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| 1 | #include <stdio.h> | |
| 2 | #include <stdlib.h> | |
| 3 | #include <unistd.h> | |
| 4 | #include <string.h> | |
| 5 | #include <sys/types.h> | |
| 6 | #include <sys/socket.h> | |
| 7 | #include <netinet/in.h> | |
| 8 | #include <netdb.h> | |
| 9 | #include <arpa/inet.h> // inet_ntoa | |
| 10 | #include <time.h> // time | |
| 11 | //====================================================================== | |
| 12 | int error( int ern, const char *err ){
| |
| 13 | perror( err ); | |
| 14 | return ern; | |
| 15 | } | |
| 16 | //====================================================================== | |
| 17 | int main( void ) | |
| 18 | {
| |
| 19 | /* zmienne predefiniowane *****************************************/ | |
| 20 | int port = 12345; | |
| 21 | char host[] = "192.168.10.150"; | |
| 22 | /* zmienne niezainicjowane ****************************************/ | |
| 23 | int fd, n; | |
| 24 | struct sockaddr_in serv_addr; | |
| 25 | struct hostent *server; | |
| 26 | char buffer[256]; | |
| 27 | ||
| 28 | /* tworzymy gniazdo ***********************************************/ | |
| 29 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
| 30 | ||
| 31 | if (fd < 0) | |
| 32 | return error( 1, "socket()"); | |
| 33 | ||
| 34 | /* pobieramy informacje o serwerze ********************************/ | |
| 35 | server = gethostbyname( host ); | |
| 36 | ||
| 37 | if( server == NULL ) | |
| 38 | return error( 2, "gethostbyname()" ); | |
| 39 | ||
| 40 | /* zapelniamy strukture zerami (inicjujemy) ***********************/ | |
| 41 | bzero((char *) &serv_addr, sizeof(serv_addr)); | |
| 42 | ||
| 43 | /* przypisujemy parametry *****************************************/ | |
| 44 | serv_addr.sin_family = AF_INET; // typ gniazda | |
| 45 | serv_addr.sin_port = htons(port); // port | |
| 46 | ||
| 47 | bcopy( (char *) server->h_addr, (char *) &serv_addr.sin_addr.s_addr, server->h_length ); | |
| 48 | ||
| 49 | /* nawiazujemy polaczenie *****************************************/ | |
| 50 | if( connect( fd, (struct sockaddr *) &serv_addr, sizeof( serv_addr ) ) < 0 ) | |
| 51 | return error( 3, "connect()" ); | |
| 52 | ||
| 53 | ||
| 54 | /* zerujemy bufor *************************************************/ | |
| 55 | bzero( buffer, 256 ); | |
| 56 | ||
| 57 | ||
| 58 | /* przekazujemy serwerowi informacje o biezacym czasie ****/ | |
| 59 | //sprintf( buffer, "Current time: %d", (int) time( NULL ) ); | |
| 60 | - | //sprintf(buffer, "%d", 21); |
| 60 | + | sprintf(buffer, "proba 12"); |
| 61 | - | buffer[0] = 'z'; |
| 61 | + | //buffer[0] = 'z'; |
| 62 | - | buffer[1] = 'b'; |
| 62 | + | //buffer[1] = 'b'; |
| 63 | - | n = write( fd, buffer, 2 ); |
| 63 | + | n = write( fd, buffer, sizeof(buffer) ); |
| 64 | if( n < 0 ) // sprawdzamy, czy wystapil blad .... | |
| 65 | perror( "write()" ); | |
| 66 | ||
| 67 | ||
| 68 | /* konczymy polaczenie ********************************************/ | |
| 69 | close(fd); | |
| 70 | ||
| 71 | //------------------------------------------------------------------ | |
| 72 | return 0; | |
| 73 | } | |
| 74 | //====================================================================== |
