Issue #14466 has been reported by sk (SK Liew).

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Bug #14466: Errno::ECONNRESET or Errno::EPIPE raised instead of HTTPResponse returned when POSTing with large body
https://bugs.ruby-lang.org/issues/14466

* Author: sk (SK Liew)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-linux], ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
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Using `net/http`, when trying to POST to an endpoint with a large body, Errno::ECONNRESET or Errno::EPIPE would be raised.

How to reproduce:

1. In a terminal, run `ruby -run -e httpd -- -p 3000 .` to run a HTTP webserver.
2. In another terminal, run the code below:

~~~ ruby
require 'net/http'
def post_with_size(dest_url, size)
  string_to_send = ' ' * size

  uri_to_post = URI(dest_url)
  request = Net::HTTP::Post.new(uri_to_post)
  request.body = string_to_send

  http_client = Net::HTTP.new(uri_to_post.host, uri_to_post.port)
  http_client.use_ssl = (uri_to_post.scheme == 'https')
  response = http_client.request(request)
  puts response.body
  puts response.code
  puts response
end

dest_url = 'http://localhost:3000'
size = 6000000
post_with_size(dest_url, size)

~~~

Expected: HTTPResponse with status code of 404.
Observed: Errno::ECONNRESET or Errno::EPIPE error.




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