Support HTTP header Config for client

cli/client.js

@@ -11,13 +11,15 @@ const argv = mri(process.argv.slice(2), {
 if (argv.help || argv.h) {
 	process.stdout.write(`
 Usage:
-    tcp-over-websockets <tunnel-url> <tunnelled-target> <port-to-listen-on>
+    tcp-over-websockets <tunnel-url> <tunnelled-target> <port-to-listen-on> [<http-header-for-tunnel>]
 Arguments:
-    tunnel-url         The WebSocket address of the tunnel server.
-    tunnelled-target   The hostname & port to let the tunnel server connect to.
-    port-to-listen-on  The (local) port to expose the tunnel on.
+    tunnel-url               The WebSocket address of the tunnel server.
+    tunnelled-target         The hostname & port to let the tunnel server connect to.
+    port-to-listen-on        The (local) port to expose the tunnel on.
+	http-header-for-tunnel   The HTTP header for tunnerl websocket request, JSON format.
 Example:
     tcp-over-websockets wss://example.org localhost:22 8022
+	tcp-over-websockets wss://example.org localhost:22 8022 '{ "Cookie" : "anything" }' 
 \n`)
 	process.exit(0)
 }
@@ -40,7 +42,13 @@ if (!target) showError('missing target argument')
 const port = argv._[2]
 if (!port) showError('missing port argument')
 
-startClient(tunnel, target, port, (err) => {
+const header_str = argv._[3]
+let headers = undefined
+if (header_str) {
+	headers = JSON.parse(header_str)
+}
+
+startClient(tunnel, target, port, headers, (err) => {
 	if (err) showError(err)
 	else console.info(`tunneling ${target} via ${tunnel} & exposing it on port ${port}`)
 })

client.js

@@ -3,8 +3,12 @@
 const {createServer} = require('net')
 const {tunnelTo} = require('./tunnel')
 
-const startClient = (tunnel, target, port, cb) => {
-	const tcpServer = createServer(tunnelTo(tunnel, target))
+const startClient = (tunnel, target, port, opt, cb) => {
+	if (arguments.length === 4 && 'function' === typeof opt) {
+		cb = opt
+		opt = {}
+	}
+	const tcpServer = createServer(tunnelTo(tunnel, target, opt))
 
 	tcpServer.listen(port, cb)
 	return tcpServer

tunnel.js

@@ -4,8 +4,8 @@ const ws = require('websocket-stream')
 const pipe = require('pump')
 const debug = require('debug')('tcp-over-websockets:client')
 
-const tunnelTo = (tunnel, target) => (local) => {
-	const remote = ws(tunnel + (tunnel.slice(-1) === '/' ? '' : '/') + target)
+const tunnelTo = (tunnel, target, header) => (local) => {
+	const remote = ws(tunnel + (tunnel.slice(-1) === '/' ? '' : '/') + target, {headers : header})
 
 	const onError = (err) => {
 		if (err) debug(err)