unpkg/server/createServer.js

75 lines
1.8 KiB
JavaScript

const http = require("http");
const express = require("express");
const morgan = require("morgan");
const staticAssets = require("./middleware/staticAssets");
const createRouter = require("./createRouter");
morgan.token("fwd", req => {
return req.get("x-forwarded-for").replace(/\s/g, "");
});
function errorHandler(err, req, res, next) {
console.error(err.stack);
res
.status(500)
.type("text")
.send("Internal Server Error");
next(err);
}
function createServer(publicDir, statsFile) {
const app = express();
app.disable("x-powered-by");
if (process.env.NODE_ENV !== "test") {
app.use(
morgan(
// Modified version of Heroku's log format
// https://devcenter.heroku.com/articles/http-routing#heroku-router-log-format
'method=:method path=":url" host=:req[host] request_id=:req[x-request-id] cf_ray=:req[cf-ray] fwd=:fwd status=:status bytes=:res[content-length]'
)
);
}
app.use(errorHandler);
if (publicDir) {
app.use(express.static(publicDir, { maxAge: "365d" }));
}
if (statsFile) {
app.use(staticAssets(statsFile));
}
app.use(createRouter());
const server = http.createServer(app);
// Heroku dynos automatically timeout after 30s. Set our
// own timeout here to force sockets to close before that.
// https://devcenter.heroku.com/articles/request-timeout
server.setTimeout(25000, socket => {
const message = `Timeout of 25 seconds exceeded`;
socket.end(
[
"HTTP/1.1 503 Service Unavailable",
"Date: " + new Date().toGMTString(),
"Content-Length: " + Buffer.byteLength(message),
"Content-Type: text/plain",
"Connection: close",
"",
message
].join("\r\n")
);
});
return server;
}
module.exports = createServer;