feat: Add Deno.dialTLS()

Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>

js/tls_test.ts

@@ -0,0 +1,25 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test, testPerm, assert, assertEquals } from "./test_util.ts";
+
+// TODO(ry) The tests in this file use github.com:443, but it would be better to
+// not rely on an internet connection and rather use a localhost TLS server.
+
+test(async function dialTLSNoPerm(): Promise<void> {
+  let err;
+  try {
+    await Deno.dialTLS({ hostname: "github.com", port: 443 });
+  } catch (e) {
+    err = e;
+  }
+  assertEquals(err.kind, Deno.ErrorKind.PermissionDenied);
+  assertEquals(err.name, "PermissionDenied");
+});
+
+testPerm({ net: true }, async function dialTLSBasic(): Promise<void> {
+  const conn = await Deno.dialTLS({ hostname: "github.com", port: 443 });
+  assert(conn.rid > 0);
+  const body = new TextEncoder().encode("GET / HTTP/1.0\r\n\r\n");
+  const writeResult = await conn.write(body);
+  assertEquals(body.length, writeResult);
+  conn.close();
+});