本帖最后由 wsycharles0o 于 2010-8-26 21:44 编辑
今天甚是郁闷...
非常郁闷....
发现我纠结了3天的程序就错在这对倒霉的符号上
大家可以试下如下语句：If "" = 0 Then
Msgbox(0,"","就是相等嘛！")
Endif
那大家再试下帮助文件中:
TCPRecv()函数的例子程序
把79行的""改成0，
就是那个If $recv <> "" 改成If $recv <> 0
程序就说什么也不工作了....
我做个聊天器，就这一符号，弄得我杯具了三天...
谁能告诉我这""和0到底有啥不同？？？
Ps.TCPRecv()函数的例子程序和TCPSend()函数的例子程序是一对，互相工作：
TCPRecv()函数例子程序:#include <GUIConstantsEx.au3>
Opt('MustDeclareVars', 1)
;==============================================
;==============================================
;SERVER!! Start Me First !!!!!!!!!!!!!!!
;==============================================
;==============================================
Example()
Func Example()
; Set Some reusable info
; Set your Public IP address (@IPAddress1) here.
; Local $szServerPC = @ComputerName
; Local $szIPADDRESS = TCPNameToIP($szServerPC)
Local $szIPADDRESS = @IPAddress1
Local $nPORT = 33891
Local $MainSocket, $GOOEY, $edit, $ConnectedSocket, $szIP_Accepted
Local $msg, $recv,$test=0
; Start The TCP Services
;==============================================
$test=TCPStartup()
MsgBox(0,"","test:"&$test)
; Create a Listening "SOCKET".
; Using your IP Address and Port 33891.
;==============================================
$MainSocket = TCPListen($szIPADDRESS, $nPORT)
MsgBox(0,"TCP","Socket1:"&$MainSocket)
; If the Socket creation fails, exit.
If $MainSocket = -1 Then Exit
; Create a GUI for messages
;==============================================
$GOOEY = GUICreate("My Server (IP: " & $szIPADDRESS & ")", 300, 200)
$edit = GUICtrlCreateEdit("", 10, 10, 280, 180)
GUISetState()
; Initialize a variable to represent a connection
;==============================================
$ConnectedSocket = -1
;Wait for and Accept a connection
;==============================================
Do
$ConnectedSocket = TCPAccept($MainSocket)
Until $ConnectedSocket <> -1
MsgBox(0,"TCP","Socket2:"&$ConnectedSocket)
; Get IP of client connecting
$szIP_Accepted = SocketToIP($ConnectedSocket)
MsgBox(0,"...",$ConnectedSocket)
; GUI Message Loop
;==============================================
While 1
$msg = GUIGetMsg()
; GUI Closed
;--------------------
If $msg = $GUI_EVENT_CLOSE Then ExitLoop
; Try to receive (up to) 2048 bytes
;----------------------------------------------------------------
$recv = TCPRecv($ConnectedSocket, 2048)
; If the receive failed with @error then the socket has disconnected
;----------------------------------------------------------------
If @error Then ExitLoop
; Update the edit control with what we have received
;----------------------------------------------------------------
If $recv <> "" Then GUICtrlSetData($edit, _
$szIP_Accepted & " > " & $recv & @CRLF & GUICtrlRead($edit))
WEnd
If $ConnectedSocket <> -1 Then TCPCloseSocket($ConnectedSocket)
TCPShutdown()
EndFunc ;==>Example
; Function to return IP Address from a connected socket.
;----------------------------------------------------------------------
Func SocketToIP($SHOCKET)
Local $sockaddr, $aRet
$sockaddr = DllStructCreate("short;ushort;uint;char[8]")
$aRet = DllCall("Ws2_32.dll", "int", "getpeername", "int", $SHOCKET, _
"ptr", DllStructGetPtr($sockaddr), "int*", DllStructGetSize($sockaddr))
If Not @error And $aRet[0] = 0 Then
$aRet = DllCall("Ws2_32.dll", "str", "inet_ntoa", "int", DllStructGetData($sockaddr, 3))
If Not @error Then $aRet = $aRet[0]
Else
$aRet = 0
EndIf
$sockaddr = 0
Return $aRet
EndFunc ;==>SocketToIP
Opt('MustDeclareVars', 1)
;==============================================
;==============================================
;CLIENT! Start Me after starting the SERVER!!!!!!!!!!!!!!!
;==============================================
;==============================================
Example()
Func Example()
; Set Some reusable info
;--------------------------
Local $ConnectedSocket, $szData
; Set $szIPADDRESS to wherever the SERVER is. We will change a PC name into an IP Address
; Local $szServerPC = @ComputerName
; Local $szIPADDRESS = TCPNameToIP($szServerPC)
Local $szIPADDRESS = @IPAddress1
Local $nPORT = 33891
MsgBox(0,"TCP TESTING",$szIPADDRESS)
; Start The TCP Services
;==============================================
TCPStartup()
; Initialize a variable to represent a connection
;==============================================
$ConnectedSocket = -1
;Attempt to connect to SERVER at its IP and PORT 33891
;=======================================================
$ConnectedSocket = TCPConnect($szIPADDRESS, $nPORT)
; If there is an error... show it
If @error Then
MsgBox(4112, "Error", "TCPConnect failed with WSA error: " & @error)
; If there is no error loop an inputbox for data
; to send to the SERVER.
Else
;Loop forever asking for data to send to the SERVER
While 1
; InputBox for data to transmit
$szData = InputBox("Data for Server", @LF & @LF & "Enter data to transmit to the SERVER:")
; If they cancel the InputBox or leave it blank we exit our forever loop
If @error Or $szData = "" Then ExitLoop
; We should have data in $szData... lets attempt to send it through our connected socket.
TCPSend($ConnectedSocket, $szData)
; If the send failed with @error then the socket has disconnected
;----------------------------------------------------------------
If @error Then ExitLoop
WEnd
EndIf
EndFunc ;==>Example
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