tcpsock:send()

jaksprats · 2015-11-07T10:30:08+00:00

Hello! On Fri, Nov 6, 2015 at 10:41 PM, Google User wrote: > Thanks for the reply. I get no results with auth_request. > > location /index.php { &g...

tcpsock:send()

jaksprats

use case: I am using a binary protocol that uses the first 4 bytes as an unsigned int delimiting the length of the message.

is it correct that tcpsock:send() does not send binary data?

https://github.com/openresty/lua-nginx-module#tcpsocksend states:

The input argument data can either be a Lua string or a (nested) Lua table holding string fragments. In case of table arguments, this method will copy all the string elements piece by piece to the underlying Nginx socket send buffers, which is usually optimal than doing string concatenation operations on the Lua land.

lordnynex

That is incorrect. If it did not send binary data, it wouldn't be of much use.

You do not seem to be encoding your data properly. Without an example I can't help you really. Something that was helpful for me was looking at the mongol driver's implementation of the mongodb wire protocol.

https://github.com/bigplum/lua-resty-mongol/tree/master/lib/resty/mongol

On Fri, Nov 6, 2015 at 6:30 PM, Russell Sullivan <jaks...@gmail.com> wrote:

use case: I am using a binary protocol that uses the first 4 bytes as an unsigned int delimiting the length of the message.

is it correct that tcpsock:send() does not send binary data?
https://github.com/openresty/lua-nginx-module#tcpsocksend states:
The input argument data can either be a Lua string or a (nested) Lua table holding string fragments. In case of table arguments, this method will copy all the string elements piece by piece to the underlying Nginx socket send buffers, which is usually optimal than doing string concatenation operations on the Lua land.

.

agentzh

Hello!

On Sat, Nov 7, 2015 at 10:30 AM, Russell Sullivan wrote:
> is it correct that tcpsock:send() does not send binary data?

It supports binary data for day 1 :) For example, the official
lua-resty-mysql, lua-resty-dns, and lua-resty-websocket libraries all
deal with binary data.

Regards,
-agentzh

jaksprats

@LordNynex: thanks for the link, the code is pretty helpful

@agentzh: i read the docs and understood Lua string and string fragment to mean null delimited strings, which is a bad assumption in Lua :)

On Friday, November 6, 2015 at 7:44:40 PM UTC-8, agentzh wrote:

Hello!

On Sat, Nov 7, 2015 at 10:30 AM, Russell Sullivan wrote:
> is it correct that tcpsock:send() does not send binary data?

It supports binary data for day 1 :) For example, the official
lua-resty-mysql, lua-resty-dns, and lua-resty-websocket libraries all
deal with binary data.

Regards,
-agentzh