fix(std/http): Support ipv6 parsing (#5263)

std/http/server.ts

@@ -237,6 +237,34 @@ export class Server implements AsyncIterable<ServerRequest> {
 /** Options for creating an HTTP server. */
 export type HTTPOptions = Omit<Deno.ListenOptions, "transport">;
 
+/**
+ * Parse addr from string
+ *
+ *     const addr = "::1:8000";
+ *     parseAddrFromString(addr);
+ *
+ * @param addr Address string
+ */
+export function _parseAddrFromStr(addr: string): HTTPOptions {
+  let url: URL;
+  try {
+    url = new URL(`http://${addr}`);
+  } catch {
+    throw new TypeError("Invalid address.");
+  }
+  if (
+    url.username ||
+    url.password ||
+    url.pathname != "/" ||
+    url.search ||
+    url.hash
+  ) {
+    throw new TypeError("Invalid address.");
+  }
+
+  return { hostname: url.hostname, port: Number(url.port) };
+}
+
 /**
  * Create a HTTP server
  *
@@ -249,8 +277,7 @@ export type HTTPOptions = Omit<Deno.ListenOptions, "transport">;
  */
 export function serve(addr: string | HTTPOptions): Server {
   if (typeof addr === "string") {
-    const [hostname, port] = addr.split(":");
+    addr = _parseAddrFromStr(addr);
-    addr = { hostname, port: Number(port) };
   }
 
   const listener = Deno.listen(addr);

std/http/server_test.ts

@@ -13,7 +13,14 @@ import {
   assertStringContains,
   assertThrowsAsync,
 } from "../testing/asserts.ts";
-import { Response, ServerRequest, Server, serve, serveTLS } from "./server.ts";
+import {
+  Response,
+  ServerRequest,
+  Server,
+  serve,
+  serveTLS,
+  _parseAddrFromStr,
+} from "./server.ts";
 import { BufReader, BufWriter } from "../io/bufio.ts";
 import { delay } from "../async/delay.ts";
 import { encode, decode } from "../encoding/utf8.ts";
@@ -612,3 +619,43 @@ Deno.test({
     }
   },
 });
+
+Deno.test({
+  name: "server.serve() should be able to parse IPV4 address",
+  fn: (): void => {
+    const server = serve("127.0.0.1:8124");
+    const expected = {
+      hostname: "127.0.0.1",
+      port: 8124,
+      transport: "tcp",
+    };
+    assertEquals(expected, server.listener.addr);
+    server.close();
+  },
+});
+
+Deno.test({
+  name: "server.parseAddrFromStr() should be able to parse IPV6 address",
+  fn: (): void => {
+    const addr = _parseAddrFromStr("[::1]:8124");
+    const expected = {
+      hostname: "[::1]",
+      port: 8124,
+    };
+    assertEquals(expected, addr);
+  },
+});
+
+Deno.test({
+  name: "server.serve() should be able to parse IPV6 address",
+  fn: (): void => {
+    const server = serve("[::1]:8124");
+    const expected = {
+      hostname: "::1",
+      port: 8124,
+      transport: "tcp",
+    };
+    assertEquals(expected, server.listener.addr);
+    server.close();
+  },
+});