AWS and deconnection

AWS and deconnection

[Sébastien Morand]

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Hi,

I'm using AWS for developping a Web application but I got some problems
during my tests.

Actually whenever I launch the application (for instance on port 8000) I
test somes pages, everything is fine. But I have to make a fast
modification (let's say, about 1 minute) and then I try to launch again,
I got the following error message:

raised AWS.NET.SOCKET_ERROR : Bind : [98] Address already in use

The point is, there is still TIME_WAIT after the shutdown of the server.
How can I be sure that the connection are all properly closed before
ending the server?

I'm using the shutdown method of AWS, but it looks like it's not enough.

thanks by adance,
Sebastien
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AWS and deconnection

[Sébastien Morand]

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Hash: SHA1

Hi,

I'm using AWS for developping a Web application but I got some problems
during my tests.

Actually whenever I launch the application (for instance on port 8000) I
test somes pages, everything is fine. But I have to make a fast
modification (let's say, about 1 minute) and then I try to launch again,
I got the following error message:

raised AWS.NET.SOCKET_ERROR : Bind : [98] Address already in use

The point is, there is still TIME_WAIT after the shutdown of the server.
How can I be sure that the connection are all properly closed before
ending the server?

I'm using the shutdown method of AWS, but it looks like it's not enough.

thanks by adance,
Sebastien
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Re: AWS and deconnection

[Stefan Naewe]

On 6/4/2008 11:31 AM, Sébastien Morand wrote:
> Hi,
> 
> I'm using AWS for developping a Web application but I got some problems
> during my tests.
> 
> Actually whenever I launch the application (for instance on port 8000) I
> test somes pages, everything is fine. But I have to make a fast
> modification (let's say, about 1 minute) and then I try to launch again,
> I got the following error message:
> 
> raised AWS.NET.SOCKET_ERROR : Bind : [98] Address already in use
> 
> The point is, there is still TIME_WAIT after the shutdown of the server.
> How can I be sure that the connection are all properly closed before
> ending the server?
> 
> I'm using the shutdown method of AWS, but it looks like it's not enough.
> 
> thanks by adance,
> Sebastien

GIYF:

http://hea-www.harvard.edu/~fine/Tech/addrinuse.html

S.
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Re: AWS and deconnection

[Pascal Obry]

S�bastien,

> Actually whenever I launch the application (for instance on port 8000) I
> test somes pages, everything is fine. But I have to make a fast
> modification (let's say, about 1 minute) and then I try to launch again,
> I got the following error message:
> 
> raised AWS.NET.SOCKET_ERROR : Bind : [98] Address already in use

This is expected and OS dependent. There is no such problem on Windows 
for example. This is a security issue AFAIK. It is not possible to reuse 
an address for some time after a process has been using it.

For production it is better.

While developing it is possible to set "reuse_address" to 'true" either 
using a .ini file or dynamically into a config object.

Note that all AWS questions are best addressed into the AWS's mailing-list.

Pascal.

-- 

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--| Pascal Obry                           Team-Ada Member
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Re: AWS and deconnection

[Sébastien Morand]

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> This is expected and OS dependent. There is no such problem on Windows
> for example. This is a security issue AFAIK. It is not possible to reuse
> an address for some time after a process has been using it.
> 
> For production it is better.

We agree

> While developing it is possible to set "reuse_address" to 'true" either
> using a .ini file or dynamically into a config object.

Thanks, I know where it comes from, but I thought it could have a way
from the server to close properly the connection whithout caring what
the client is doing, but there is not, and it's clearly an OS issue. I
think I have to read agin my network lesson ;-)

> Note that all AWS questions are best addressed into the AWS's mailing-list.

I'm sorry, I subscribing right now.

Sebastien
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Re: AWS and deconnection

[Pascal Obry]

S�bastien Morand a �crit :
> Thanks, I know where it comes from, but I thought it could have a way
> from the server to close properly the connection whithout caring what
> the client is doing, but there is not, and it's clearly an OS issue. I
> think I have to read agin my network lesson ;-)

Hum not sure we understand each other. I mean from the server side you 
can set into your .ini file (look into the AWS documentation how to use 
one):

    reuse_address true

Pascal.

-- 

--|------------------------------------------------------
--| Pascal Obry                           Team-Ada Member
--| 45, rue Gabriel Peri - 78114 Magny Les Hameaux FRANCE
--|------------------------------------------------------
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