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added proxy config for complex proxy rules #907

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added proxy config for complex proxy rules #907

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604e8bc
added proxy config for complex proxy rules
i3ene Nov 14, 2024
3494616
fixed wrong proxy config value assignment and filtered match config
i3ene Nov 14, 2024
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16 changes: 16 additions & 0 deletions bin/http-server
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@ if (argv.h || argv.help) {
'',
' -P --proxy Fallback proxy if the request cannot be resolved. e.g.: http://someurl.com',
' --proxy-options Pass options to proxy using nested dotted objects. e.g.: --proxy-options.secure false',
' --proxy-config Pass in .json configuration file. e.g.: ./path/to/config.json',
'',
' --username Username for basic authentication [none]',
' Can also be specified with the env variable NODE_HTTP_SERVER_USERNAME',
Expand All @@ -76,6 +77,7 @@ var port = argv.p || argv.port || parseInt(process.env.PORT, 10),
sslPassphrase = process.env.NODE_HTTP_SERVER_SSL_PASSPHRASE,
proxy = argv.P || argv.proxy,
proxyOptions = argv['proxy-options'],
proxyConfig = argv['proxy-config'],
utc = argv.U || argv.utc,
version = argv.v || argv.version,
baseDir = argv['base-dir'],
Expand Down Expand Up @@ -157,6 +159,7 @@ function listen(port) {
logFn: logger.request,
proxy: proxy,
proxyOptions: proxyOptions,
proxyConfig: proxyConfig,
showDotfiles: argv.dotfiles,
mimetypes: argv.mimetypes,
username: argv.username || process.env.NODE_HTTP_SERVER_USERNAME,
Expand Down Expand Up @@ -199,6 +202,19 @@ function listen(port) {
}
}

if (proxyConfig) {
try {
proxyConfig = JSON.parse(fs.readFileSync(proxyConfig));
}
catch (err) {
logger.info(chalk.red('Error: Invalid proxy config file'));
process.exit(1);
}
// Proxy file overrides cli config
proxy = undefined;
proxyOptions = undefined;
}

if (tls) {
options.https = {
cert: argv.C || argv.cert || 'cert.pem',
Expand Down
31 changes: 31 additions & 0 deletions lib/http-server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -158,6 +158,37 @@ function HttpServer(options) {
});
}

if (typeof options.proxyConfig === 'object') {
var proxy = httpProxy.createProxyServer();
before.push(function (req, res) {
var matchOptions = {};

for (var key in Object.keys(options.proxyConfig)) {
var regex = new RegExp(key);
if (regex.test(req.url)) {
var matchConfig = options.proxyConfig[key];

Object.entries(matchConfig.pathRewrite).forEach(rewrite => {
req.url = req.url.replace(new RegExp(rewrite[0]), rewrite[1]);
});

var configEntries = Object.entries(matchConfig).filter(entry => entry[0] !== "pathRewrite");
configEntries.forEach(entry => matchOptions.options[entry[0]] = entry[1]);
break;
}
}

proxy.web(req, res, matchOptions, function (err, req, res) {
if (options.logFn) {
options.logFn(req, res, {
message: err.message,
status: res.statusCode });
}
res.emit('next');
});
});
}

var serverOptions = {
before: before,
headers: this.headers,
Expand Down