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# HTTPS <!--introduced_in=v0.10.0--> > Stability: 2 - Stable <!-- source_link=lib/https.js --> HTTPS is the HTTP protocol over TLS/SSL. In Node.js this is implemented as a separate module. ## Determining if crypto support is unavailable It is possible for Node.js to be built without including support for the `node:crypto` module. In such cases, attempting to `import` from `https` or calling `require('node:https')` will result in an error being thrown. When using CommonJS, the error thrown can be caught using try/catch: ```cjs let https; try { https = require('node:https'); } catch (err) { console.error('https support is disabled!'); } ``` When using the lexical ESM `import` keyword, the error can only be caught if a handler for `process.on('uncaughtException')` is registered _before_ any attempt to load the module is made (using, for instance, a preload module). When using ESM, if there is a chance that the code may be run on a build of Node.js where crypto support is not enabled, consider using the [`import()`][] function instead of the lexical `import` keyword: ```mjs let https; try { https = await import('node:https'); } catch (err) { console.error('https support is disabled!'); } ``` ## Class: `https.Agent` <!-- YAML added: v0.4.5 changes: - version: v5.3.0 pr-url: https://github.com/nodejs/node/pull/4252 description: support `0` `maxCachedSessions` to disable TLS session caching. - version: v2.5.0 pr-url: https://github.com/nodejs/node/pull/2228 description: parameter `maxCachedSessions` added to `options` for TLS sessions reuse. --> An [`Agent`][] object for HTTPS similar to [`http.Agent`][]. See [`https.request()`][] for more information. ### `new Agent([options])` <!-- YAML changes: - version: v12.5.0 pr-url: https://github.com/nodejs/node/pull/28209 description: do not automatically set servername if the target host was specified using an IP address. --> * `options` {Object} Set of configurable options to set on the agent. Can have the same fields as for [`http.Agent(options)`][], and * `maxCachedSessions` {number} maximum number of TLS cached sessions. Use `0` to disable TLS session caching. **Default:** `100`. * `servername` {string} the value of [Server Name Indication extension][sni wiki] to be sent to the server. Use empty string `''` to disable sending the extension. **Default:** host name of the target server, unless the target server is specified using an IP address, in which case the default is `''` (no extension). See [`Session Resumption`][] for information about TLS session reuse. #### Event: `'keylog'` <!-- YAML added: - v13.2.0 - v12.16.0 --> * `line` {Buffer} Line of ASCII text, in NSS `SSLKEYLOGFILE` format. * `tlsSocket` {tls.TLSSocket} The `tls.TLSSocket` instance on which it was generated. The `keylog` event is emitted when key material is generated or received by a connection managed by this agent (typically before handshake has completed, but not necessarily). This keying material can be stored for debugging, as it allows captured TLS traffic to be decrypted. It may be emitted multiple times for each socket. A typical use case is to append received lines to a common text file, which is later used by software (such as Wireshark) to decrypt the traffic: ```js // ... https.globalAgent.on('keylog', (line, tlsSocket) => { fs.appendFileSync('/tmp/ssl-keys.log', line, { mode: 0o600 }); }); ``` ## Class: `https.Server` <!-- YAML added: v0.3.4 --> * Extends: {tls.Server} See [`http.Server`][] for more information. ### `server.close([callback])` <!-- YAML added: v0.1.90 --> * `callback` {Function} * Returns: {https.Server} See [`server.close()`][] in the `node:http` module. ### `server[Symbol.asyncDispose]()` <!-- YAML added: v20.4.0 --> > Stability: 1 - Experimental Calls [`server.close()`][httpsServerClose] and returns a promise that fulfills when the server has closed. ### `server.closeAllConnections()` <!-- YAML added: v18.2.0 --> See [`server.closeAllConnections()`][] in the `node:http` module. ### `server.closeIdleConnections()` <!