feat: 增加 HTTP 代理调用支持

README.md

@@ -390,6 +390,32 @@ const signCheckPass = alipaySdk.rsaCheck(signContent, sign, signType);
 console.log(signCheckPass);
 ```
 
+### 通过 HTTP 代理服务器调用
+
+在需要固定 IP 白名单调用的场景下，可以通过配置 `config.proxyAgent` 来指定 HTTP 代理服务器调用。
+
+```ts
+import { AlipaySdk, ProxyAgent } from 'alipay-sdk';
+
+// 实例化客户端
+const alipaySdk = new AlipaySdk({
+  // 其他配置不展示
+  // ...
+  proxyAgent: new ProxyAgent('http(s)://your-http-proxy-address'),
+});
+
+// 后续的所有 http 调用都会走此 HTTP 代理服务器
+const result = await alipaySdk.curl('POST', '/v3/alipay/user/deloauth/detail/query', {
+  body: {
+    date: '20230102',
+    offset: 20,
+    limit: 1,
+  },
+});
+
+console.log(result);
+```
+
 ## alipay-sdk v3 到 v4 的升级说明
 
 从 v3 到 v4 有以下不兼容变更，请参考示例代码进行更新

src/alipay.ts

@@ -4,6 +4,7 @@ import { Readable } from 'node:stream';
 import urllib, { Agent, IncomingHttpHeaders } from 'urllib';
 import type {
   HttpClientResponse, HttpMethod, RequestOptions, RawResponseWithMeta,
+  ProxyAgent,
 } from 'urllib';
 import camelcaseKeys from 'camelcase-keys';
 import snakeCaseKeys from 'snakecase-keys';
@@ -174,6 +175,7 @@ export interface AlipayCURLOptions {
 export class AlipaySdk {
   public readonly version = 'alipay-sdk-nodejs-4.0.0';
   public config: Required<AlipaySdkConfig>;
+  #proxyAgent?: ProxyAgent;
 
   /**
    * @class
@@ -205,6 +207,7 @@ export class AlipaySdk {
       // 普通公钥模式，传入了支付宝公钥
       config.alipayPublicKey = this.formatKey(config.alipayPublicKey, 'PUBLIC KEY');
     }
+    this.#proxyAgent = config.proxyAgent;
     this.config = Object.assign({
       urllib,
       gateway: 'https://openapi.alipay.com/gateway.do',
@@ -337,6 +340,7 @@ export class AlipaySdk {
       method: httpMethod,
       dataType: dataType === 'stream' ? 'stream' : 'text',
       timeout: options?.requestTimeout ?? this.config.timeout,
+      dispatcher: this.#proxyAgent,
     };
     // 默认需要对响应做验签，确保响应是由支付宝返回的
     let validateResponseSignature = true;
@@ -598,6 +602,7 @@ export class AlipaySdk {
         ...formStream.headers(),
       },
       content: new Readable().wrap(formStream as any),
+      dispatcher: this.#proxyAgent,
     };
     // 计算签名
     const signData = sign(method, signParams, config);
@@ -839,6 +844,7 @@ export class AlipaySdk {
           // 'content-type': 'application/json',
           accept: 'application/json',
         },
+        dispatcher: this.#proxyAgent,
       });
     } catch (err: any) {
       debug('HttpClient Request error: %s', err);

src/index.ts

@@ -1,3 +1,4 @@
+export { ProxyAgent } from 'urllib';
 export * from './types.js';
 export * from './alipay.js';
 export { AlipayFormData } from './form.js';

src/types.ts

@@ -1,3 +1,5 @@
+import { ProxyAgent } from 'urllib';
+
 export type AlipaySdkSignType = 'RSA2' | 'RSA';
 
 /**
@@ -56,4 +58,6 @@ export interface AlipaySdkConfig {
   encryptKey?: string;
   /** 服务器地址 */
   wsServiceUrl?: string;
+  /** httpClient 请求代理 */
+  proxyAgent?: ProxyAgent;
 }

test/alipay.test.ts

@@ -12,6 +12,7 @@ import {
 } from './helper.js';
 import {
   AlipayFormData, AlipayFormStream, AlipayRequestError, AlipaySdk, AlipaySdkConfig,
+  ProxyAgent,
 } from '../src/index.js';
 import { aesDecryptText } from '../src/util.js';
 
@@ -127,6 +128,33 @@ describe('test/alipay.test.ts', () => {
       });
     });
 
+    it('使用 HTTP 代理调用', async () => {
+      if (!process.env.TEST_ALIPAY_HTTP_PROXY) {
+        return;
+      }
+      const proxyAgent = new ProxyAgent(process.env.TEST_ALIPAY_HTTP_PROXY);
+      const sdkWithProxy = new AlipaySdk({
+        ...sdkStableConfig,
+        proxyAgent,
+      });
+      await assert.rejects(async () => {
+        await sdkWithProxy.curl('POST', '/v3/alipay/user/info/share', {
+          body: {
+            auth_token: '20120823ac6ffaa4d2d84e7384bf983531473993',
+          },
+        });
+      }, err => {
+        console.error(err);
+        assert(err instanceof AlipayRequestError);
+        assert.match(err.message, /无效的访问令牌/);
+        assert.equal(err.links!.length, 1);
+        assert.equal(err.code, 'invalid-auth-token');
+        assert(err.traceId);
+        assert.equal(err.responseHttpStatus, 401);
+        return true;
+      });
+    });
+
     it('POST 文件上传，使用 AlipayFormData', async () => {
       // https://opendocs.alipay.com/open-v3/5aa91070_alipay.open.file.upload?scene=common&pathHash=c8e11ccc
       const filePath = getFixturesFile('demo.jpg');