From: naan than (naanthanda@gmail.com)
Date: Sat Sep 22 2007 - 01:10:15 EDT
Hi,
My client application is connecting to a remote server using TCP/IP. When
the connection is established and the communication is going on between my
application and the remote server, i am seeing the following lines in the
pfiles output:
4: S_IFIFO mode:0666 dev:306,77000 ino:37354 uid:23718 gid:23718 size:0
O_RDWR
/dataserver/baais2_server/tmp/fifo.7998
5: S_IFSOCK mode:0666 dev:349,0 ino:58451 uid:0 gid:0 size:0
O_RDWR
SOCK_STREAM
SO_SNDBUF(49152),SO_RCVBUF(1002016),IP_NEXTHOP(0.15.74.3)
sockname: AF_INET 150.252.11.19 port: 33764
peername: AF_INET 16.101.119.5 port: 4712
When the server was brought down, my application is supposed to close the
existing connection and try to reconnect, but i believe it is not closing
the existing socket. I am seeing the following lines in the pfiles output
4: S_IFIFO mode:0666 dev:306,77000 ino:37354 uid:23718 gid:23718 size:0
O_RDWR
/dataserver/baais2_server/tmp/fifo.7998
5: S_IFSOCK mode:0666 dev:349,0 ino:58451 uid:0 gid:0 size:0
O_RDWR
SOCK_STREAM
SO_SNDBUF(49152),SO_RCVBUF(1002016),IP_NEXTHOP(0.15.74.3)
sockname: AF_INET 150.252.11.19 port: 33764
- When the server is down, my client program is not sending any SYN at all;
nor is in ESTABLISHED state. I was expecting a CLOSE_WAIT state.In fact i am
not seeing any state in netstat output.
As i said, i believe my application is not closing the socket. Could someone
please shed some light on this?
Would SO_LINGER option on the client side resolve the above issue?
Note: I am running 3 instances of my client program and only one got into
this issue. The other 2 are at-least sending SYN to the remote server when
it was down. For those 2 servers, i dont see the any line starts with
"S_IFSOCK "
i would appreciate your response!!
Thanks
Naan.
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