basic client

1 files changed, 50 insertions, 0 deletions

diff --git a/connect.js b/connect.js
new file mode 100644
index 0000000..35e2297
--- /dev/null
+++ b/connect.js
@@ -0,0 +1,50 @@
+'use strict'
+
+const {connect: connectTls} = require('tls')
+const {
+	DEFAULT_PORT,
+	ALPN_ID,
+	MIN_TLS_VERSION,
+} = require('./lib/util')
+
+const connectToGeminiServer = (opt, cb) => {
+	if (typeof opt === 'function') {
+		cb = opt
+		opt = {}
+	}
+	const {
+		host,
+		port,
+		tlsOpt,
+	} = {
+		host: '127.0.0.1',
+		port: DEFAULT_PORT,
+		tlsOpt: {},
+		// todo: TOFU via isTrustedCertificate()
+		...opt,
+	}
+
+	const socket = connectTls({
+		ALPNProtocols: [ALPN_ID],
+		minVersion: MIN_TLS_VERSION,
+		host, port,
+		// todo: cert, key, passphrase
+		...tlsOpt,
+	})
+
+	let cbCalled = false
+	socket.once('error', (err) => {
+		if (cbCalled) return;
+		cbCalled = true
+		cb(err)
+	})
+	socket.once('secureConnect', () => {
+		if (cbCalled) return;
+		cbCalled = true
+		cb(null, socket)
+	})
+
+	return socket
+}
+
+module.exports = connectToGeminiServer