[go-nuts] two golang processes communicate with tcp

Hello ,everyone. I have two golang programes. One is server,the other is
client.

server code:
   http://play.golang.org/p/674MybCISh

client code:
   http://play.golang.org/p/ND8T_UcZdR

when they are running, cpu will reach to 100%.After print some messages ,
server will print ' WSARecv tcp 127.0.0.1:20006: An existing connection
was forcibly closed by the remote host.

And the client also print ' ConnectEx tcp: No connection could be made
because the target machine actively refused it '.

The code has any problem? Thanks

golang version :1.3
OS: win7 64bit