calls to close<br />
If the parent wants to receive data from the child, it should close fd1, and the child should<br />
close fd0. If the parent wants to send data to the child, it should close fd0, and the child<br />
should close fd1. Since descriptors are shared between the parent and child, we should<br />
always be sure to close the end of pipe we aren't concerned with. On a technical note, the<br />
EOF will never be returned if the unnecessary ends of the pipe are not explicitly closed.<br />
NP Lab Manual , RNEC P a g e | 4<br />
For more Details access portals : ravinuthalavs.webs.com<br />
Ravinuthalavs.blogspot.com
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