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require_relative '../spec_helper'
require_relative '../fixtures/classes'
describe "Socket::BasicSocket#recv_nonblock" do
SocketSpecs.each_ip_protocol do |family, ip_address|
before :each do
@s1 = Socket.new(family, :DGRAM)
@s2 = Socket.new(family, :DGRAM)
end
after :each do
@s1.close unless @s1.closed?
@s2.close unless @s2.closed?
end
platform_is_not :windows do
describe 'using an unbound socket' do
it 'raises an exception extending IO::WaitReadable' do
-> { @s1.recv_nonblock(1) }.should raise_error(IO::WaitReadable)
end
end
end
it "raises an exception extending IO::WaitReadable if there's no data available" do
@s1.bind(Socket.pack_sockaddr_in(0, ip_address))
-> {
@s1.recv_nonblock(5)
}.should raise_error(IO::WaitReadable) { |e|
platform_is_not :windows do
e.should be_kind_of(Errno::EAGAIN)
end
platform_is :windows do
e.should be_kind_of(Errno::EWOULDBLOCK)
end
}
end
it "returns :wait_readable with exception: false" do
@s1.bind(Socket.pack_sockaddr_in(0, ip_address))
@s1.recv_nonblock(5, exception: false).should == :wait_readable
end
it "receives data after it's ready" do
@s1.bind(Socket.pack_sockaddr_in(0, ip_address))
@s2.send("aaa", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
@s1.recv_nonblock(5).should == "aaa"
end
it "allows an output buffer as third argument" do
@s1.bind(Socket.pack_sockaddr_in(0, ip_address))
@s2.send("data", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
buffer = +"foo"
@s1.recv_nonblock(5, 0, buffer).should.equal?(buffer)
buffer.should == "data"
end
it "preserves the encoding of the given buffer" do
@s1.bind(Socket.pack_sockaddr_in(0, ip_address))
@s2.send("data", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
buffer = ''.encode(Encoding::ISO_8859_1)
@s1.recv_nonblock(5, 0, buffer)
buffer.encoding.should == Encoding::ISO_8859_1
end
it "does not block if there's no data available" do
@s1.bind(Socket.pack_sockaddr_in(0, ip_address))
@s2.send("a", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
@s1.recv_nonblock(1).should == "a"
-> {
@s1.recv_nonblock(5)
}.should raise_error(IO::WaitReadable)
end
end
SocketSpecs.each_ip_protocol do |family, ip_address|
describe 'using a connected but not bound socket' do
before do
@server = Socket.new(family, :STREAM)
end
after do
@server.close
end
it "raises Errno::ENOTCONN" do
-> { @server.recv_nonblock(1) }.should raise_error { |e|
[Errno::ENOTCONN, Errno::EINVAL].should.include?(e.class)
}
-> { @server.recv_nonblock(1, exception: false) }.should raise_error { |e|
[Errno::ENOTCONN, Errno::EINVAL].should.include?(e.class)
}
end
end
end
end
describe "Socket::BasicSocket#recv_nonblock" do
context "when recvfrom(2) returns 0 (if no messages are available to be received and the peer has performed an orderly shutdown)" do
describe "stream socket" do
before :each do
@server = TCPServer.new('127.0.0.1', 0)
@port = @server.addr[1]
end
after :each do
@server.close unless @server.closed?
end
ruby_version_is ""..."3.3" do
it "returns an empty String on a closed stream socket" do
ready = false
t = Thread.new do
client = @server.accept
Thread.pass while !ready
begin
client.recv_nonblock(10)
rescue IO::EAGAINWaitReadable
retry
end
ensure
client.close if client
end
Thread.pass while t.status and t.status != "sleep"
t.status.should_not be_nil
socket = TCPSocket.new('127.0.0.1', @port)
socket.close
ready = true
t.value.should == ""
end
end
ruby_version_is "3.3" do
it "returns nil on a closed stream socket" do
ready = false
t = Thread.new do
client = @server.accept
Thread.pass while !ready
begin
client.recv_nonblock(10)
rescue IO::EAGAINWaitReadable
retry
end
ensure
client.close if client
end
Thread.pass while t.status and t.status != "sleep"
t.status.should_not be_nil
socket = TCPSocket.new('127.0.0.1', @port)
socket.close
ready = true
t.value.should be_nil
end
end
end
end
end
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