From: Lyle Wincentsen [mailto:lyle.wincentsen@xxxxxxxxx]
Sent: Wednesday, June 03, 2009 10:53 PM
To: users@xxxxxxxxxxxxxxxx
Subject: Re: http/1.1 persistent connection issue.
On Wed, Jun 3, 2009 at 2:25 AM, <vincent.blondel@xxxxxx wrote:
Hello all,
I am trying to develop a little program that should be able to send
http/1.1 requests. This is all running fine but I get some problems
with the persistent connection.
I mean I can send one request in my http connection but the second one
does not seem to work properly.
Maybe I made an error in my code, maybe I do not understand something in
http/1.1 ?
Can somebody help me please ? ... many thks.
----- source code -------
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
#include <strings.h>
#include <stdio.h>
#include <stdlib.h>
const static char GET [] =
{
"GET / HTTP/1.1\r\n"
"Host: 127.0.0.1\r\n"
"User-Agent: UserAgent\r\n"
"Connection: keep-alive\r\n"
"\r\n"
};
int main(int argc, char **argv)
{
int bufsize = 0;
char buffer[1024] = "\n";
int32_t i32SocketFD = socket(PF_INET, SOCK_STREAM, 0);
if (-1 == i32SocketFD) {
fprintf(stderr, "Error i32SocketFD");
exit(-1);
}
struct sockaddr_in stSockAddr;
bzero(&stSockAddr, sizeof(stSockAddr));
stSockAddr.sin_family = AF_INET;
stSockAddr.sin_port = htons(80);
int32_t i32Res = inet_pton(AF_INET, "127.0.0.1", (void *)
&stSockAddr.sin_addr);
if (0 i32Res){
fprintf(stderr, "i32Res");
exit(-1);
} else if (0 == i32Res){
fprintf(stderr, "Error i32Res 2");
exit(-1);
}
if (-1 == connect(i32SocketFD, (struct sockaddr *) &stSockAddr,
sizeof(stSockAddr))) {
fprintf(stderr, "Error connect");
exit(-1);
}
if (send(i32SocketFD, GET, strlen(GET), 0) == -1) {
fprintf(stderr, "Error sending data.");
}
while((bufsize = read(i32SocketFD, buffer, sizeof(buffer) - 1))){
printf("%s",buffer);
}
if (send(i32SocketFD, GET, strlen(GET), 0) == -1) {
fprintf(stderr, "Error sending data.");
}
while((bufsize = read(i32SocketFD, buffer, sizeof(buffer) - 1))){
printf("%s",buffer);
}
shutdown(i32SocketFD, 2);
close(i32SocketFD);
}
It might be helpful if you included the stderr output, or whatever
indications you are getting that it "does not seem to work properly".
--
Lyle,
First of all, many thks to help me. Now what and how do I test my little
code. Simply I get an apache running at localhost on my debian machine
with a default apache website.
Concerning the code above, you see I send two requests in my socket so I
expect to receive the html code two times on my screen and this is not.
I simply see the code ONLY one time. If I remove "while .. bufsize ..
read .. printf" block code I see two requests coming in my apache logs
but the second request return 0 bytes ..
This is why I look on the net for finding a very little http/1.1 example
source code sending multiple requests in the same persistent socket
connection but nothing found till now. I found http/1.0, http/1.1
sending just one request. The other ones ( e.g firefox, ... ) are really
too long and complex for my knowlegde for getting an idea how to proceed
to send multiple requests in the same socket connection.
Below the result when sending one request in my socket connection but
how can I do to get all objects of one page in the same socket .. let we
take the example of one page containing the html, the css and the
javascript pages ?
-----
HTTP/1.1 302 Found
Date: Thu, 04 Jun 2009 05:45:26 GMT
Server: Apache/2.2.3 (Debian) mod_auth_kerb/5.3 mod_python/3.2.10
Python/2.4.4 PHP/5.2.0-8+etch15 mod_perl/2.0.2 Perl/v5.8.8
Location: http://127.0.0.1/apache2-default/
Content-Length: 392
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>302 Found</title>
</head><body>
<h1>Found</h1>
<p>The document has moved <a
href="http://127.0.0.1/apache2-default/";>here</a>.</p>
<hr>
<address>Apache/2.2.3 (Debian) mod_auth_kerb/5.3 mod_python/3.2.10
Python/2.4.4 PHP/5.2.0-8+etch15 mod_perl/2.0.2 Perl/v5.8.8 Server at
127.0.0.1 /address>
</body></html>
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