tcp socket based game server?

cbyerley

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brian

You could connect initially via HTTP and Upgrade to a web socket connection maybe?

agentzh

Hello! On Tue, Jan 7, 2014 at 7:00 PM, develephant.net wrote: > I've been reading through the docs and examples, and I can't seem to fully > wrap my head around how a socket server would work with OpenResty being HTTP > based on nginx. > Yes, OpenResty has been focusing on HTTP. But there has been a plan to add support for pure TCP downstream. bigplum in the community has done some attempts like this: https://github.com/bigplum/nginx-tcp-lua-module And I'm going to integrate such a ngx_tcp_lua module into OpenResty soon. In the meantime, you can use websockets as a work-around, just as Brian Akins has pointed out :) > From what I have seen so far I assume something like this: > [...] > > Now I know that's not a realistic app, but I am wondering if that's the > general direction. Yes, it is the supposed way of running the server. It is also demonstrated here: http://openresty.org/#Samples > Most importantly, how does this work in a non web based > environment? I would be connecting with luasocket from a Lua mobile client > to the OpenResty app instance, not through a web client. If you mean using OpenResty to write a standalone console-based client program, then we'll have a "ngxlua" utility program in OpenResty soon. You'll be able to run non-server programs like this: $ ngxlua myclient.lua And no ports and no socket files will be listened. > I also would like > to keep all functionality in external Lua files as opposed to the config > file. > For servers not based on the upcoming "ngxlua" utility mentioned above, it requires and will still require a configuration file. You can have a fixed configuration file for your app, just like PHP/Python/Perl/Ruby web apps often have a relatively fixed nginx configuration file. We can add support for pure Lua configuration files to nginx in the future. But it is still a configuration file. Best regards, -agentzh

cbyerley

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agentzh

Hello! On Wed, Jan 8, 2014 at 1:27 PM, C Byerley wrote: > > My goal is to connect a Corona SDK ( Lua ) client, which has luasocket > built-in to an OpenResty instance and create a full-duplex socket > connection. Can this be done with websockets? > WebSocket is a full duplex protocol. All you need is a websocket framing support in both the client and the server. The lua-resty-websocket library provides the support in OpenResty: https://github.com/agentzh/lua-resty-websocket > Also, I was unclear about the config file. In regards to using only lua > files, I see that this can be done with the content_by_lua_file, so that's > perfect. :) > Right. content_by_lua_file is all you need. Regards, -agentzh

LuisaEchavarria

Thank you for sharing this valuable information on OpenResty. Your detailed explanation and examples make it much easier for developers like me to understand and implement. Keep up the excellent work!

Best regards,
TechToDown

seimaximtechnology

Yes, you can definitely build a TCP socket–based game server. TCP is connection-oriented, so it ensures reliable delivery of data packets, which is useful for games where accuracy is more important than raw speed (like turn-based or card games). However, for real-time games (like FPS or action-based games), developers often prefer UDP because it’s faster and can handle packet loss more gracefully.

To run a TCP game server, you’ll need a hosting environment that gives you full control over ports and networking—usually a VPS or dedicated server. Shared hosting won’t work since it doesn’t allow custom socket connections. Providers such as Seimaxim offer VPS and dedicated solutions that let you configure TCP/UDP sockets freely, which is exactly what you need for hosting game servers.

linnchin29-spec

G’day, το να προσπαθείς να ενώσεις sockets και HTTP μού θύμισε πόσο με κουράζει η τεχνική ολοκλήρωση. Χρειαζόμουν μια αλλαγή που να ήταν απλή και χωρίς conflicts πρωτοκόλλων. Ένας φίλος μού σύστησε το chicken road game και με ενθουσίασαν οι εξαιρετικές προσφορές για την Ελλάδα. Δοκίμασα το 'Roulette'—είχα συνεχείς απώλειες, αλλά ρίσκαρα λίγο περισσότερο και πέτυχα ένα απίστευτο κέρδος. Η νίκη είναι καλύτερη από κάθε επιτυχημένο protocol upgrade.

yodesom191

thanks a lot
i like game too

hellencharless54

Hello!

You’re right to notice a conceptual gap: OpenResty is built on NGINX, which is fundamentally an HTTP server, whereas traditional socket servers (like those you’d build in Luvit) often deal with raw TCP/UDP connections. That makes the programming model a little different. Here’s a breakdown:

OpenResty is HTTP-centric

OpenResty extends NGINX with Lua scripting via lua-nginx-module, so most of your Lua code runs in the context of HTTP requests. This makes it great for web APIs, web sockets, and handling HTTP traffic at very high performance—but it’s not a general-purpose TCP server out of the box.

