fix(credential-provider-imds): destroy request handle on promise reso…

…lve/reject (#2452)

Co-authored-by: Trivikram Kamat <16024985+trivikr@users.noreply.github.com>

packages/credential-provider-imds/src/remoteProvider/httpRequest.spec.ts

@@ -1,10 +1,11 @@
 import { ProviderError } from "@aws-sdk/property-provider";
-import { createServer } from "http";
+import http, { createServer } from "http";
 import nock from "nock";
 
 import { httpRequest } from "./httpRequest";
 
 describe("httpRequest", () => {
+  const requestSpy = jest.spyOn(http, "request");
   let port: number;
   const host = "localhost";
   const path = "/";
@@ -26,13 +27,18 @@ describe("httpRequest", () => {
     port = await getOpenPort();
   });
 
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
   describe("returns response", () => {
     it("defaults to method GET", async () => {
       const expectedResponse = "expectedResponse";
       const scope = nock(`http://${host}:${port}`).get(path).reply(200, expectedResponse);
 
       const response = await httpRequest({ host, path, port });
       expect(response.toString()).toStrictEqual(expectedResponse);
+      expect(requestSpy.mock.results[0].value.socket).toHaveProperty("destroyed", true);
 
       scope.done();
     });
@@ -44,6 +50,7 @@ describe("httpRequest", () => {
 
       const response = await httpRequest({ host, path, port, method });
       expect(response.toString()).toStrictEqual(expectedResponse);
+      expect(requestSpy.mock.results[0].value.socket).toHaveProperty("destroyed", true);
 
       scope.done();
     });
@@ -57,6 +64,7 @@ describe("httpRequest", () => {
         await expect(httpRequest({ host, path, port })).rejects.toStrictEqual(
           Object.assign(new ProviderError("Error response received from instance metadata service"), { statusCode })
         );
+        expect(requestSpy.mock.results[0].value.socket).toHaveProperty("destroyed", true);
 
         scope.done();
       });
@@ -68,6 +76,7 @@ describe("httpRequest", () => {
       await expect(httpRequest({ host, path, port })).rejects.toStrictEqual(
         new ProviderError("Unable to connect to instance metadata service")
       );
+      expect(requestSpy.mock.results[0].value.socket).toHaveProperty("destroyed", true);
 
       scope.done();
     });
@@ -91,6 +100,7 @@ describe("httpRequest", () => {
     await expect(httpRequest({ host, path, port, timeout })).rejects.toStrictEqual(
       new ProviderError("TimeoutError from instance metadata service")
     );
+    expect(requestSpy.mock.results[0].value.socket).toHaveProperty("destroyed", true);
 
     scope.done();
   });

packages/credential-provider-imds/src/remoteProvider/httpRequest.ts

@@ -11,10 +11,12 @@ export function httpRequest(options: RequestOptions): Promise<Buffer> {
 
     req.on("error", (err) => {
       reject(Object.assign(new ProviderError("Unable to connect to instance metadata service"), err));
+      req.destroy();
     });
 
     req.on("timeout", () => {
       reject(new ProviderError("TimeoutError from instance metadata service"));
+      req.destroy();
     });
 
     req.on("response", (res: IncomingMessage) => {
@@ -23,6 +25,7 @@ export function httpRequest(options: RequestOptions): Promise<Buffer> {
         reject(
           Object.assign(new ProviderError("Error response received from instance metadata service"), { statusCode })
         );
+        req.destroy();
       }
 
       const chunks: Array<Buffer> = [];
@@ -31,6 +34,7 @@ export function httpRequest(options: RequestOptions): Promise<Buffer> {
       });
       res.on("end", () => {
         resolve(Buffer.concat(chunks));
+        req.destroy();
       });
     });