From 8325408834b04d14c340b03acb15731e47d3b444 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 15 Dec 2023 19:24:17 -0500
Subject: [PATCH] lib/request-browser: better usage of the fetch api.

---
 lib/request-browser.js | 44 +++++++++++++++++++++++++++++++-----------
 1 file changed, 33 insertions(+), 11 deletions(-)

diff --git a/lib/request-browser.js b/lib/request-browser.js
index 2d9a24b..d862996 100644
--- a/lib/request-browser.js
+++ b/lib/request-browser.js
@@ -29,7 +29,8 @@ class RequestOptions {
     this.port = 80;
     this.path = '/';
     this.query = '';
-    this.agent = 'brq';
+    this.pool = false;
+    this.agent = null;
     this.lookup = null;
 
     this.type = null;
@@ -102,6 +103,11 @@ class RequestOptions {
       this.password = options.password;
     }
 
+    if (options.pool != null) {
+      assert(typeof options.pool === 'boolean');
+      this.pool = options.pool;
+    }
+
     if (options.agent != null) {
       assert(typeof options.agent === 'string');
       this.agent = options.agent;
@@ -249,24 +255,33 @@ class RequestOptions {
   getHeaders() {
     const headers = new FetchHeaders();
 
-    headers.append('User-Agent', this.agent);
+    let referrer = 'no-referrer';
+
+    // https://developer.mozilla.org/en-US/docs/Glossary/Forbidden_header_name
+    if (this.agent != null)
+      headers.append('User-Agent', this.agent);
 
     if (this.type)
       headers.append('Content-Type', mime.type(this.type));
 
-    if (this.body)
-      headers.append('Content-Length', this.body.length.toString(10));
-
     if (this.username || this.password) {
       const auth = `${this.username}:${this.password}`;
       const data = Buffer.from(auth, 'utf8');
       headers.append('Authorization', `Basic ${data.toString('base64')}`);
     }
 
-    for (const name of Object.keys(this.headers))
+    for (const name of Object.keys(this.headers)) {
+      switch (name.toLowerCase()) {
+        case 'referer':
+        case 'referrer':
+          referrer = this.headers[name];
+          continue;
+      }
+
       headers.append(name, this.headers[name]);
+    }
 
-    return headers;
+    return [headers, referrer];
   }
 
   toURL() {
@@ -292,19 +307,26 @@ class RequestOptions {
   }
 
   toHTTP() {
+    // https://developer.mozilla.org/en-US/docs/Web/API/Request/Request#parameters
+    // https://developer.mozilla.org/en-US/docs/Web/API/Request/mode
+    // https://developer.mozilla.org/en-US/docs/Web/API/Request/credentials
+    const auth = this.username || this.password;
+    const [headers, referrer] = this.getHeaders();
+
     return {
       method: this.method,
-      headers: this.getHeaders(),
+      headers,
       body: this.body
         ? new Uint8Array(this.body.buffer,
                          this.body.byteOffset,
                          this.body.byteLength)
         : null,
       mode: 'cors',
-      credentials: 'include',
-      cache: 'no-cache',
+      credentials: auth ? 'include' : 'same-origin',
+      cache: 'no-store',
       redirect: 'follow',
-      referrer: 'no-referrer'
+      referrer,
+      keepalive: this.pool
     };
   }
 }