question about tcp connection

[Netwolf]

hi guys. 

im working on a program that can communicate over a tcp connection. 

for now only client is supposed to listen the other will send data. 

according to that data the first client will then react. 

there will only be one type of data:  different string values. 

my question is whether i need to close the socket after receiving data in order to send new data. 

or if i can just keep the socket open and basically loop tcpsend()  once the tcpconnect() is established since its the same connection. 

so basic structure : 

tcpstartup()

tcplisten()

tcpaccept() ____________________tcpconnect()

loop

tcprecv()_____________________tcpsend()

until "whatever " or tcpaccept = -1

tcpclosesocket(tcpaccept())

tcpclosesocket(tcplisten())

tcpshutdown()

[Celtic88]