request.cr

require "http/client"
require "json"

client = HTTP::Client.new "https://www.google.com", 443, true

response = client.get "/"

# Crystal 0.14.2
# crystal run request.cr 
# Outputs:
# getaddrinfo: nodename nor servname provided, or not known (Socket::Error)
# [4413819154] *CallStack::unwind:Array(Pointer(Void)) +82
# [4413819057] *CallStack#initialize<CallStack>:Array(Pointer(Void)) +17
# [4413819016] *CallStack::new:CallStack +40
# [4413991737] *Socket::Error@Exception#initialize<Socket::Error, String, Nil>:CallStack +41
# [4413991668] *Socket::Error::new<String>:Socket::Error +100
# [4413985467] *TCPSocket#initialize<TCPSocket, String, Int32, Float64?, Float64?>:Nil +1835
# [4413983597] *TCPSocket::new<String, Int32, Float64?, Float64?>:TCPSocket +221
# [4413975630] *HTTP::Client#socket<HTTP::Client>:(OpenSSL::SSL::Socket | TCPSocket+) +110
# [4413975083] *HTTP::Client#exec_internal<HTTP::Client, HTTP::Request>:HTTP::Client::Response +43
# [4413975010] *HTTP::Client#exec<HTTP::Client, HTTP::Request>:HTTP::Client::Response +34
# [4413974477] *HTTP::Client#exec<HTTP::Client, String, String, Nil, Nil>:HTTP::Client::Response +29
# [4413974439] *HTTP::Client#get<HTTP::Client, String>:HTTP::Client::Response +39
# [4413780538] __crystal_main +37882
# [4413789720] main +40

request_correct.cr

# HTTP::Client.new does not accept a uri string, but a host only, so it should not have the protocol

require "http/client"
require "json"

client = HTTP::Client.new "www.google.com", 443, true

response = client.get "/"

@dtakahas remove the protocol of HTTP::Client.new, is expecting host, port and ssl option, not URI:

https://gist.github.com/luislavena/72c43ed5d9b6096cc8de