Socket was remotely closed (SocketError)

[jan]

The basic synchronous call from the README works, but it breaks when I change the host from nghttp2.org to the one that i actually want to request from:

# create a client
# client = NetHttp2::Client.new("http://nghttp2.org") # <- works
client = NetHttp2::Client.new("http://httpbin.org") # <- does not work; same with other hosts

# send request
response = client.call(:get, '/')

# ...

#<Thread:0x00007f95a592c4e8@/Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:112 run> terminated with exception (report_on_exception is true):
Traceback (most recent call last):
	5: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:114:in `block (2 levels) in ensure_open'
	4: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:142:in `socket_loop'
	3: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:142:in `loop'
	2: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:145:in `block in socket_loop'
	1: from <internal:prelude>:73:in `read_nonblock'
<internal:prelude>:73:in `__read_nonblock': end of file reached (EOFError)
	2: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:113:in `block (2 levels) in ensure_open'
	1: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:119:in `rescue in block (2 levels) in ensure_open'
/Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:134:in `callback_or_raise': Socket was remotely closed (SocketError)
Traceback (most recent call last):
	5: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:114:in `block (2 levels) in ensure_open'
	4: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:142:in `socket_loop'
	3: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:142:in `loop'
	2: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:145:in `block in socket_loop'
	1: from <internal:prelude>:73:in `read_nonblock'
<internal:prelude>:73:in `__read_nonblock': end of file reached (EOFError)
	2: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:113:in `block (2 levels) in ensure_open'
	1: from /Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:119:in `rescue in block (2 levels) in ensure_open'
/Library/Ruby/Gems/2.6.0/gems/net-http2-0.18.4/lib/net-http2/client.rb:134:in `callback_or_raise': Socket was remotely closed (SocketError)

MacOS 10.15.7
ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin19]

[akostadinov]

Are you sure you don't have network problems or your ip is blacklisted or something? Works for me and probably for many other people with random HTTP2 enabled web servers.