Client-Server chatting in Lua - networking

Question

Server Program
local socket = require("socket")
local server = socket.try(socket.bind("*", 1234))
local ip, port = server:getsockname()
while 1 do
local client = server:accept()
client:settimeout(10)
local line, err = client:receive()
print (line)
print("Enter input:")
if not err then client:send(io.read().."\n") end
client:close()
end
Client Program
local host, port = "*", 1234
local socket = require("socket")
local tcp = assert(socket.tcp())
tcp:connect(host, port);
tcp:send("Connection Established\n");
while 1 do
local s, status, partial = tcp:receive()
print(s or partial)
print("Enter input:")
tcp:send(io.read().."\n");
if status == "closed" then break end
end
tcp:close()
The server program can send the message to client but the client can't send message to server. Is there any way to do it..??

Answer 1

I don't have enough reputation to comment, but after 10 seconds or the server sending a message, whichever comes first, the server closes the connection. The client doesn't attempt to send a message until after the server has sent a message, and the way you've written your code the server immediately closes the connection at this point. If you want the two to communicate you'd be better off accepting the client outside of the loop like so:
Server Program
local socket = require("socket")
local server = socket.try(socket.bind("*", 1234))
local ip, port = server:getsockname()
local client = server:accept()
client:settimeout(10)
while 1 do
local line, err = client:receive()
print (line)
print("Enter input:")
if not err then client:send(io.read().."\n") end
end
client:close()
Now, this brings up the issue in which the server lacks the code to realize a client has disconnected and needs to find a new client, however it shouldn't be that difficult to implement.