streaming bi-directional test mode for selfserv and strsclnt

Assigned to


14 years ago
10 years ago


(Reporter: julien.pierre, Assigned: alvolkov.bgs)



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(2 attachments)



14 years ago
Currently, strsclnt can only make a single short GET HTTP request to the server.
There is no way to make a POST request or do anything else that can send a lot
of data to the server.

We need a way to test client to server throughput and bi-directional throughput.
The simplest way to do this might be to have them talk something other than
HTTP, ie. a simple byte protocol where each side sends a header with the # of
bytes to follow. This may however require using non-blocking sockets to get
right if only one side is sending data to avoid deadlocks; or multiple threads
per socket (one for each side) with the full-duplex option set, and of course
proper synchronization for the close case.


14 years ago
Priority: -- → P2
Target Milestone: --- → 3.10


14 years ago
Summary: bi-directional test mode for selfserv and strsclnt → streaming bi-directional test mode for selfserv and strsclnt

Comment 1

14 years ago
Nelson mentioned that the -2 option already has some of the code we need to
implement this.


14 years ago
Assignee: wtchang → saul.edwards.bugs

Comment 2

14 years ago
Created attachment 179010 [details] [diff] [review]
strsclnt patch

This patch is an experiment to attempt to do bidirectional I/O with strsclnt .
It also tries to fix the issue where a thread is restarted for each request.
The patch has bugs and hangs have been observed with it. But it is a starting

Comment 3

14 years ago
Created attachment 179011 [details] [diff] [review]
matching selfserv patch

Goes together with the strsclnt patch. Also broken .

Comment 4

14 years ago
Alexei, this is the bug we were discussing earlier today.
The patch to strsclnt will need to be merged since the threading fixes are part
of bugzilla 292151 and will be checked in soon.

Right now, the logic contained in these patches to do the HTTP POST request in
strsclnt and send large responses in selfserv doesn't work properly. A long
stress test will result in all the threads eventually hanging on both sides.
Assignee: saul.edwards.bugs → alexei.volkov.bugs
Target Milestone: 3.10 → 3.11

Comment 5

13 years ago
When this is implemented, there should be a way to configure the size of the
requests and responses, ie. HTTP content-length . I would suggest adding a
command-line argument for both strsclnt and selfserv.

The HTTP content-length header wouldn't necessarily have to be parsed on either
the client or server side. The client could just send any data it wants and then
call PR_Shutdown() to shut down the send side of the connection. The server
could PR_Read until it gets an EOF (0), then start sending, then PR_Close. The
client would read the response until EOF . This is what I was trying accomplish
in the patches I attached, but something was wrong and needs to be fixed. I have
implemented other clients with this approach before, and it worked fine.
QA Contact: bishakhabanerjee → jason.m.reid
QA Contact: jason.m.reid → libraries
Target Milestone: 3.11 → 3.11.1


12 years ago
Target Milestone: 3.11.1 → 3.12


11 years ago
Keywords: perf
Unsetting target milestone in unresolved bugs whose targets have passed.
Target Milestone: 3.12 → ---
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