/*
------------------------------------------------------------------------ *
* *
* socket-test.c *
* *
* This program demonstrates the communication with a web server *
* and dumps the server root page (index.htm) to the screen. *
* *
* this program has been written and tested with apache 1.3.28 *
* and implements the functions from Beej's Guide to Network Programming. *
* *
* *
* 20041117 frank4dd *
* ------------------------------------------------------------------------ */
#include < stdio.h >
#include < string .h >
#include < unistd.h >
#include < stdlib.h >
#include < sys / types.h >
#include < sys / socket.h >
#include < netinet / in .h >
#include < arpa / inet.h >
#define DEST_IP "192.168.11.8"
#define DEST_PORT 80
#define MAXDATASIZE 1024
int main() {
int i, sum;
int sockfd;
int buflen;
int retcode;
struct sockaddr_in dest_addr;
char buf[MAXDATASIZE];
printf( " Creating socket file descriptor.\n " );
sockfd = socket(AF_INET, SOCK_STREAM, 0 );
printf( " Loading content into filedescriptor.\n " );
dest_addr.sin_family = AF_INET;
dest_addr.sin_port = htons(DEST_PORT);
dest_addr.sin_addr.s_addr = inet_addr(DEST_IP);
printf( " Zeroing the rest of the struct.\n " );
memset( & (dest_addr.sin_zero), ' \0 ' , 8 ); // zero the rest of the struct
printf( " Try connecting to %s.\n " , DEST_IP);
if ( connect(sockfd, ( struct sockaddr * ) & dest_addr,
sizeof ( struct sockaddr)) == - 1 ) {
perror( " Error connecting " );
exit( 1 );
} else {
printf( " Connected to %s.\n " , DEST_IP);
}
printf( " Sending data request to %s.\n " , DEST_IP);
sprintf(buf, " GET / HTTP/1.1\r\nHost: DEST_IP\r\nConnection: close\r\n\r\n " );
buflen = strlen(buf);
retcode = write(sockfd, buf, buflen);
printf( " Receiving data from %s.\n " , DEST_IP);
sum = 0 ;
do {
retcode = read(sockfd, buf, MAXDATASIZE);
sum = sum + retcode;
if (retcode > 0 ) {
for (i = 0 ;i < retcode;i ++ ) {
putchar(buf[i]);
}
} else break ;
}
while ( 1 );
printf( " Received %d bytes of data from %s.\n " , sum, DEST_IP);
printf( " Closing connection to %s.\n " , DEST_IP);
close(sockfd);
exit( 0 );
* *
* socket-test.c *
* *
* This program demonstrates the communication with a web server *
* and dumps the server root page (index.htm) to the screen. *
* *
* this program has been written and tested with apache 1.3.28 *
* and implements the functions from Beej's Guide to Network Programming. *
* *
* *
* 20041117 frank4dd *
* ------------------------------------------------------------------------ */
#include < stdio.h >
#include < string .h >
#include < unistd.h >
#include < stdlib.h >
#include < sys / types.h >
#include < sys / socket.h >
#include < netinet / in .h >
#include < arpa / inet.h >
#define DEST_IP "192.168.11.8"
#define DEST_PORT 80
#define MAXDATASIZE 1024
int main() {
int i, sum;
int sockfd;
int buflen;
int retcode;
struct sockaddr_in dest_addr;
char buf[MAXDATASIZE];
printf( " Creating socket file descriptor.\n " );
sockfd = socket(AF_INET, SOCK_STREAM, 0 );
printf( " Loading content into filedescriptor.\n " );
dest_addr.sin_family = AF_INET;
dest_addr.sin_port = htons(DEST_PORT);
dest_addr.sin_addr.s_addr = inet_addr(DEST_IP);
printf( " Zeroing the rest of the struct.\n " );
memset( & (dest_addr.sin_zero), ' \0 ' , 8 ); // zero the rest of the struct
printf( " Try connecting to %s.\n " , DEST_IP);
if ( connect(sockfd, ( struct sockaddr * ) & dest_addr,
sizeof ( struct sockaddr)) == - 1 ) {
perror( " Error connecting " );
exit( 1 );
} else {
printf( " Connected to %s.\n " , DEST_IP);
}
printf( " Sending data request to %s.\n " , DEST_IP);
sprintf(buf, " GET / HTTP/1.1\r\nHost: DEST_IP\r\nConnection: close\r\n\r\n " );
buflen = strlen(buf);
retcode = write(sockfd, buf, buflen);
printf( " Receiving data from %s.\n " , DEST_IP);
sum = 0 ;
do {
retcode = read(sockfd, buf, MAXDATASIZE);
sum = sum + retcode;
if (retcode > 0 ) {
for (i = 0 ;i < retcode;i ++ ) {
putchar(buf[i]);
}
} else break ;
}
while ( 1 );
printf( " Received %d bytes of data from %s.\n " , sum, DEST_IP);
printf( " Closing connection to %s.\n " , DEST_IP);
close(sockfd);
exit( 0 );
}
本文转自 OldHawk 博客园博客，原文链接：http://www.cnblogs.com/taobataoma/archive/2007/08/14/855279.html，如需转载请自行联系原作者
