feat(http): add proxy support (#4721)

packages/core/src/infrastructure/http/http-agent.ts

@@ -1,5 +1,5 @@
 import type { Dispatcher } from "undici";
-import { Agent } from "undici";
+import { EnvHttpProxyAgent } from "undici";
 
 import type { ILogger } from "@homarr/core/infrastructure/logs";
 import { createLogger } from "@homarr/core/infrastructure/logs";
@@ -7,16 +7,15 @@ import { createLogger } from "@homarr/core/infrastructure/logs";
 // The below import statement initializes dns-caching
 import "@homarr/core/infrastructure/dns/init";
 
-interface HttpAgentOptions extends Agent.Options {
+interface HttpAgentOptions extends EnvHttpProxyAgent.Options {
   logger?: ILogger;
 }
 
-export class UndiciHttpAgent extends Agent {
+export class UndiciHttpAgent extends EnvHttpProxyAgent {
   private logger: ILogger;
 
   constructor(props?: HttpAgentOptions) {
     super(props);
-
     this.logger = props?.logger ?? createLogger({ module: "httpAgent" });
   }
 

packages/core/src/infrastructure/http/request.ts

@@ -42,12 +42,13 @@ export const createCertificateAgentAsync = async (override?: {
 };
 
 export const createHttpsAgentAsync = async (override?: Pick<AgentOptions, "ca" | "checkServerIdentity">) => {
-  return new HttpsAgent(
-    override ?? {
-      ca: await getAllTrustedCertificatesAsync(),
-      checkServerIdentity: createCustomCheckServerIdentity(await getTrustedCertificateHostnamesAsync()),
-    },
-  );
+  return new HttpsAgent({
+    ca: await getAllTrustedCertificatesAsync(),
+    checkServerIdentity: createCustomCheckServerIdentity(await getTrustedCertificateHostnamesAsync()),
+    // Override the ca and checkServerIdentity if provided
+    ...override,
+    proxyEnv: process.env,
+  });
 };
 
 export const createAxiosCertificateInstanceAsync = async (

packages/core/src/test/infrastructure/http/http-agent.spec.ts

@@ -7,7 +7,7 @@ import { TestLogger } from "../logs";
 
 vi.mock("undici", () => {
   return {
-    Agent: class Agent {
+    EnvHttpProxyAgent: class EnvHttpProxyAgent {
       dispatch(_options: Dispatcher.DispatchOptions, _handler: Dispatcher.DispatchHandler): boolean {
         return true;
       }