Unable to find parser given the encoding and headers provided

[deewhyweb]

Using the latest code from master, I'm creating an event from Kafka which is coming into my app as:
body: "{"specversion":"1.0","id":"3","type":"type","source":"123"}"

headers: {"host":"event-display.kafka.svc.cluster.local","user-agent":"Go-http-client/1.1","content-length":"59","accept-encoding":"gzip","ce-id":"partition:1/offset:23","ce-source":"/apis/v1/namespaces/kafka/kafkasources/kafka-source#knative-demo-topic","ce-specversion":"1.0","ce-subject":"partition:1#23","ce-time":"2020-05-07T14:16:30.245Z","ce-type":"dev.knative.kafka.event","forwarded":"for=10.131.0.72;proto=http","k-proxy-request":"activator","kourier-random-header":"558c917a-906d-11ea-96ab-0a580a830047","traceparent":"00-73df58d7c1383e17dabe515dfd68d05a-b00799e628f49cbe-00","x-envoy-expected-rq-timeout-ms":"600000","x-forwarded-for":"10.131.0.72, 10.128.2.99","x-forwarded-proto":"http","x-request-id":"d3649c1b-a968-40bf-a9da-3e853abc0c8b"}

The code I'm using is as follows:

const express = require('express');
const app = express();
const { HTTPReceiver, CloudEvent } = require('cloudevents-sdk');

const receiver = new HTTPReceiver();
app.use((req, res, next) => {
  let data = "";

  //req.setEncoding("utf8");
  req.on("data", function(chunk) {
      data += chunk;
  });
  req.on("end", function() {
      req.body = data;
      next();
  });
});
app.post('/', (req, res) => {
  console.log('Version 1.20');
  console.log('body:',JSON.stringify(req.body))
  console.log('headers:',JSON.stringify(req.headers))
  try {
    let myevent = receiver.accept(req.headers,req.body);
    console.log(JSON.stringify(myevent))
    res.status(201).send("Event Accepted");

  } catch(err) {
    // TODO deal with errors
    console.error(err);
    res.status(415)
          .header("Content-Type", "application/json")
          .send(JSON.stringify(err));
  }
});
const port = process.env.PORT || 8080;
app.listen(port, () => {
  console.log('Hello world listening on port', port);
});

I receive the following error:

TypeError: Cannot read property 'parse' of undefined
at BinaryHTTPReceiver.parse (/usr/src/app/node_modules/cloudevents-sdk/lib/bindings/http/receiver_binary.js:115:9)
at Receiver.parse (/usr/src/app/node_modules/cloudevents-sdk/lib/bindings/http/receiver_binary_1.js:111:24)
at HTTPReceiver.accept (/usr/src/app/node_modules/cloudevents-sdk/lib/bindings/http/http_receiver.js:26:40)
at /usr/src/app/index.js:26:28
at Layer.handle [as handle_request] (/usr/src/app/node_modules/express/lib/router/layer.js:95:5)
at next (/usr/src/app/node_modules/express/lib/router/route.js:137:13)
at Route.dispatch (/usr/src/app/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/usr/src/app/node_modules/express/lib/router/layer.js:95:5)
at /usr/src/app/node_modules/express/lib/router/index.js:281:22
at Function.process_params (/usr/src/app/node_modules/express/lib/router/index.js:335:12)

[lance]

Related: feat: expose a mode and version agnostic event receiver
Related: fix: make application/json the default content type in binary mode