Веб-крючок:

 @ApiTags('SendGrid Event') @Controller('/sendgrid-event') export class SendGridEventController {  constructor(  private readonly appService: AppService,  private readonly sendGridEventService: SendGridEventService,  private readonly logger: Logger,  ) {  // For winston info.type  this.logger.setContext('sendgrid-inbound-parse');  }   /**  * Receive the Event Webhook from SendGrid  *  * @return {String} return 200  */  @Post('/webhook')  eventHandler(  @Req() request: Request,  @Headers('x-twilio-email-event-webhook-signature') signature: string,  @Headers('x-twilio-email-event-webhook-timestamp') timestamp: number,  @Body() body: any,  ): any {  console.log(  '--------------------------------------------------------------------------------------------',  );  this.logger.log(' /POST /sendgrid-event/webhook');  this.logger.log(JSON.stringify(body));   const reqHeader = request.rawHeaders.join(',');  // Verify headers.  if (!signature || !timestamp) {  this.logger.error(`Forbidden: ${reqHeader}`);  return {  ok: false,  message: '403, Forbidden',  };  }  // Convert the public key string to a ECPublicKey.  const ECPublicKey = this.sendGridEventService.convertPublicKeyToECDSA(  process.env.SENDGRID_EVENT_PUBLICKEY_FOR_ENGAGEMENT,  );  // Verify the signature.  //! Be sure to include the trailing carriage return and newline! - 'rn'  const payload = JSON.stringify(body)   'rn';  const verifyResult = this.sendGridEventService.verifySignature(  ECPublicKey,  payload,  signature,  timestamp,  );   if (!verifyResult) {  this.logger.error(`Unauthorized: ${reqHeader}`);  return {  ok: false,  message: '401, Unauthorized',  };  }   this.sendGridEventService.handleSendGridEvent(body);  } }  

И функция convertPublicKeyToECDSA , и verifySignature :

 /**  * Convert the public key string to a ECPublicKey.  *  * @param {string} publicKey verification key under Mail Settings  * @return {PublicKey} A public key using the ECDSA(Elliptic Curve Digital Signature Algorithm) algorithm  */  convertPublicKeyToECDSA(publicKey) {  return PublicKey.fromPem(publicKey);  }   /**  * Verify signed event webhook requests.  *  * @param {PublicKey} publicKey elliptic curve public key  * @param {string|Buffer} payload event payload in the request body  * @param {string} signature value obtained from the 'X-Twilio-Email-Event-Webhook-Signature' header  * @param {string} timestamp value obtained from the 'X-Twilio-Email-Event-Webhook-Timestamp' header  * @return {Boolean} true or false if signature is valid  */  verifySignature(publicKey, payload, signature, timestamp) {  const timestampPayload = timestamp   payload;  const decodedSignature = Signature.fromBase64(signature);  return Ecdsa.verify(timestampPayload, decodedSignature, publicKey);  }  

Но один и тот же код, иногда он работает, а иногда не работает.

1. Отправьте электронное письмо по 1234@qq.com адресу : запрос:

 {  "personalizations": [  {  "to": [  {  "email": "1234@qq.com",  "name": "Weijia Liu"  }  ],  "headers": {  "Message-ID": "lt;xxx-test-message-id-3@hiretual.comgt;",  "In-Reply-To": "lt;xxx-test-message-id-1@hiretual.comgt;",  "References": "lt;xxx-test-message-id-1@hiretual.comgt;"  }  }  ],  "from": {  "email": "from-xxx@xxxx.xxx.com",  "name": "from-xxx"  },  "reply_to": {  "email": "random-email-address-1@xx-xxx.testhtm.com ",  "name": "from-xxxx"  },  "subject": "Test SG 1",  "content": [  {  "type": "text/html",  "value": "lt;pgt;Hello 3 from Twilio SendGrid!lt;/pgt;lt;pgt;%open-track%lt;/pgt;lt;a href='https://www.google.com'gt;Click herelt;/agt;"  }  ],  "tracking_settings": {  "click_tracking": {  "enable": true,  "enable_text": false  },  "open_tracking": {  "enable": true,  "substitution_tag": "%open-track%"  }  } }  

It works in webhook:

