[Newbie] Strange accept() with ab behaviour
[Newbie] Strange accept() with ab behaviour
- Subject: [Newbie] Strange accept() with ab behaviour
- From: Andrea -XFox- Govoni <email@hidden>
- Date: Fri, 16 Jul 2004 02:43:27 +0200
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Hi all,
sorry for the newbie question but I really can't understand this.
I'm on Mac OS X 10.3.4 and I'm working with BSD sockets.
I noticed a strange (for me) behaviour of the accept() system call
tested with ApacheBench, Version 1.3d (the default ApacheBench installed
with Phanter).
This is my simple test case:
<begin-code-here>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
int main(int argc, char *argv[]) {
int listen_socket, com_socket, dim;
struct sockaddr_in a_socket, b_socket;
dim = sizeof(struct sockaddr);
a_socket.sin_family = AF_INET;
a_socket.sin_port = htons(2000);
a_socket.sin_addr.s_addr = INADDR_ANY;
bzero(&(a_socket.sin_zero), 8);
listen_socket = socket(AF_INET, SOCK_STREAM, 0);
if(bind(listen_socket, (struct sockaddr *)&a_socket, dim) == -1) {
puts("\nBIND() ERROR\n");
return -1;
}
listen(listen_socket, 10);
while(1) {
com_socket = accept(listen_socket, (struct sockaddr *)&b_socket, &dim);
puts("I'm in.");
close(com_socket);
}
return 0;
}
<end-code-here>
I read in the man page that accept() is blocking by default, that is, if
there aren't clients in the listen socket queue it should stop and wait
for a client.
If I start the server, open iCab 2.9.8 and type "
http://127.0.0.1:2000/";
in the address line it works as expected (it prints "I'm in." to the
standard output only one time).
Conversely, if I test my server with ApacheBench with the command "ab
http://127.0.0.1:2000/"; (that should send only one request), I got two
prints of "I'm in.".
My simple question is: why?
I need to test my rough web server with ApacheBench, so I need to solve
this.
Thanks in advance,
- --
Andrea "XFox" Govoni
ICQ UIN: 43488185
AIM/iChat: email@hidden
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