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Re: curl_multi_perform blocking

From: Joe Halpin <j.p.h_at_comcast.net>
Date: Tue, 23 Mar 2004 09:04:43 -0600

Daniel Stenberg wrote:
> On Mon, 22 Mar 2004 farr_at_metservice.com wrote:
>
>>Unfortunately I cant cant install tcpdump on either the server or any of the
>>systems that seem to curl exception problem. I have attached a pcap file
>>that shows another strange problem that requires me to retry the same file.
>
> Sorry, but I can't readily inspect pcap files. It would be a lot easier if you
> converted it to some kind of textual data.

I looked at it with ethereal. The client issues a RETR and the server
starts sending a file. The client data port closes before the transfer
is complete (the server doesn't notice this so there are a bunch of RST
responses).

When the server has sent the whole file it sends the 226 message, which
results in a RST being returned on the control connection.

It looks to me like the client crashed during the transfer. One I start
seeing RST on the data connection there isn't any response of any kind
from the client. TCP just keeps sending RST.

Joe
Received on 2004-03-23