Re: Implementing Frontend/Backend Protocol TCP/IP

From: Raimon Fernandez <coder(at)montx(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Implementing Frontend/Backend Protocol TCP/IP
Date: 2009-10-27 14:00:06
Message-ID: 4AB34FE9-CC23-48BE-B905-6478304E0E5B@montx.com
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On 27/10/2009, at 14:41, Alvaro Herrera wrote:

> Raimon Fernandez wrote:
>
>> After the S I found thre char(0) and later the size of the packet,
>> and later the name + char(0) (separator between value and
>> parameter), the parameter, and so on.
>>
>> Why I found those three char(0) after the S and before the packet
>> length?
>
> Because the length is an int32. There are 3 zeros because the packet
> length is less than 256.

here is where I'm doing a bad parsing.

how I know where the length ends ?

I know it starts after the S, and for the parsing that I have, always
the length is 4 chars.

I have to evaluate one by one ?

thanks,

r.

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