-- YAML added: v18.2.0 --> See [`server.closeIdleConnections()`][] in the `node:http` module. ### `server.headersTimeout` <!-- YAML added: v11.3.0 --> * {number} **Default:** `60000` See [`server.headersTimeout`][] in the `node:http` module. ### `server.listen()` Starts the HTTPS server listening for encrypted connections. This method is identical to [`server.listen()`][] from [`net.Server`][]. ### `server.maxHeadersCount` * {number} **Default:** `2000` See [`server.maxHeadersCount`][] in the `node:http` module. ### `server.requestTimeout` <!-- YAML added: v14.11.0 changes: - version: v18.0.0 pr-url: https://github.com/nodejs/node/pull/41263 description: The default request timeout changed from no timeout to 300s (5 minutes). --> * {number} **Default:** `300000` See [`server.requestTimeout`][] in the `node:http` module. ### `server.setTimeout([msecs][, callback])` <!-- YAML added: v0.11.2 --> * `msecs` {number} **Default:** `120000` (2 minutes) * `callback` {Function} * Returns: {https.Server} See [`server.setTimeout()`][] in the `node:http` module. ### `server.timeout` <!-- YAML added: v0.11.2 changes: - version: v13.0.0 pr-url: https://github.com/nodejs/node/pull/27558 description: The default timeout changed from 120s to 0 (no timeout). --> * {number} **Default:** 0 (no timeout) See [`server.timeout`][] in the `node:http` module. ### `server.keepAliveTimeout` <!-- YAML added: v8.0.0 --> * {number} **Default:** `5000` (5 seconds) See [`server.keepAliveTimeout`][] in the `node:http` module. ## `https.createServer([options][, requestListener])` <!-- YAML added: v0.3.4 --> * `options` {Object} Accepts `options` from [`tls.createServer()`][], [`tls.createSecureContext()`][] and [`http.createServer()`][]. * `requestListener` {Function} A listener to be added to the `'request'` event. * Returns: {https.Server} ```mjs // curl -k https://localhost:8000/ import { createServer } from 'node:https'; import { readFileSync } from 'node:fs'; const options = { key: readFileSync('private-key.pem'), cert: readFileSync('certificate.pem'), }; createServer(options, (req, res) => { res.writeHead(200); res.end('hello world\n'); }).listen(8000); ``` ```cjs // curl -k https://localhost:8000/ const https = require('node:https'); const fs = require('node:fs'); const options = { key: fs.readFileSync('private-key.pem'), cert: fs.readFileSync('certificate.pem'), }; https.createServer(options, (req, res) => { res.writeHead(200); res.end('hello world\n'); }).listen(8000); ``` Or ```mjs import { createServer } from 'node:https'; import { readFileSync } from 'node:fs'; const options = { pfx: readFileSync('test_cert.pfx'), passphrase: 'sample', }; createServer(options, (req, res) => { res.writeHead(200); res.end('hello world\n'); }).listen(8000); ``` ```cjs const https = require('node:https'); const fs = require('node:fs'); const options = { pfx: fs.readFileSync('test_cert.pfx'), passphrase: 'sample', }; https.createServer(options, (req, res) => { res.writeHead(200); res.end('hello world\n'); }).listen(8000); ``` To generate the certificate and key for this example, run: ```bash openssl req -x509 -newkey rsa:2048 -nodes -sha256 -subj '/CN=localhost' \ -keyout private-key.pem -out certificate.pem ``` Then, to generate the `pfx` certificate for this example, run: ```bash openssl pkcs12 -certpbe AES-256-CBC -export -out test_cert.pfx \ -inkey private-key.pem -in certificate.pem -passout pass:sample ``` ## `https.get(options[, callback])` ## `https.get(url[, options][, callback])` <!