 -------------------------------------------------------------------------------------------- [2021-12-06T09:43:03.724Z][info] service=standalone-webhooks|type=sendgrid-inbound-parse|content= /POST /sendgrid-event/webhook [2021-12-06T09:43:03.725Z][info] service=standalone-webhooks|type=sendgrid-inbound-parse|content=[{"email":"1234@qq.com","event":"dropped","reason":"Bounced Address","sg_event_id":"ZHJvcC0yNDIzOTU2OC1XSEhiVzlUOVNsMjcyRFFBT0QwN3B3LTA","sg_message_id":"WHHbW9T9Sl272DQAOD07pw.filterdrecv-75ff7b5ffb-ktk29-1-61ADDB24-A.0","smtp-id":"lt;WHHbW9T9Sl272DQAOD07pw@geopod-ismtpd-3-0gt;","timestamp":1638783780}]  

2. Но когда я отправляю в 12345@qq.com запрос:

 {  "personalizations": [  {  "to": [  {  "email": "12345@qq.com",  "name": "Weijia Liu"  }  ],  "headers": {  "Message-ID": "lt;xxx-test-message-id-3@hiretual.comgt;",  "In-Reply-To": "lt;xxx-test-message-id-1@hiretual.comgt;",  "References": "lt;xxx-test-message-id-1@hiretual.comgt;"  }  }  ],  "from": {  "email": "from-xxx@xxxx.xxx.com",  "name": "from-xxx"  },  "reply_to": {  "email": "random-email-address-1@xx-xxx.testhtm.com ",  "name": "from-xxxx"  },  "subject": "Test SG 1",  "content": [  {  "type": "text/html",  "value": "lt;pgt;Hello 3 from Twilio SendGrid!lt;/pgt;lt;pgt;%open-track%lt;/pgt;lt;a href='https://www.google.com'gt;Click herelt;/agt;"  }  ],  "tracking_settings": {  "click_tracking": {  "enable": true,  "enable_text": false  },  "open_tracking": {  "enable": true,  "substitution_tag": "%open-track%"  }  } }  

Это не сработало:

 -------------------------------------------------------------------------------------------- [2021-12-06T09:46:20.898Z][info] service=standalone-webhooks|type=sendgrid-inbound-parse|content= /POST /sendgrid-event/webhook [2021-12-06T09:46:20.899Z][info] service=standalone-webhooks|type=sendgrid-inbound-parse|content=[{"email":"12345@qq.com","event":"processed","send_at":0,"sg_event_id":"cHJvY2Vzc2VkLTI0MjM5NTY4LWxvb3ZzSXByVFUyZ0Z4aUprSHRHbVEtMA","sg_message_id":"loovsIprTU2gFxiJkHtGmQ.filterdrecv-7bc86b958d-gt6pz-1-61ADDBE3-E.0","smtp-id":"lt;xiao-test-message-id-3@hiretual.comgt;","timestamp":1638783971},{"email":"12345@qq.com","event":"delivered","ip":"50.31.49.42","response":"250 OK: queued as.","sg_event_id":"ZGVsaXZlcmVkLTAtMjQyMzk1NjgtbG9vdnNJcHJUVTJnRnhpSmtIdEdtUS0w","sg_message_id":"loovsIprTU2gFxiJkHtGmQ.filterdrecv-7bc86b958d-gt6pz-1-61ADDBE3-E.0","smtp-id":"lt;xiao-test-message-id-3@hiretual.comgt;","timestamp":1638783974,"tls":1}] [2021-12-06T09:46:20.919Z][error] service=standalone-webhooks|type=sendgrid-inbound-parse|content=Unauthorized: Host,0b57-52-8-30-104.ngrok.io,User-Agent,SendGrid Event API,Content-Length,634,Accept-Encoding,gzip,Content-Type,application/json;charset=utf-8,X-Forwarded-For,167.89.119.29,X-Forwarded-Proto,https,X-Twilio-Email-Event-Webhook-Signature,MEUCIQD/rRwu4YRS5euzXaYfJl7gcekDNVSAhoIBoSFjb5BS1gIgG15aET6uZHax6pt8YloWv8spYFNLXqX2CT0t6LHF mY=,X-Twilio-Email-Event-Webhook-Timestamp,1638783980