Last change
on this file since cf34e82 was
f0d67e5,
checked in by Thierry Delisle <tdelisle@…>, 4 years ago
|
Restored io examples to example folder
|
-
Property mode set to
100644
|
File size:
2.1 KB
|
Line | |
---|
1 | #include <stdio.h> |
---|
2 | #include <stdlib.h> |
---|
3 | #include <string.h> |
---|
4 | |
---|
5 | #include <netdb.h> |
---|
6 | #include <unistd.h> |
---|
7 | |
---|
8 | #include <sys/types.h> |
---|
9 | #include <sys/socket.h> |
---|
10 | |
---|
11 | int main(int argc, char * argv[]) { |
---|
12 | if(argc != 2) { |
---|
13 | printf("usage: %s portnumber\n", argv[0]); |
---|
14 | exit( EXIT_FAILURE ); |
---|
15 | } |
---|
16 | int port = atoi(argv[1]); |
---|
17 | if(port < 1) { |
---|
18 | printf("Invalid port : %d (from %s)\n", port, argv[1]); |
---|
19 | exit( EXIT_FAILURE ); |
---|
20 | } |
---|
21 | |
---|
22 | int sock = socket(AF_INET, SOCK_STREAM, 0); |
---|
23 | if(sock < 0) { |
---|
24 | perror( "socket" ); |
---|
25 | exit( EXIT_FAILURE ); |
---|
26 | } |
---|
27 | |
---|
28 | struct hostent * server = gethostbyname("localhost"); |
---|
29 | if(server == NULL) { |
---|
30 | perror("localhost not found"); |
---|
31 | exit( EXIT_FAILURE ); |
---|
32 | } |
---|
33 | |
---|
34 | struct sockaddr_in serv_addr; |
---|
35 | memset(&serv_addr, 0, sizeof(serv_addr)); |
---|
36 | serv_addr.sin_family = AF_INET; |
---|
37 | memcpy(&serv_addr.sin_addr.s_addr, server->h_addr, server->h_length); |
---|
38 | serv_addr.sin_port = htons(port); |
---|
39 | |
---|
40 | int ret = connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)); |
---|
41 | if(ret < 0) { |
---|
42 | perror( "connect" ); |
---|
43 | exit( EXIT_FAILURE ); |
---|
44 | } |
---|
45 | |
---|
46 | char buffer[256]; |
---|
47 | struct iovec iov = { buffer, 0 }; |
---|
48 | struct msghdr msg; |
---|
49 | msg.msg_name = NULL; |
---|
50 | msg.msg_namelen = 0; |
---|
51 | msg.msg_control = NULL; |
---|
52 | msg.msg_controllen = 0; |
---|
53 | msg.msg_iov = &iov; |
---|
54 | msg.msg_iovlen = 1; |
---|
55 | msg.msg_flags = 0; |
---|
56 | |
---|
57 | |
---|
58 | int rd; |
---|
59 | while(0 != (rd = read(STDIN_FILENO, buffer, 256))) { |
---|
60 | if(rd < 0) { |
---|
61 | perror( "read" ); |
---|
62 | exit( EXIT_FAILURE ); |
---|
63 | } |
---|
64 | |
---|
65 | iov.iov_len = rd; |
---|
66 | int sent = sendmsg(sock, &msg, 0); |
---|
67 | if( sent < 0 ) { |
---|
68 | perror( "read" ); |
---|
69 | exit( EXIT_FAILURE ); |
---|
70 | } |
---|
71 | |
---|
72 | if(sent != rd) { |
---|
73 | printf("Expected to send %d bytes, sent %d\n", rd, sent); |
---|
74 | exit( EXIT_FAILURE ); |
---|
75 | } |
---|
76 | } |
---|
77 | |
---|
78 | ret = close(sock); |
---|
79 | if(ret < 0) { |
---|
80 | perror( "close" ); |
---|
81 | exit( EXIT_FAILURE ); |
---|
82 | } |
---|
83 | |
---|
84 | exit( EXIT_SUCCESS ); |
---|
85 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.