How to handle request and reply by user via THttpServer?

mvala · January 10, 2025, 6:11am

I like all the functionality of THttpServer documented here., but additionaly i would like to handle some request by myself. Is it possible? I would like to do something similar as shown in bellow

github.com

knative/docs/blob/main/code-samples/serving/hello-world/helloworld-nodejs/index.js

const express = require('express');
const app = express();

app.get('/', (req, res) => {
  console.log('Hello world received a request.');

  const target = process.env.TARGET || 'World';
  res.send(`Hello ${target}!\n`);
});

const port = process.env.PORT || 8080;
app.listen(port, () => {
  console.log('Hello world listening on port', port);
});

Thank you very much

linev · January 10, 2025, 8:54am

Hi,

Most simple way for custom requests processing - implement THttpServer::MissedRequest(THttpCallArg *arg) in derived class.
Something like:

void TCustomHttpServer::MissedRequest(THttpCallArg *arg)
{
    if (!strcmp(arg->GetPathName(), "custom_path") &&
        !strcmp(arg->GetFileName(), "empty_object.json")) {
      arg->SetJsonContent("{}");
   } else {
      THttpServer::MissedRequest(arg);
   }
}

There are several methods in THttpCallArg class to set content and type of content for http requests.

Regards,
Sergey

mvala · January 10, 2025, 12:09pm

And what do i need to do to fill response? Should i fill arg with new values?

linev · January 10, 2025, 12:11pm

No, just set content and content type.
These values will be used when server replies http request.