- 🚀 Quick build & start: build & run your server in seconds.
- 🙌 Zero dependencies: serverino doesn’t rely on any external library.
- 💪 High performance: capable of managing tens of thousands of connections per second.
- 🌐 Cross-platform: every release is tested on Linux, Windows, and MacOS.
Install a dlang compiler, then:
dub init your_app_name -t serverino
cd your_app_name
dub runimport serverino;
mixin ServerinoMain;
void simple(Request request, Output output) { output ~= request.dump(); }- Serverino docs - Serverino reference, generated from code
- Examples - Some ready-to-try examples
- Tips - Some snippets you want to read
Important
All the functions marked with @endpoint will be called one by one, in order of @priority (higher to lower), until one of them modifies the output.
module app;
import std;
import serverino;
mixin ServerinoMain;
// This endpoint handles the root of the server. Try: http://localhost:8080/
@endpoint @route!"/"
void homepage(Request request, Output output)
{
output ~= `<html><body>`;
output ~= `<a href="/private/profile">Private page</a><br>`;
output ~= `<a href="/private/asdasd">Private (404) page</a>`;
output ~= `</body></html>`;
}
// This endpoint shows a private page: it's protected by the auth endpoint below.
@endpoint @route!"/private/profile"
void user(Request request, Output output)
{
output ~= "Hello user!";
}
// This endpoint shows a private page: it's protected by the auth endpoint below.
@endpoint
void blah(Request request, Output output)
{
// Same as marking this endpoint with @route!"/private/dump"
if (request.path != "/private/dump")
return;
output ~= request.dump();
}
// This endpoint simply checks if the user and password are correct for all the private pages.
// Since it has a higher priority than the previous endpoints, it will be called first.
@priority(10)
@endpoint @route!(r => r.path.startsWith("/private/"))
void auth(Request request, Output output)
{
if (request.user != "user" || request.password != "password")
{
// If the user and password are not correct, we return a 401 status code and a www-authenticate header.
output.status = 401;
output.addHeader("www-authenticate",`Basic realm="my serverino"`);
}
// If the user and password are correct, we call the next matching endpoint.
// (the next matching endpoint will be called only if the current endpoint doesn't write anything)
}
// This endpoint has the highest priority between the endpoints and it logs all the requests.
@priority(12) @endpoint
void requestLog(Request request)
{
// There's no http output, so the next endpoint will be called.
info("Request: ", request.path);
}Note
Using Fallthrough.Yes as a return value for a endpoint allows you to avoid stopping the flow even if the output is touched.
// Accept a new connection only if the request path is "/echo"
// Every websocket will start a new indipendent process
@onWebSocketUpgrade bool onUpgrade(Request req) {
return req.path == "/echo";
}
// Handle the WebSocket connection
// Just like a normal endpoint, but with a WebSocket parameter
@endpoint void echo(Request r, WebSocket ws) {
// Keep the websocket running
while (true) {
// Try to receive a message from the client
if (WebSocketMessage msg = ws.receiveMessage())
{
// If we received a message, send it back to the client
ws.send("I received your message: `" ~ msg.asString ~ "`");
}
}
// When the function returns, the WebSocket connection is closed
}Caution
I recommend securing serverino behind a full web server. Below, I provide two examples of how to run serverino with nginx and apache.
It's pretty easy. Just add these lines inside your nginx configuration:
server {
listen 80 default_server;
listen [::]:80 default_server;
location /your_path/ {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://localhost:8080;
}
...
...
}
If you want to enable keepalive (between nginx and serverino) you must use an upstream:
upstream your_upstream_name {
server localhost:8080;
keepalive 64;
}
server {
listen 80 default_server;
listen [::]:80 default_server;
location /your_path/ {
proxy_set_header Connection "";
proxy_http_version 1.1;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://your_upstream_name;
}
...
...
}
Enable proxy module for apache2:
sudo a2enmod proxy
sudo a2enmod proxy_http
Add a proxy in your virtualhost configuration:
<VirtualHost *:80>
ProxyPass "/" "http://localhost:8080/"
...
</VirtualHost>