feat(http): expose proxy configuration (#824)

* feat(http): add proxy config

* chore: build iife api

* chore: allow `too_many_arguments`

* improvement

* refactor: restructure code

* improvement

* format

plugins/http/guest-js/index.ts

@@ -26,6 +26,45 @@
 
 import { invoke } from "@tauri-apps/api/core";
 
+/**
+ * Configuration of a proxy that a Client should pass requests to.
+ *
+ * @since 2.0.0
+ */
+export type Proxy = {
+  /**
+   * Proxy all traffic to the passed URL.
+   */
+  all?: string | ProxyConfig;
+  /**
+   * Proxy all HTTP traffic to the passed URL.
+   */
+  http?: string | ProxyConfig;
+  /**
+   * Proxy all HTTPS traffic to the passed URL.
+   */
+  https?: string | ProxyConfig;
+};
+
+export interface ProxyConfig {
+  /**
+   * The URL of the proxy server.
+   */
+  url: string;
+  /**
+   * Set the `Proxy-Authorization` header using Basic auth.
+   */
+  basicAuth?: {
+    username: string;
+    password: string;
+  };
+  /**
+   * A configuration for filtering out requests that shouldn’t be proxied.
+   * Entries are expected to be comma-separated (whitespace between entries is ignored)
+   */
+  noProxy?: string;
+}
+
 /**
  * Options to configure the Rust client used to make fetch requests
  *
@@ -39,6 +78,10 @@ export interface ClientOptions {
   maxRedirections?: number;
   /** Timeout in milliseconds */
   connectTimeout?: number;
+  /**
+   * Configuration of a proxy that a Client should pass requests to.
+   */
+  proxy?: Proxy;
 }
 
 /**
@@ -61,11 +104,13 @@ export async function fetch(
 ): Promise<Response> {
   const maxRedirections = init?.maxRedirections;
   const connectTimeout = init?.maxRedirections;
+  const proxy = init?.proxy;
 
   // Remove these fields before creating the request
   if (init) {
     delete init.maxRedirections;
     delete init.connectTimeout;
+    delete init.proxy;
   }
 
   const req = new Request(input, init);
@@ -73,12 +118,15 @@ export async function fetch(
   const reqData = buffer.byteLength ? Array.from(new Uint8Array(buffer)) : null;
 
   const rid = await invoke<number>("plugin:http|fetch", {
-    method: req.method,
-    url: req.url,
-    headers: Array.from(req.headers.entries()),
-    data: reqData,
-    maxRedirections,
-    connectTimeout,
+    clientConfig: {
+      method: req.method,
+      url: req.url,
+      headers: Array.from(req.headers.entries()),
+      data: reqData,
+      maxRedirections,
+      connectTimeout,
+      proxy,
+    },
   });
 
   req.signal.addEventListener("abort", () => {