Bug #11179: Inconsistent Addrinfo parsing a port number

• Status: Third Party's Issue
• Assignee: -
• Target version: -
• ruby -v: ruby 2.3.0dev (2015-05-25 trunk 50637) [x86_64-linux]
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN

[ibenza (Shin'ya Ueoka)]

In the case of the following code, ip_port returns 34464 because the number 99999 is cast as short int.
Is the result expected?

require 'socket'
Addrinfo.tcp('', 99999).ip_port    # => 34463

Even if the above behavior is correct, ip_port should return 65535 in the following code. But actually, Addrinfo raises an exception because -1 is parsed as service name. This behavior is inconsistent with the above.

require 'socket'
Addrinfo.tcp('', -1).ip_port     # => Servname not supported for ai_socktype (SocketError)

[ibenza (Shin'ya Ueoka)]

• Subject changed from Addrinfo parsing a port number to Inconsistent Addrinfo parsing a port number

[akr (Akira Tanaka)]

• Status changed from Open to Third Party's Issue

The behavior is inherited from getaddrinfo() function in libc.
So it is difficult to fix the problem in Ruby.