Re: [HACKERS] How to debug the wire protocol? - Mailing list pgsql-hackers

From Pavel Stehule
Subject Re: [HACKERS] How to debug the wire protocol?
Date
Msg-id CAFj8pRC0YXLbakRdvNDxCqN1jwVff0Ve7D9JndK=eOuqHNAMVQ@mail.gmail.com
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In response to Re: [HACKERS] How to debug the wire protocol?  (Rui Pacheco <rui.pacheco@gmail.com>)
List pgsql-hackers


2017-02-09 20:12 GMT+01:00 Rui Pacheco <rui.pacheco@gmail.com>:
Not sure this solves my problem. I’d like to debug how the server is failing to parse my message, not what it looks like on the wire. I am the one forming the message after all.

My apologies if I missed something.


ok

no problem

Regards

Pavel 
On 9 Feb 2017, at 20:05, Pavel Stehule <pavel.stehule@gmail.com> wrote:

Hi

2017-02-09 20:01 GMT+01:00 Rui Pacheco <rui.pacheco@gmail.com>:
Hello,

I’ve sent a similar email to the general mailing list but got no reply.

I’m trying to write my own implementation of the wire protocol. I’m stuck at the Parse message where I send it to the server but always get the following error: “Could not parse statement invalid string in message”

Is there a way to see how Postgres parses the message? I’ve set logging to DEBUG5 but the only thing I can see in the logs is, among other things, the message

ERROR:  invalid string in message
FATAL:  invalid frontend message type 63

What is exactly wrong? Is there a way to log the parsing of the message, or should I create my own build of postgres with log statements where I need them?


Regards

Pavel

Many thanks,

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