Re: Socket error, info "Invalid Argument"

From: John Helliwell <john.helliwell#gmail.com>
Date: Tue, 5 Apr 2011 14:04:07 +0100

On 5 April 2011 13:44, Willy Tarreau <w#1wt.eu> wrote:

> Hi John,
>
> On Tue, Apr 05, 2011 at 11:44:40AM +0100, John Helliwell wrote:
> > Thanks, I've started the 1.5dev5 daemon, and copied what I think is
> relevant
> > from the truss output
> > pollsys(0x004DAD00, 4, 0xFFBFFCA0, 0x00000000) = 1
> > accept(7, 0xFFBFFB98, 0xFFBFFB94, SOV_DEFAULT) = 0
> > fcntl(0, F_SETFL, FNONBLOCK) = 0
> > setsockopt(0, tcp, TCP_NODELAY, 0x0006F718, 4, SOV_DEFAULT) = 0
> > accept(7, 0xFFBFFB98, 0xFFBFFB94, SOV_DEFAULT) Err#11 EAGAIN
> > pollsys(0x004DAD00, 5, 0xFFBFFCA0, 0x00000000) = 1
> > recv(0, " G E T / H T T P / 1".., 8192, 0) = 341
> > getsockopt(0, SOL_SOCKET, SO_ERROR, 0xFFBFFAB4, 0xFFBFFAB0, SOV_DEFAULT)
> = 0
> > send(0, " H T T P / 1 . 0 2 0 0".., 12682, 128) = 12682
> > pollsys(0x004DAD00, 5, 0xFFBFFCA0, 0x00000000) = 0
> > getsockopt(0, SOL_SOCKET, SO_ERROR, 0xFFBFFAB4, 0xFFBFFAB0, SOV_DEFAULT)
> = 0
> > send(0, " < t r c l a s s = " a".., 12438, 128) = 12438
> > pollsys(0x004DAD00, 5, 0xFFBFFCA0, 0x00000000) = 0
> > pollsys(0x004DAD00, 5, 0xFFBFFCA0, 0x00000000) = 0
> > pollsys(0x004DAD00, 5, 0xFFBFFCA0, 0x00000000) = 1
> > getsockopt(0, SOL_SOCKET, SO_ERROR, 0xFFBFFC24, 0xFFBFFC20, SOV_DEFAULT)
> = 0
> > send(0, " < t r c l a s s = " b".., 770, 128) = 770
> > shutdown(0, SHUT_WR, SOV_DEFAULT) = 0
> > close(0) = 0
> > sendto(5, " < 1 3 1 > A p r 5 ".., 172, 128, 0x00124598, 256) Err#22
> > EINVAL
> > sendto(5, " < 1 3 9 > A p r 5 ".., 172, 128, 0x00124698, 256) Err#22
> > EINVAL
> > pollsys(0x004DAD00, 4, 0xFFBFFCA0, 0x00000000) = 0
> > so_socket(PF_INET, SOCK_STREAM, IPPROTO_TCP, "", SOV_DEFAULT) = 0
> > fcntl(0, F_SETFL, FNONBLOCK) = 0
> > setsockopt(0, tcp, TCP_NODELAY, 0x0006F718, 4, SOV_DEFAULT) = 0
> > connect(0, 0xFFBFFB98, 256, SOV_DEFAULT) Err#22 EINVAL
>
> OK so it's the connect() which fails on sockaddr_storage. I find
> this rather strange. Do you know if it works when you disable the
> checks ? I'm asking because the connect() call differs slightly
> between the checks and the normal sockets. I think it will fail
> too anyway.
>
> You can also try to write your server addresses in IPv6 format :
> "1.2.3.4" becomes "::1.2.3.4". This will result in connect() being
> called with an IPv4-in-IPv6 address. What I'm suspecting is that in
> your case, connect() only supports IPv6 format with sockaddr_storage,
> eventhough I find this quite strange.
>
> I'll try on my ultra5 in case I can reproduce it (solaris 8).
>
> Thanks,
> Willy
>
>

Hi Willy,

I disabled all the checks (commented out option httpchk and took the check option out of the server entries), but still couldn't contact a backend server.

Then I tried changing all the IPv4 addresses to IPv6, with much the same result.

Regards

John.

pollsys(0x004F11F0, 4, 0xFFBFFCB8, 0x00000000)  = 1
accept(7, 0xFFBFFBB0, 0xFFBFFBAC, SOV_DEFAULT)  = 0
fcntl(0, F_SETFL, FNONBLOCK)                    = 0

setsockopt(0, tcp, TCP_NODELAY, 0x0006F718, 4, SOV_DEFAULT) = 0

accept(7, 0xFFBFFBB0, 0xFFBFFBAC, SOV_DEFAULT)  Err#11 EAGAIN
pollsys(0x004F11F0, 5, 0xFFBFFCB8, 0x00000000)  = 1
recv(0, " G E T   /   H T T P / 1".., 8192, 0)  = 341

getsockopt(0, SOL_SOCKET, SO_ERROR, 0xFFBFFACC, 0xFFBFFAC8, SOV_DEFAULT) = 0 send(0, " H T T P / 1 . 0 2 0 0".., 12690, 128) = 12690 pollsys(0x004F11F0, 5, 0xFFBFFCB8, 0x00000000) = 0 getsockopt(0, SOL_SOCKET, SO_ERROR, 0xFFBFFACC, 0xFFBFFAC8, SOV_DEFAULT) = 0 send(0, " < t r c l a s s = " a".., 12787, 128) = 12787

pollsys(0x004F11F0, 5, 0xFFBFFCB8, 0x00000000)  = 0
pollsys(0x004F11F0, 5, 0xFFBFFCB8, 0x00000000)  = 0
pollsys(0x004F11F0, 5, 0xFFBFFCB8, 0x00000000)  = 1

getsockopt(0, SOL_SOCKET, SO_ERROR, 0xFFBFFC3C, 0xFFBFFC38, SOV_DEFAULT) = 0 send(0, " < t r c l a s s = " a".., 4972, 128) = 4972

shutdown(0, SHUT_WR, SOV_DEFAULT)               = 0
close(0)                                        = 0
sendto(5, " < 1 3 1 > A p r     5  ".., 172, 128, 0x0013A9F8, 256) Err#22
EINVAL
sendto(5, " < 1 3 9 > A p r     5  ".., 172, 128, 0x0013AAF8, 256) Err#22

EINVAL
pollsys(0x004F11F0, 4, 0xFFBFFCB8, 0x00000000) = 0 so_socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP, "", SOV_DEFAULT) = 0

fcntl(0, F_SETFL, FNONBLOCK)                    = 0
setsockopt(0, tcp, TCP_NODELAY, 0x0006F718, 4, SOV_DEFAULT) = 0
connect(0, 0xFFBFFBB0, 256, SOV_DEFAULT)        Err#22 EINVAL

close(0)

-- 
John Helliwell

Received on 2011/04/05 15:04