Echo server/AutoHotkey Client

From Rosetta Code

This is a client for Echo Server written in AutoHotkey.

echoclient.ahk

#SingleInstance OFF
Network_Port = 12321
Network_Address = 127.0.0.1
NewData := false
DataReceived =
GoSub, Connection_Init
loop
gosub guisend
return
 
guisend:
inputbox, SendText
SendData(socket,SendText)
SentText =
return
 
Connection_Init:
OnExit, ExitSub
 
socket := ConnectToAddress(Network_Address, Network_Port)
if socket = -1
ExitApp
 
Process, Exist
DetectHiddenWindows On
ScriptMainWindowId := WinExist("ahk_class AutoHotkey ahk_pid " . ErrorLevel)
DetectHiddenWindows Off
 
NotificationMsg = 0x5556
OnMessage(NotificationMsg, "ReceiveData")
 
FD_READ = 1
FD_CLOSE = 32
if DllCall("Ws2_32\WSAAsyncSelect", "UInt", socket,
"UInt", ScriptMainWindowId, "UInt", NotificationMsg, "Int",
FD_READ|FD_CLOSE)
{
MsgBox % "WSAAsyncSelect() indicated Winsock error "
. DllCall("Ws2_32\WSAGetLastError")
ExitApp
}
 
return
 
 
ConnectToAddress(IPAddress, Port)
{
VarSetCapacity(wsaData, 32)
result := DllCall("Ws2_32\WSAStartup", "UShort", 0x0002, "UInt", &wsaData)
if ErrorLevel
{
MsgBox % "WSAStartup() could not be called due to error %ErrorLevel%. "
. "Winsock 2.0 or higher is required."
return -1
}
if result
{
MsgBox % "WSAStartup() indicated Winsock error "
. DllCall("Ws2_32\WSAGetLastError")
return -1
}
AF_INET = 2
SOCK_STREAM = 1
IPPROTO_TCP = 6
socket := DllCall("Ws2_32\socket", "Int", AF_INET,
"Int", SOCK_STREAM, "Int", IPPROTO_TCP)
if socket = -1
{
MsgBox % "socket() indicated Winsock error "
. DllCall("Ws2_32\WSAGetLastError")
return -1
}
SizeOfSocketAddress = 16
VarSetCapacity(SocketAddress, SizeOfSocketAddress)
InsertInteger(2, SocketAddress, 0, AF_INET)
InsertInteger(DllCall("Ws2_32\htons", "UShort", Port), SocketAddress, 2, 2)
InsertInteger(DllCall("Ws2_32\inet_addr", "Str", IPAddress),
SocketAddress, 4, 4)
if DllCall("Ws2_32\connect", "UInt", socket,
"UInt", &SocketAddress, "Int", SizeOfSocketAddress)
{
MsgBox % "connect() indicated Winsock error "
. DllCall("Ws2_32\WSAGetLastError") . "?"
return -1
}
return socket
}
 
ReceiveData(wParam, lParam)
{
global DataReceived
global NewData
socket := wParam
ReceivedDataSize = 4096
Loop
{
VarSetCapacity(ReceivedData, ReceivedDataSize, 0)
ReceivedDataLength := DllCall("Ws2_32\recv", "UInt", socket,
"Str", ReceivedData, "Int", ReceivedDataSize, "Int", 0)
if ReceivedDataLength = 0
ExitApp
if ReceivedDataLength = -1
{
WinsockError := DllCall("Ws2_32\WSAGetLastError")
if WinsockError = 10035
{
DataReceived = %TempDataReceived%
NewData := true
return 1
}
if WinsockError <> 10054
MsgBox % "recv() indicated Winsock error " . WinsockError
ExitApp
}
if (A_Index = 1)
TempDataReceived =
TempDataReceived = %TempDataReceived%%ReceivedData%
}
return 1
}
 
SendData(wParam,SendData)
{
socket := wParam
SendDataSize := VarSetCapacity(SendData)
SendDataSize += 1
sendret := DllCall("Ws2_32\send", "UInt", socket,
"Str", SendData, "Int", SendDatasize, "Int", 0)
}
 
InsertInteger(pInteger, ByRef pDest, pOffset = 0, pSize = 4)
{
Loop %pSize%
DllCall("RtlFillMemory", "UInt", &pDest + pOffset + A_Index-1,
"UInt", 1, "UChar", pInteger >> 8*(A_Index-1) & 0xFF)
}
 
ReceiveProcedure:
if NewData
GuiControl, , ReceivedText, %DataReceived%
NewData := false
Return
 
ExitSub:
DllCall("Ws2_32\WSACleanup")
ExitApp