'use strict';

const common = require('../common');
if (!common.hasCrypto)
  common.skip('missing crypto');
const assert = require('assert');
const http2 = require('http2');
const Countdown = require('../common/countdown');

const server = http2.createServer();

server.on('stream', common.mustCall((stream) => {
  stream.respond();
  stream.end();
}));

server.listen(0, common.mustCall(() => {
  const client = http2.connect(`http://localhost:${server.address().port}`);

  const countdown = new Countdown(2, () => {
    server.close();
    client.close();
  });

  // Request 1 will fail because there are two content-length header values
  assert.throws(
    () => {
      client.request({
        ':method': 'POST',
        'content-length': 1,
        'Content-Length': 2
      });
    }, {
      code: 'ERR_HTTP2_HEADER_SINGLE_VALUE',
      name: 'TypeError',
      message: 'Header field "content-length" must only have a single value'
    }
  );

  {
    // Request 2 will succeed
    const req = client.request({
      ':method': 'POST',
      'content-length': 1
    });
    req.resume();
    req.on('end', common.mustCall());
    req.on('close', common.mustCall(() => countdown.dec()));
    req.end('a');
  }

  {
    // Request 3 will fail because  nghttp2 does not allow the content-length
    // header to be set for non-payload bearing requests...
    const req = client.request({ 'content-length': 1 });
    req.resume();
    req.on('end', common.mustNotCall());
    req.on('close', common.mustCall(() => countdown.dec()));
    req.on('error', common.expectsError({
      code: 'ERR_HTTP2_STREAM_ERROR',
      name: 'Error',
      message: 'Stream closed with error code NGHTTP2_PROTOCOL_ERROR'
    }));
  }
}));