Last change
on this file since b8561fa 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
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Rev | Line | |
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[6c6e36c] | 1 | #include <stdio.h> |
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| 2 | #include <stdlib.h> |
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| 3 | #include <string.h> |
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| 4 | |
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| 5 | #include <netdb.h> |
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| 6 | #include <unistd.h> |
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| 7 | |
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| 8 | #include <sys/types.h> |
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| 9 | #include <sys/socket.h> |
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| 10 | |
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| 11 | int main(int argc, char * argv[]) { |
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| 12 | if(argc != 2) { |
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| 13 | printf("usage: %s portnumber\n", argv[0]); |
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| 14 | exit( EXIT_FAILURE ); |
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| 15 | } |
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| 16 | int port = atoi(argv[1]); |
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| 17 | if(port < 1) { |
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| 18 | printf("Invalid port : %d (from %s)\n", port, argv[1]); |
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| 19 | exit( EXIT_FAILURE ); |
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| 20 | } |
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| 21 | |
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| 22 | int sock = socket(AF_INET, SOCK_STREAM, 0); |
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| 23 | if(sock < 0) { |
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| 24 | perror( "socket" ); |
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| 25 | exit( EXIT_FAILURE ); |
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| 26 | } |
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| 27 | |
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| 28 | struct hostent * server = gethostbyname("localhost"); |
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| 29 | if(server == NULL) { |
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| 30 | perror("localhost not found"); |
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| 31 | exit( EXIT_FAILURE ); |
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| 32 | } |
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| 33 | |
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| 34 | struct sockaddr_in serv_addr; |
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| 35 | memset(&serv_addr, 0, sizeof(serv_addr)); |
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| 36 | serv_addr.sin_family = AF_INET; |
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| 37 | memcpy(&serv_addr.sin_addr.s_addr, server->h_addr, server->h_length); |
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| 38 | serv_addr.sin_port = htons(port); |
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| 39 | |
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| 40 | int ret = connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)); |
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| 41 | if(ret < 0) { |
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| 42 | perror( "connect" ); |
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| 43 | exit( EXIT_FAILURE ); |
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| 44 | } |
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| 45 | |
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| 46 | char buffer[256]; |
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| 47 | struct iovec iov = { buffer, 0 }; |
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| 48 | struct msghdr msg; |
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| 49 | msg.msg_name = NULL; |
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| 50 | msg.msg_namelen = 0; |
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| 51 | msg.msg_control = NULL; |
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| 52 | msg.msg_controllen = 0; |
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| 53 | msg.msg_iov = &iov; |
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| 54 | msg.msg_iovlen = 1; |
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| 55 | msg.msg_flags = 0; |
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| 56 | |
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| 57 | |
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| 58 | int rd; |
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| 59 | while(0 != (rd = read(STDIN_FILENO, buffer, 256))) { |
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| 60 | if(rd < 0) { |
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| 61 | perror( "read" ); |
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| 62 | exit( EXIT_FAILURE ); |
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| 63 | } |
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| 64 | |
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| 65 | iov.iov_len = rd; |
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| 66 | int sent = sendmsg(sock, &msg, 0); |
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| 67 | if( sent < 0 ) { |
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| 68 | perror( "read" ); |
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| 69 | exit( EXIT_FAILURE ); |
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| 70 | } |
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| 71 | |
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| 72 | if(sent != rd) { |
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| 73 | printf("Expected to send %d bytes, sent %d\n", rd, sent); |
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| 74 | exit( EXIT_FAILURE ); |
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| 75 | } |
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| 76 | } |
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| 77 | |
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| 78 | ret = close(sock); |
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| 79 | if(ret < 0) { |
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| 80 | perror( "close" ); |
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| 81 | exit( EXIT_FAILURE ); |
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| 82 | } |
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| 83 | |
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| 84 | exit( EXIT_SUCCESS ); |
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| 85 | } |
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