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Date: Thu, 5 May 2005 22:33:18 -0400
From: "J.R. Oldroyd" <fbsd@opal.com>
To: freebsd-current@freebsd.org
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Subject: async connect problem
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Isn't our behaviour wrong...

On 6-current, the program below prints:
	connect: Connection refused

Shouldn't it print:
	connect: Operation now in progress

Hint: it does on Linux.

	-jr


------
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>  
#include <arpa/inet.h>
#include <fcntl.h>

main()
{
	int s;
	int f;
	struct sockaddr_in addr;

	addr.sin_family = AF_INET;
	addr.sin_port = htons(54321); /* port with nothing on it */
        addr.sin_addr.s_addr = inet_addr("127.0.0.1");

	s = socket(PF_INET, SOCK_STREAM, 0);
	if (s < 0) {
		perror("socket");
		exit(1);
	}
	f = fcntl(s, F_GETFL, 0);
	if (f < 0) {
		perror("fcntl F_GETFL");
		exit(1);
	}
	f |= O_NONBLOCK;
	if (fcntl(s, F_SETFL, f) < 0) {
		perror("fcntl F_SETFL");
		exit(1);
	}
	if (connect(s, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
		perror("connect");
		exit(1);
	}
	exit(0);
}