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# -*- encoding: binary -*-
require_relative '../spec_helper'
require_relative '../fixtures/classes'
describe "BasicSocket#recv" 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?
ScratchPad.clear
end
it "receives a specified number of bytes of a message from another socket" do
t = Thread.new do
client = @server.accept
ScratchPad.record client.recv(10)
client.recv(1) # this recv is important
client.close
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.send('hello', 0)
socket.close
t.join
ScratchPad.recorded.should == 'hello'
end
it "accepts flags to specify unusual receiving behaviour" do
t = Thread.new do
client = @server.accept
# in-band data (TCP), doesn't receive the flag.
ScratchPad.record client.recv(10)
# this recv is important (TODO: explain)
client.recv(10)
client.close
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.send('helloU', Socket::MSG_OOB)
socket.shutdown(1)
t.join
socket.close
ScratchPad.recorded.should == 'hello'
end
it "gets lines delimited with a custom separator" do
t = Thread.new do
client = @server.accept
ScratchPad.record client.gets("\377")
# this call is important (TODO: explain)
client.gets(nil)
client.close
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.write("firstline\377secondline\377")
socket.close
t.join
ScratchPad.recorded.should == "firstline\377"
end
it "allows an output buffer as third argument" do
socket = TCPSocket.new('127.0.0.1', @port)
socket.write("data")
client = @server.accept
buffer = +"foo"
begin
client.recv(4, 0, buffer).should.equal?(buffer)
ensure
client.close
end
buffer.should == "data"
socket.close
end
it "preserves the encoding of the given buffer" do
socket = TCPSocket.new('127.0.0.1', @port)
socket.write("data")
client = @server.accept
buffer = ''.encode(Encoding::ISO_8859_1)
begin
client.recv(4, 0, buffer)
ensure
client.close
end
buffer.encoding.should == Encoding::ISO_8859_1
socket.close
end
end
describe 'BasicSocket#recv' do
SocketSpecs.each_ip_protocol do |family, ip_address|
before do
@server = Socket.new(family, :DGRAM)
@client = Socket.new(family, :DGRAM)
end
after do
@client.close
@server.close
end
describe 'using an unbound socket' do
it 'blocks the caller' do
-> { @server.recv(4) }.should block_caller
end
end
describe 'using a bound socket' do
before do
@server.bind(Socket.sockaddr_in(0, ip_address))
end
describe 'without any data available' do
it 'blocks the caller' do
-> { @server.recv(4) }.should block_caller
end
end
describe 'with data available' do
before do
@client.connect(@server.getsockname)
end
it 'reads the given amount of bytes' do
@client.write('hello')
@server.recv(2).should == 'he'
end
it 'reads the given amount of bytes when it exceeds the data size' do
@client.write('he')
@server.recv(6).should == 'he'
end
it 'blocks the caller when called twice without new data being available' do
@client.write('hello')
@server.recv(2).should == 'he'
-> { @server.recv(4) }.should block_caller
end
it 'takes a peek at the data when using the MSG_PEEK flag' do
@client.write('hello')
@server.recv(2, Socket::MSG_PEEK).should == 'he'
@server.recv(2).should == 'he'
end
end
end
end
end
describe "BasicSocket#recv" 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
t = Thread.new do
client = @server.accept
client.recv(10)
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
t.value.should == ""
end
end
ruby_version_is "3.3" do
it "returns nil on a closed stream socket" do
t = Thread.new do
client = @server.accept
client.recv(10)
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
t.value.should be_nil
end
end
end
describe "datagram socket" do
SocketSpecs.each_ip_protocol do |family, ip_address|
before :each do
@server = UDPSocket.new(family)
@client = UDPSocket.new(family)
end
after :each do
@server.close unless @server.closed?
@client.close unless @client.closed?
end
it "returns empty String" do
@server.bind(ip_address, 0)
addr = @server.connect_address
@client.connect(addr.ip_address, addr.ip_port)
@client.send('', 0)
@server.recv(1).should == ""
end
end
end
end
end
|
