www.pudn.com > MSTCPSDK.rar > CLIENT.C

/*      COPYRIGHT, (c) HEWLETT PACKARD CO. 1990,1991 */ 
/*      All rights reserved. No part of this program */ 
/*      may be copied or used without the express    */ 
/*      written consent of HEWLETT PACKARD Corp.     */ 
             
#include  
#include  
#include  
#include  
#include  
#include  
             
#define BUFFER_SIZE 1000 
#define LINE_LEN    70 
             
char sendbuf[BUFFER_SIZE]; 
char recvbuf[BUFFER_SIZE]; 
struct sockaddr_in server_addr, client_addr; 
             
             
int sleep( seconds ) 
int seconds; 
{ 
    long start_seconds, current_seconds, end_seconds; 
 
    time( &start_seconds ); 
    end_seconds = start_seconds + (long) seconds; 
 
    do { 
        time( ¤t_seconds ); 
    } while ( current_seconds < end_seconds ); 
             
    return( 0 ); 
} 
             
             
/* 
**  This program acts as a sockets IPC client.  It will attempt to connect to 
**  a remote server node, send, and then receive data. 
*/ 
             
int errno; 
 
main( argc, argv ) 
int argc; 
char *argv[]; 
{ 
    int rc, i, len, total, size, sd, seconds; 
             
    if ( argc < 5 ) { 
        printf( "Usage: %s    \n", argv[0] ); 
        exit( 1 ); 
    } 
             
    size  = atoi( argv[3] ); 
             
             
    /* 
    **  Create a local endpoint for communication. 
    */ 
             
    sd = socket( AF_INET, SOCK_STREAM, 0 ); 
    if ( sd < 0 ) { 
        printf( "Error: socket() call failed w/rc=%d, errno=%d\n", sd, errno ); 
        exit( 1 ); 
    } 
    printf( "socket() returned %d\n", sd ); 
             
             
    /* 
    **  Fill in a socket address structure with the necessary information 
    **  about the remote server node (remote node IP address and port for 
    **  incoming connections) and attempt to connect to the server. This connect 
    **  call will block until the remote server has accepted the connection or 
    **  the connection request times out. 
    */ 
 
    server_addr.sin_family = AF_INET; 
    server_addr.sin_port = htons( atoi( argv[2] ) ); 
    server_addr.sin_addr.s_addr = inet_addr( argv[1] ); 
             
    rc = connect( sd, (struct sockaddr *) &server_addr, sizeof(server_addr) ); 
    if ( rc < 0 ) { 
        printf( "Error: connect() call failed w/errno=%d\n", errno ); 
        close_socket( sd ); 
        exit( 1 ); 
    } 
    printf( "Established connection with 0x%lx\n", server_addr.sin_addr ); 
    seconds = atoi( argv[4] ); 
    printf( "Waiting %d seconds before sending data...\n", seconds ); 
    sleep( seconds ); 
             
    /* 
    **  Send the number of bytes specified on the command line to the server. 
    */ 
             
    for (i=0; i