-- YAML added: v0.3.6 changes: - version: v10.9.0 pr-url: https://github.com/nodejs/node/pull/21616 description: The `url` parameter can now be passed along with a separate `options` object. - version: v7.5.0 pr-url: https://github.com/nodejs/node/pull/10638 description: The `options` parameter can be a WHATWG `URL` object. --> * `url` {string | URL} * `options` {Object | string | URL} Accepts the same `options` as [`https.request()`][], with the method set to GET by default. * `callback` {Function} Like [`http.get()`][] but for HTTPS. `options` can be an object, a string, or a [`URL`][] object. If `options` is a string, it is automatically parsed with [`new URL()`][]. If it is a [`URL`][] object, it will be automatically converted to an ordinary `options` object. ```mjs import { get } from 'node:https'; import process from 'node:process'; get('https://encrypted.google.com/', (res) => { console.log('statusCode:', res.statusCode); console.log('headers:', res.headers); res.on('data', (d) => { process.stdout.write(d); }); }).on('error', (e) => { console.error(e); }); ``` ```cjs const https = require('node:https'); https.get('https://encrypted.google.com/', (res) => { console.log('statusCode:', res.statusCode); console.log('headers:', res.headers); res.on('data', (d) => { process.stdout.write(d); }); }).on('error', (e) => { console.error(e); }); ``` ## `https.globalAgent` <!-- YAML added: v0.5.9 changes: - version: - v19.0.0 pr-url: https://github.com/nodejs/node/pull/43522 description: The agent now uses HTTP Keep-Alive and a 5 second timeout by default. --> Global instance of [`https.Agent`][] for all HTTPS client requests. Diverges from a default [`https.Agent`][] configuration by having `keepAlive` enabled and a `timeout` of 5 seconds. ## `https.request(options[, callback])` ## `https.request(url[, options][, callback])` <!-- YAML added: v0.3.6 changes: - version: v20.16.0 pr-url: https://github.com/nodejs/node/pull/53329 description: The `clientCertEngine` option depends on custom engine support in OpenSSL which is deprecated in OpenSSL 3. - version: - v16.7.0 - v14.18.0 pr-url: https://github.com/nodejs/node/pull/39310 description: When using a `URL` object parsed username and password will now be properly URI decoded. - version: - v14.1.0 - v13.14.0 pr-url: https://github.com/nodejs/node/pull/32786 description: The `highWaterMark` option is accepted now. - version: v10.9.0 pr-url: https://github.com/nodejs/node/pull/21616 description: The `url` parameter can now be passed along with a separate `options` object. - version: v9.3.0 pr-url: https://github.com/nodejs/node/pull/14903 description: The `options` parameter can now include `clientCertEngine`. - version: v7.5.0 pr-url: https://github.com/nodejs/node/pull/10638 description: The `options` parameter can be a WHATWG `URL` object. --> * `url` {string | URL} * `options` {Object | string | URL} Accepts all `options` from [`http.request()`][], with some differences in default values: * `protocol` **Default:** `'https:'` * `port` **Default:** `443` * `agent` **Default:** `https.globalAgent` * `callback` {Function} * Returns: {http.ClientRequest} Makes a request to a secure web server. The following additional `options` from [`tls.connect()`][] are also accepted: `ca`, `cert`, `ciphers`, `clientCertEngine` (deprecated), `crl`, `dhparam`, `ecdhCurve`, `honorCipherOrder`, `key`, `passphrase`, `pfx`, `rejectUnauthorized`, `secureOptions`, `secureProtocol`, `servername`, `sessionIdContext`, `highWaterMark`. `options` can be an object, a string, or a [`URL`][] object. If `options` is a string, it is automatically parsed with [`new URL()`][]. If it is a [`URL`][] object, it will be automatically converted to an ordinary `options` object. `https.request()` returns an instance of the [`http.ClientRequest`][] class. The `ClientRequest` instance is a writable stream. If one needs to upload a file with a POST request, then write to the `ClientRequest` object. ```mjs import { request } from 'node:https'; import process from 'node:process'; const options = { hostname: 'encrypted.google.com', port: 443, path: '/', method: 'GET', }; const req = request(options, (res) => { console.log('statusCode:', res.statusCode); console.log('headers:', res.headers); res.on('data', (d) => { process.stdout.write(d); }); }); req.on('error', (e) => { console.error(e); }); req.end(); ``` ```cjs const https = require('node:https'); const options = { hostname: 'encrypted.google.com', port: 