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| eedtag at eed.ericsson.se |
 Posted: Thu Jan 10, 2002 3:45 pm |
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Guest
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G'day,
I've been happily using the HTTP1.1 client from Johan Blom contained in the
sowap application to PUT and GET images and text, and to POST data to a form.
But have discovered that if I setup several PPP connections and attempt to PUT
or GET large numbers of files, e.g. do a few hundred GETs or PUTs one after the
other, then I eventually get the following error:
?error("Couldn't create TCP connection ~p",[Tag],tcp_connect),
The tcp connection is opened with:
gen_tcp:connect(Host,Port,TCPArgs)
After this I am unable to create any new TCP connections, i.e. I can no longer
do any http or ftp down- or uploads.
I think the problem may be that I have reached the max. number of sockets I can
open with Erlang. How many sockets can I open in Erlang?
How can I check that the socket I have just used has been closed again properly
or reset before I continue?
Is there anything else new on the HTTP1.1 front?
(I am working on a PC with RedHat Linux 7.0.)
Thankyou
Tanja Godau :-)
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| Chandrashekhar.Mullaparth |
| Posted: Thu Jan 10, 2002 4:08 pm |
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Guest
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On UNIX, generally there is a per process limit on the number of open files.
Probably this is what is limiting you more than anything else. On Solaris I
would do something like this:
shutdown the erlang node
In the UNIX shell type "ulimit -n" to see the current limit (which is
usually 64)
ulimit -n 256 (to set the limit to 256)
Start the erlang node again.
hope this helps.
Chandru
-----Original Message-----
From: Tanja Godau [mailto:eedtag_at_eed.ericsson.se]
Sent: 10 January 2002 15:45
To: erlang-questions_at_erlang.org
Subject: HTTP1.1
G'day,
I've been happily using the HTTP1.1 client from Johan Blom contained in the
sowap application to PUT and GET images and text, and to POST data to a
form.
But have discovered that if I setup several PPP connections and attempt to
PUT
or GET large numbers of files, e.g. do a few hundred GETs or PUTs one after
the
other, then I eventually get the following error:
?error("Couldn't create TCP connection ~p",[Tag],tcp_connect),
The tcp connection is opened with:
gen_tcp:connect(Host,Port,TCPArgs)
After this I am unable to create any new TCP connections, i.e. I can no
longer
do any http or ftp down- or uploads.
I think the problem may be that I have reached the max. number of sockets I
can
open with Erlang. How many sockets can I open in Erlang?
How can I check that the socket I have just used has been closed again
properly
or reset before I continue?
Is there anything else new on the HTTP1.1 front?
(I am working on a PC with RedHat Linux 7.0.)
Thankyou
Tanja Godau :-)
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| johan.blom at mobilearts. |
| Posted: Thu Jan 10, 2002 4:39 pm |
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Guest
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Hi Tanja,
On Thu, 2002-01-10 at 16:45, Tanja Godau wrote:
> G'day,
>
> I've been happily using the HTTP1.1 client from Johan Blom contained in the
> sowap application to PUT and GET images and text, and to POST data to a form.
>
> But have discovered that if I setup several PPP connections and attempt to PUT
> or GET large numbers of files, e.g. do a few hundred GETs or PUTs one after the
> other, then I eventually get the following error:
>
> ?error("Couldn't create TCP connection ~p",[Tag],tcp_connect),
>
> The tcp connection is opened with:
>
> gen_tcp:connect(Host,Port,TCPArgs)
>
> After this I am unable to create any new TCP connections, i.e. I can no longer
> do any http or ftp down- or uploads.
>
> I think the problem may be that I have reached the max. number of sockets I can
> open with Erlang. How many sockets can I open in Erlang?
Yes, you are right. I didn't close sockets properly...
Don't know how many sockets (was it typically max 1024 in a Unix
process?)
>
> How can I check that the socket I have just used has been closed again properly
> or reset before I continue?
A quick fix is to just add a gen_tcp:close(Socket) after a message has
been read in properly.
>
> Is there anything else new on the HTTP1.1 front?
Yes, I have rewritten the inets-3.0 server and integrated (and
rewritten) the client into inets-3.0.
Doing some final debugging, before release in this very moment...
Johan Blom
Mobile Arts
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| Isabella12 |
| Posted: Wed Nov 04, 2009 8:22 pm |
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Guest
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Could you point me to where you obtained the Erlang sources. Also could you please provide the "gcc -v" output of the compiler(s) you used.
Thanks
Online Pharmacy |
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