feat(http): expose proxy configuration

.changes/http-proxy-config.md

@@ -0,0 +1,6 @@
+---
+"http": minor
+"http-js": minor
+---
+
+The fetch method now exposes a `proxy` field to configure proxy.

plugins/http/guest-js/index.ts

@@ -26,6 +26,38 @@
 
 import { invoke } from "@tauri-apps/api/primitives";
 
+/**
+ * Configuration of a proxy that a Client should pass requests to.
+ *
+ * @since 2.0.0
+ */
+export interface ProxyConfig {
+  /**
+   * Proxy all traffic to the passed URL.
+   */
+  all?: string;
+  /**
+   * Proxy all HTTP traffic to the passed URL.
+   */
+  http?: string;
+  /**
+   * Proxy all HTTPS traffic to the passed URL.
+   */
+  https?: 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 +71,10 @@ export interface ClientOptions {
   maxRedirections?: number;
   /** Timeout in milliseconds */
   connectTimeout?: number;
+  /**
+   * Configuration of a proxy that a Client should pass requests to.
+   */
+  proxy?: ProxyConfig;
 }
 
 /**
@@ -61,11 +97,13 @@ 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);
@@ -79,6 +117,7 @@ export async function fetch(
     data: reqData,
     maxRedirections,
     connectTimeout,
+    proxy,
   });
 
   req.signal.addEventListener("abort", () => {