443, path: '/', method: 'GET', }; const req = https.request(options, (res) => { console.log('statusCode:', res.statusCode); console.log('headers:', res.headers); res.on('data', (d) => { process.stdout.write(d); }); }); req.on('error', (e) => { console.error(e); }); req.end(); ``` Example using options from [`tls.connect()`][]: ```js const options = { hostname: 'encrypted.google.com', port: 443, path: '/', method: 'GET', key: fs.readFileSync('private-key.pem'), cert: fs.readFileSync('certificate.pem'), }; options.agent = new https.Agent(options); const req = https.request(options, (res) => { // ... }); ``` Alternatively, opt out of connection pooling by not using an [`Agent`][]. ```js const options = { hostname: 'encrypted.google.com', port: 443, path: '/', method: 'GET', key: fs.readFileSync('private-key.pem'), cert: fs.readFileSync('certificate.pem'), agent: false, }; const req = https.request(options, (res) => { // ... }); ``` Example using a [`URL`][] as `options`: ```js const options = new URL('https://abc:xyz@example.com'); const req = https.request(options, (res) => { // ... }); ``` Example pinning on certificate fingerprint, or the public key (similar to `pin-sha256`): ```mjs import { checkServerIdentity } from 'node:tls'; import { Agent, request } from 'node:https'; import { createHash } from 'node:crypto'; function sha256(s) { return createHash('sha256').update(s).digest('base64'); } const options = { hostname: 'github.com', port: 443, path: '/', method: 'GET', checkServerIdentity: function(host, cert) { // Make sure the certificate is issued to the host we are connected to const err = checkServerIdentity(host, cert); if (err) { return err; } // Pin the public key, similar to HPKP pin-sha256 pinning const pubkey256 = 'SIXvRyDmBJSgatgTQRGbInBaAK+hZOQ18UmrSwnDlK8='; if (sha256(cert.pubkey) !== pubkey256) { const msg = 'Certificate verification error: ' + `The public key of '${cert.subject.CN}' ` + 'does not match our pinned fingerprint'; return new Error(msg); } // Pin the exact certificate, rather than the pub key const cert256 = 'FD:6E:9B:0E:F3:98:BC:D9:04:C3:B2:EC:16:7A:7B:' + '0F:DA:72:01:C9:03:C5:3A:6A:6A:E5:D0:41:43:63:EF:65'; if (cert.fingerprint256 !== cert256) { const msg = 'Certificate verification error: ' + `The certificate of '${cert.subject.CN}' ` + 'does not match our pinned fingerprint'; return new Error(msg); } // This loop is informational only. // Print the certificate and public key fingerprints of all certs in the // chain. Its common to pin the public key of the issuer on the public // internet, while pinning the public key of the service in sensitive // environments. let lastprint256; do { console.log('Subject Common Name:', cert.subject.CN); console.log(' Certificate SHA256 fingerprint:', cert.fingerprint256); const hash = createHash('sha256'); console.log(' Public key ping-sha256:', sha256(cert.pubkey)); lastprint256 = cert.fingerprint256; cert = cert.issuerCertificate; } while (cert.fingerprint256 !== lastprint256); }, }; options.agent = new Agent(options); const req = request(options, (res) => { console.log('All OK. Server matched our pinned cert or public key'); console.log('statusCode:', res.statusCode); res.on('data', (d) => {}); }); req.on('error', (e) => { console.error(e.message); }); req.end(); ``` ```cjs const tls = require('node:tls'); const https = require('node:https'); const crypto = require('node:crypto'); function sha256(s) { return crypto.createHash('sha256').update(s).digest('base64'); } const options = { hostname: 'github.com', port: 443, path: '/', method: 'GET', checkServerIdentity: function(host, cert) { // Make sure the certificate is issued to the host we are connected to const err = tls.checkServerIdentity(host, cert); if (err) { return err; } // Pin the public key, similar to HPKP pin-sha256 pinning const pubkey256 = 'SIXvRyDmBJSgatgTQRGbInBaAK+hZOQ18UmrSwnDlK8='; if (sha256(cert.pubkey) !