160923 - Large RWIN values in Windows cause hang

Status: RESOLVED WORKSFORME

(Core :: Networking, defect)

Description

[Damir Perisa]

using mozilla 2002080308 on win98se with special network settings:
LAN with gateway to internet-router with:
  TTL:                    128
  Cache:                   64
  MTU:                   1500
  RWIN(Recieve-window): 47700    
-> this configuration causes mozilla to hang after some time

to compare with the usually used values(default on fresh win32-installations
with dial-up): normal TTL is 32 or 64ms, the cache is deactivated in win98,
MTU=1000 and RWIN about 4000 (what is 4xMTU)

i know that the RWIN is about 32xMTU, but why should that cause a bug in
mozilla??(if this bug has anything to do with this settings - maybe the hang has
another reason - unfortunately i changed the same time the network-connection
and mozilla-version (nightly build from last friday to the build mentioned above
- todays build))

Comment 1

[Matthias Versen [:Matti]]

Do you see a hang or 100% CPU ?
Have you enabled Http Pipelining ?

-> Networking

Comment 2

[benc]

+helpwanted - this will interest you guys.

Comment 3

[benc]

Damir: 

These are the settings on your Windows system? If so, please correct the
hardware & OS fields.

Is there any reason you want to make the window that large?

Comment 4

[benc]

I've tried to provide a shorter, more readable summary.

Also, can you describe the hang more, is it a system hang or an application
("not responding") problem.

Comment 5

[benc]

per bug 181135: all bugs owned by previous default owner that were not futured
are being reassigned to default owner.

Comment 6

[benc]

Damir: darin did a big async-IO rewrite. Can you try w/ a daily build from this
week or later (or Mozilla 1.3b when it is released)?

If I don't hear from you by the release, I'm going to RESOLVE/INVALID this bug.

Comment 7

[Matthias Versen [:Matti]]

-> wfm