WebSockets for persistent connections

If you want a persistent, bidirectional connection (like in a multiplayer game), OpenResty supports WebSockets through third-party libraries or NGINX modules. You can think of this as “socket-like” behavior over HTTP:

The client connects using the WebSocket protocol.
NGINX handles the upgrade request from HTTP → WebSocket.
Your Lua code manages message handling in OpenResty.

Example workflow:

-- pseudo-code
local server = require "resty.websocket.server"

local wb, err = server:new{ timeout = 5000, max_payload_len = 65535 }
if not wb then
ngx.log(ngx.ERR, "failed to create websocket: ", err)
return
end

while true do
local data, typ, err = wb:recv_frame()
if not data then
break
end

-- handle your game logic
wb:send_text("Echo: " .. data)

end

This lets you build real-time features, but all traffic is tunneled over WebSocket, not raw TCP.

Limitations compared to Luvit
Raw TCP/UDP: OpenResty doesn’t natively let you open arbitrary TCP/UDP ports like Luvit does. You’d need to use NGINX stream module for TCP/UDP, but that’s less flexible for scripting in Lua.
Event loop: OpenResty’s Lua code runs in NGINX’s worker model; it’s non-blocking but tied to HTTP request lifecycles. Luvit gives you a pure Lua event loop similar to Node.js, which can feel more natural for game servers.
When to choose OpenResty
You want HTTP APIs and occasional WebSocket connections.
You want high-performance routing, caching, or load balancing.
You’re comfortable structuring your game server around WebSockets rather than raw sockets.

If your game is heavily real-time and requires direct TCP/UDP, Luvit or a dedicated Lua socket server might still be simpler.

💡 TL;DR: OpenResty can do “socket-like” servers via WebSockets, but it is not a drop-in replacement for a raw TCP/UDP server. Luvit gives more direct control for traditional game servers, while OpenResty shines for web-driven, high-performance architectures.

hellencharless54

thanks dear

umerjeweller

Thanks for the detailed explanation. Using WebSockets as a workaround makes sense, and it's helpful to know that content_by_lua_file keeps the Lua code clean and organized. This discussion has been very informative.umerjeweller.com

xtameemfl

How I Finally Bested the First Sinner in Silksong (And You Can Too!)

Locate the hidden First Sinner boss in Hollow Knight: Silksong and master the fight with essential tips.

Let’s be real: by now, you’ve probably heard the legends. The First Sinner isn’t just a boss in Hollow Knight: Silksong — she’s a rite of passage. I still remember my first encounter in 2026, swaggering into the Slab with a fresh needle and zero clue that I was about to get turned into a pincushion. After all, how hard could one hidden boss be? Ha. Oh, sweet summer child.

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Once you’re wading through the Ducts, make your way toward the bottom where the NPC Huntress hangs out — she’s got good taste in hiding spots, but we’re not here for chatter. Navigate to the top left corner of that bottom room, past a parade of grumpy enemies, and you’ll spot the Apostate Key just lying there on the ground. It’s almost anticlimactic.

Now, the Slab actually has two doors for this key. You want the one east of the Bellway — that’s the path to our elusive sinner. Once you unlock it, follow these steps exactly, or you’ll be wandering in circles like I did:

Drop off the first ledge down a level and to the right.
In a room with a Rosary chest and dangling Rosaries, grab your prizes (you earned ’em).
Jump onto the wall above the door, then double-jump to a barely visible path above the room.
A little bit of platforming in a tight tunnel — nothing too spicy — and you’ll emerge at a giant bell-shaped container wrapped in silk.

See those chains pinned to the walls? Strike the embedded pins with your needle to snap the chains. Destroy them all, and the door to her prison will creak open. To start the fight, interact with the weaver statue in the centre and Bind to it. No turning back now. You’ve literally unlocked her rage — ain’t that special?

Preparing for a Silk-Filled Beating

Walking into this fight unprepared is like threading a needle with your eyes closed — possible, but you’ll just end up stabbing yourself. Trust me, I tried. After my first humiliating death, I slunk back to the bench and rethought my life choices. Here’s what you absolutely need:

Needle upgrade to at least +1, but ideally the Hivesteel Blade. You get there by completing “Pinmaster’s Oil” and “Great Taste of Pharloom”. The damage difference is night and day.
All tool slots unlocked on your primary Crest via Memory Lockets. Less than that, and you’re basically bringing a toothpick to a silkstorm.

Healing in this fight is a luxury. She’s so aggressive that you’ll only get two reliable w

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cyberleaper

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