== pubkey256) { const msg = 'Certificate verification error: ' + `The public key of '${cert.subject.CN}' ` + 'does not match our pinned fingerprint'; return new Error(msg); } // Pin the exact certificate, rather than the pub key const cert256 = 'FD:6E:9B:0E:F3:98:BC:D9:04:C3:B2:EC:16:7A:7B:' + '0F:DA:72:01:C9:03:C5:3A:6A:6A:E5:D0:41:43:63:EF:65'; if (cert.fingerprint256 !== cert256) { const msg = 'Certificate verification error: ' + `The certificate of '${cert.subject.CN}' ` + 'does not match our pinned fingerprint'; return new Error(msg); } // This loop is informational only. // Print the certificate and public key fingerprints of all certs in the // chain. Its common to pin the public key of the issuer on the public // internet, while pinning the public key of the service in sensitive // environments. do { console.log('Subject Common Name:', cert.subject.CN); console.log(' Certificate SHA256 fingerprint:', cert.fingerprint256); hash = crypto.createHash('sha256'); console.log(' Public key ping-sha256:', sha256(cert.pubkey)); lastprint256 = cert.fingerprint256; cert = cert.issuerCertificate; } while (cert.fingerprint256 !== lastprint256); }, }; options.agent = new https.Agent(options); const req = https.request(options, (res) => { console.log('All OK. Server matched our pinned cert or public key'); console.log('statusCode:', res.statusCode); res.on('data', (d) => {}); }); req.on('error', (e) => { console.error(e.message); }); req.end(); ``` Outputs for example: ```text Subject Common Name: github.com Certificate SHA256 fingerprint: FD:6E:9B:0E:F3:98:BC:D9:04:C3:B2:EC:16:7A:7B:0F:DA:72:01:C9:03:C5:3A:6A:6A:E5:D0:41:43:63:EF:65 Public key ping-sha256: SIXvRyDmBJSgatgTQRGbInBaAK+hZOQ18UmrSwnDlK8= Subject Common Name: Sectigo ECC Domain Validation Secure Server CA Certificate SHA256 fingerprint: 61:E9:73:75:E9:F6:DA:98:2F:F5:C1:9E:2F:94:E6:6C:4E:35:B6:83:7C:E3:B9:14:D2:24:5C:7F:5F:65:82:5F Public key ping-sha256: Eep0p/AsSa9lFUH6KT2UY+9s1Z8v7voAPkQ4fGknZ2g= Subject Common Name: USERTrust ECC Certification Authority Certificate SHA256 fingerprint: A6:CF:64:DB:B4:C8:D5:FD:19:CE:48:89:60:68:DB:03:B5:33:A8:D1:33:6C:62:56:A8:7D:00:CB:B3:DE:F3:EA Public key ping-sha256: UJM2FOhG9aTNY0Pg4hgqjNzZ/lQBiMGRxPD5Y2/e0bw= Subject Common Name: AAA Certificate Services Certificate SHA256 fingerprint: D7:A7:A0:FB:5D:7E:27:31:D7:71:E9:48:4E:BC:DE:F7:1D:5F:0C:3E:0A:29:48:78:2B:C8:3E:E0:EA:69:9E:F4 Public key ping-sha256: vRU+17BDT2iGsXvOi76E7TQMcTLXAqj0+jGPdW7L1vM= All OK. Server matched our pinned cert or public key statusCode: 200 ``` [`Agent`]: #class-httpsagent [`Session Resumption`]: tls.md#session-resumption [`URL`]: url.md#the-whatwg-url-api [`http.Agent(options)`]: http.md#new-agentoptions [`http.Agent`]: http.md#class-httpagent [`http.ClientRequest`]: http.md#class-httpclientrequest [`http.Server`]: http.md#class-httpserver [`http.createServer()`]: http.md#httpcreateserveroptions-requestlistener [`http.get()`]: http.md#httpgetoptions-callback [`http.request()`]: http.md#httprequestoptions-callback [`https.Agent`]: #class-httpsagent [`https.request()`]: #httpsrequestoptions-callback [`import()`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/import [`net.Server`]: net.md#class-netserver [`new URL()`]: url.md#new-urlinput-base [`server.close()`]: http.md#serverclosecallback [`server.closeAllConnections()`]: http.md#servercloseallconnections [`server.closeIdleConnections()`]: http.md#servercloseidleconnections [`server.headersTimeout`]: http.md#serverheaderstimeout [`server.keepAliveTimeout`]: http.md#serverkeepalivetimeout [`server.listen()`]: net.md#serverlisten [`server.maxHeadersCount`]: http.md#servermaxheaderscount [`server.requestTimeout`]: http.md#serverrequesttimeout [`server.setTimeout()`]: http.md#serversettimeoutmsecs-callback [`server.timeout`]: http.md#servertimeout [`tls.connect()`]: tls.md#tlsconnectoptions-callback [`tls.createSecureContext()`]: tls.md#tlscreatesecurecontextoptions [`tls.createServer()`]: tls.md#tlscreateserveroptions-secureconnectionlistener [httpsServerClose]: #serverclosecallback [sni wiki]: https://en.wikipedia.org/wiki/Server_Name_Indication