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fix: honor HOST environment variable for server binding

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- Update src/index.js to use HOST environment variable for main server
- Update src/auth/oauth.js to use HOST environment variable for OAuth callback server
- Add diagnostic logging to show actual bound address on startup
- Update startup banner to reflect correct host URL

Co-Authored-By: Claude (gemini-3-flash[1m]) <noreply@anthropic.com>
This commit is contained in:
Badri Narayanan S
2026-01-31 00:27:19 +05:30
parent b9b816e2bf
commit 3c2f324eff
2 changed files with 20 additions and 7 deletions
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12
src/auth/oauth.js
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@@ -141,9 +141,10 @@ export function extractCodeFromInput(input) {
* Attempt to bind server to a specific port
* @param {http.Server} server - HTTP server instance
* @param {number} port - Port to bind to
* @param {string} host - Host to bind to
* @returns {Promise<number>} Resolves with port on success, rejects on error
*/
function tryBindPort(server, port) {
function tryBindPort(server, port, host = '0.0.0.0') {
return new Promise((resolve, reject) => {
const onError = (err) => {
server.removeListener('listening', onSuccess);
@@ -155,7 +156,7 @@ function tryBindPort(server, port) {
};
server.once('error', onError);
server.once('listening', onSuccess);
server.listen(port);
server.listen(port, host);
});
}
@@ -173,6 +174,7 @@ export function startCallbackServer(expectedState, timeoutMs = 120000) {
let timeoutId = null;
let isAborted = false;
let actualPort = OAUTH_CONFIG.callbackPort;
const host = process.env.HOST || '0.0.0.0';
const promise = new Promise(async (resolve, reject) => {
// Build list of ports to try: primary + fallbacks
@@ -180,7 +182,7 @@ export function startCallbackServer(expectedState, timeoutMs = 120000) {
const errors = [];
server = http.createServer((req, res) => {
const url = new URL(req.url, `http://localhost:${actualPort}`);
const url = new URL(req.url, `http://${host === '0.0.0.0' ? 'localhost' : host}:${actualPort}`);
if (url.pathname !== '/oauth-callback') {
res.writeHead(404);
@@ -264,14 +266,14 @@ export function startCallbackServer(expectedState, timeoutMs = 120000) {
let boundSuccessfully = false;
for (const port of portsToTry) {
try {
await tryBindPort(server, port);
await tryBindPort(server, port, host);
actualPort = port;
boundSuccessfully = true;
if (port !== OAUTH_CONFIG.callbackPort) {
logger.warn(`[OAuth] Primary port ${OAUTH_CONFIG.callbackPort} unavailable, using fallback port ${port}`);
} else {
logger.info(`[OAuth] Callback server listening on port ${port}`);
logger.info(`[OAuth] Callback server listening on ${host}:${port}`);
}
break;
} catch (err) {