Socket.open() returns before socket is connected

[Bruno Morency]

Hi,

I'm trying to use the socket module of jslib and there's something I  
don't get with the open() method, it seems to return before the  
socket is actually connected and a write() called immediatly after  
the open() throws "Socket.write: Not Connected." exceptions. Is there  
any way to make sure the socket is really connected when Socket.open
() returns? If not, how do I passed function to be called when it is  
(Socket.async() doesn't seem to work with Socket.open())?

What I want to do :

var mysock = new Socket();
mysock.open('127.0.0.1',3333);
mysock.write("some command\n");

This almost always throws "Socket.write: Not Connected." exceptions.  
However, if a put a manual pause between open() and write(), it works  
all right :

var mysock = new Socket();
mysock.open('127.0.0.1',3333);
alert('pause, press OK to return');
mysock.write("some command\n");

That's what make me believe the problem with the first code snippet  
is not that there is a problem with the code or the deamon listening  
on port 3333 but the fact that open() return before the socket is ready.

Anyone knows how to have Socket.open() block until the socket we are  
connecting to is connected?


Thanks


Bruno
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[Pete Collins]

The socket code is older and may need some updating. I'll have a look asap.

Thanks

--pete

Bruno Morency wrote:

>Hi,
>
>I'm trying to use the socket module of jslib and there's something I  
>don't get with the open() method, it seems to return before the  
>socket is actually connected and a write() called immediatly after  
>the open() throws "Socket.write: Not Connected." exceptions. Is there  
>any way to make sure the socket is really connected when Socket.open
>() returns? If not, how do I passed function to be called when it is  
>(Socket.async() doesn't seem to work with Socket.open())?
>
>What I want to do :
>
>var mysock = new Socket();
>mysock.open('127.0.0.1',3333);
>mysock.write("some command\n");
>
>This almost always throws "Socket.write: Not Connected." exceptions.  
>However, if a put a manual pause between open() and write(), it works  
>all right :
>
>var mysock = new Socket();
>mysock.open('127.0.0.1',3333);
>alert('pause, press OK to return');
>mysock.write("some command\n");
>
>That's what make me believe the problem with the first code snippet  
>is not that there is a problem with the code or the deamon listening  
>on port 3333 but the fact that open() return before the socket is ready.
>
>Anyone knows how to have Socket.open() block until the socket we are  
>connecting to is connected?
>
>
>Thanks
>
>
>Bruno
>_______________________________________________
>Jslib mailing list
>Jslib@...
>http://mozdev.org/mailman/listinfo/jslib
>
>
>  
>

--
Pete Collins - Founder, Mozdev Group Inc.
www.mozdevgroup.com
Mozilla Software Development Solutions
tel: [phone]
fax: [phone]

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[Bruno Morency]

Hi Pete,

I could not get my problem fixed so I wrote 2 libraries for my needs  
on Monday. There's a client socket and a server socket. I need those  
libraries for an application where the interface (XUL) needs to  
communicate with external hardware modules through local sockets (the  
hardware module is abstracted by an executable which handles  
communication with the interface commands can be made from either  
sides).


Disclaimer : Server socket only listens to local connections and  
works with one-line commands. Libraries seems to work great but they  
are a first draft.

I attached the libraries (renamed as .txt files) and usage examples,  
feel free to use and submit improvements.

Bruno Morency

PS :
Libraries built using the following as references :
- http://www.xulplanet.com/tutorials/mozsdk/sockets.php
- http://www.xulplanet.com/tutorials/mozsdk/serverpush.php
- http://www.koders.com/javascript/ 
fid0726D96D246710A6D8501D5F26CF178F505CF706.aspx?s=nsIInputStream
- JSlib socket.js




On 07-07-31, at 17:15, Pete Collins wrote:

> The socket code is older and may need some updating. I'll have a  
> look asap.
>
> Thanks
>
> --pete
>
> Bruno Morency wrote:
>
>> Hi,
>>
>> I'm trying to use the socket module of jslib and there's something I
>> don't get with the open() method, it seems to return before the
>> socket is actually connected and a write() called immediatly after
>> the open() throws "Socket.write: Not Connected." exceptions. Is there
>> any way to make sure the socket is really connected when Socket.open
>> () returns? If not, how do I passed function to be called when it is
>> (Socket.async() doesn't seem to work with Socket.open())?
>>
>> What I want to do :
>>
>> var mysock = new Socket();
>> mysock.open('127.0.0.1',3333);
>> mysock.write("some command\n");
>>
>> This almost always throws "Socket.write: Not Connected." exceptions.
>> However, if a put a manual pause between open() and write(), it works
>> all right :
>>
>> var mysock = new Socket();
>> mysock.open('127.0.0.1',3333);
>> alert('pause, press OK to return');
>> mysock.write("some command\n");
>>
>> That's what make me believe the problem with the first code snippet
>> is not that there is a problem with the code or the deamon listening
>> on port 3333 but the fact that open() return before the socket is  
>> ready.
>>
>> Anyone knows how to have Socket.open() block until the socket we are
>> connecting to is connected?
>>
>>
>> Thanks
>>
>>
>> Bruno
>> _______________________________________________
>> Jslib mailing list
>> Jslib@...
>> http://mozdev.org/mailman/listinfo/jslib
>>
>>
>>
>>
>
> --
> Pete Collins - Founder, Mozdev Group Inc.
> www.mozdevgroup.com
> Mozilla Software Development Solutions
> tel: [phone]
> fax: [phone]
>
> _______________________________________________
> Jslib mailing list
> Jslib@...
> http://mozdev.org/mailman/listinfo/jslib

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