ruby的TCPSocket用read/write不能通信，用gets/puts就可以

Question

server
[code="java"]

require 'socket'

server = TCPServer.open('127.0.0.1',2000)

client = server.accept

loop {

str=client.read
puts str
client.write(str)

}
client.close

[/code]

client
[code="java"]

require 'socket'

host = '127.0.0.1'
port = 2000
msg="\0x48\0x0a\0x0d"
s = TCPSocket.open(host, port)
s.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
loop do
send = s.write(msg)
s.flush
puts msg
resp = s.read
puts resp
sleep 1
end

[/code]
按照这上面说的
http://stackoverflow.com/questions/1147852/ruby-tcpsocket-write-doesnt-work-but-puts-does
加上s.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1) 和flush 也不管用

Answer 1

client.read 改成 recv(65535) 就OK了。

socket的read和recv函数的区别: http://www.cnblogs.com/heiyue/archive/2011/08/03/2126622.html