E1M1 Posted January 20, 2013 Share Posted January 20, 2013 (edited) Hello I am having question about UDP. As we know UDP is connectionless so 1) $s = UDPBind("127.0.0.1", 1234) 2) $d = UDPRecv($s, 4096,1) 3) UDPSend($s,$d+something()) Now then question is: if $s has more than 1 connection, then how do I make sure that UDPSend sends it to right place? As it dont have any accept function $s could be con1, con2, ..., conN. As UDP udp is connectionless, there is no way to get socket info, but still if multiple clients connect from same IP and same port, and client specific info cannot and will not be included in packets, what do I do? But what if I want this packet to go con1 and that packet to go con2? How I should handle that? TCPRecv allows me to get IP, port, but that's not enough. However if i connect to server:1234 then it says incoming connection client:59939. Now is this port somewhat unique? it looks so. But I have no idea how to use that. Edited January 20, 2013 by E1M1 edited Link to comment Share on other sites More sharing options...
JohnOne Posted January 20, 2013 Share Posted January 20, 2013 "As we know UDP is connectionless" I certainly don't, can you explain what you mean by that. I'm quite sure UDP connects. UDPOpen() tells me that. AutoIt Absolute Beginners Require a serial Pause Script Video Tutorials by Morthawt ipify Monkey's are, like, natures humans. Link to comment Share on other sites More sharing options...
kylomas Posted January 20, 2013 Share Posted January 20, 2013 E1M1,There is an example of a multi-user UDP chat app kylomas Forum Rules Procedure for posting code "I like pigs. Dogs look up to us. Cats look down on us. Pigs treat us as equals." - Sir Winston Churchill Link to comment Share on other sites More sharing options...
E1M1 Posted January 20, 2013 Author Share Posted January 20, 2013 (edited) "As we know UDP is connectionless"I certainly don't, can you explain what you mean by that.I'm quite sure UDP connects. UDPOpen() tells me that.It means that differently from TCP you dont have connection. UDPRecv(UDPOpen(),...) would be like TCPRecv(TCPListen(),...)(You can't do that of course but that's to illustrate it) http://www.cyberciti.biz/faq/key-differences-between-tcp-and-udp-protocols/E1M1,There is an example of a multi-user UDP chat app kylomasThanks I'll look into that. Edited January 20, 2013 by E1M1 edited Link to comment Share on other sites More sharing options...
JohnOne Posted January 20, 2013 Share Posted January 20, 2013 I'm still not sure what you mean.UDPOpen() UDPSend() UDPRecv() AutoIt Absolute Beginners Require a serial Pause Script Video Tutorials by Morthawt ipify Monkey's are, like, natures humans. Link to comment Share on other sites More sharing options...
guinness Posted January 21, 2013 Share Posted January 21, 2013 (edited) I've managed to create a UDP multi-user chat client without the need for a separate server. Edited January 21, 2013 by guinness UDF List: _AdapterConnections() • _AlwaysRun() • _AppMon() • _AppMonEx() • _ArrayFilter/_ArrayReduce • _BinaryBin() • _CheckMsgBox() • _CmdLineRaw() • _ContextMenu() • _ConvertLHWebColor()/_ConvertSHWebColor() • _DesktopDimensions() • _DisplayPassword() • _DotNet_Load()/_DotNet_Unload() • _Fibonacci() • _FileCompare() • _FileCompareContents() • _FileNameByHandle() • _FilePrefix/SRE() • _FindInFile() • _GetBackgroundColor()/_SetBackgroundColor() • _GetConrolID() • _GetCtrlClass() • _GetDirectoryFormat() • _GetDriveMediaType() • _GetFilename()/_GetFilenameExt() • _GetHardwareID() • _GetIP() • _GetIP_Country() • _GetOSLanguage() • _GetSavedSource() • _GetStringSize() • _GetSystemPaths() • _GetURLImage() • _GIFImage() • _GoogleWeather() • _GUICtrlCreateGroup() • _GUICtrlListBox_CreateArray() • _GUICtrlListView_CreateArray() • _GUICtrlListView_SaveCSV() • _GUICtrlListView_SaveHTML() • _GUICtrlListView_SaveTxt() • _GUICtrlListView_SaveXML() • _GUICtrlMenu_Recent() • _GUICtrlMenu_SetItemImage() • _GUICtrlTreeView_CreateArray() • _GUIDisable() • _GUIImageList_SetIconFromHandle() • _GUIRegisterMsg() • _GUISetIcon() • _Icon_Clear()/_Icon_Set() • _IdleTime() • _InetGet() • _InetGetGUI() • _InetGetProgress() • _IPDetails() • _IsFileOlder() • _IsGUID() • _IsHex() • _IsPalindrome() • _IsRegKey() • _IsStringRegExp() • _IsSystemDrive() • _IsUPX() • _IsValidType() • _IsWebColor() • _Language() • _Log() • _MicrosoftInternetConnectivity() • _MSDNDataType() • _PathFull/GetRelative/Split() • _PathSplitEx() • _PrintFromArray() • _ProgressSetMarquee() • _ReDim() • _RockPaperScissors()/_RockPaperScissorsLizardSpock() • _ScrollingCredits • _SelfDelete() • _SelfRename() • _SelfUpdate() • _SendTo() • _ShellAll() • _ShellFile() • _ShellFolder() • _SingletonHWID() • _SingletonPID() • _Startup() • _StringCompact() • _StringIsValid() • _StringRegExpMetaCharacters() • _StringReplaceWholeWord() • _StringStripChars() • _Temperature() • _TrialPeriod() • _UKToUSDate()/_USToUKDate() • _WinAPI_Create_CTL_CODE() • _WinAPI_CreateGUID() • _WMIDateStringToDate()/_DateToWMIDateString() • Au3 script parsing • AutoIt Search • AutoIt3 Portable • AutoIt3WrapperToPragma • AutoItWinGetTitle()/AutoItWinSetTitle() • Coding • DirToHTML5 • FileInstallr • FileReadLastChars() • GeoIP database • GUI - Only Close Button • GUI Examples • GUICtrlDeleteImage() • GUICtrlGetBkColor() • GUICtrlGetStyle() • GUIEvents • GUIGetBkColor() • Int_Parse() & Int_TryParse() • IsISBN() • LockFile() • Mapping CtrlIDs • OOP in AutoIt • ParseHeadersToSciTE() • PasswordValid • PasteBin • Posts Per Day • PreExpand • Protect Globals • Queue() • Resource Update • ResourcesEx • SciTE Jump • Settings INI • SHELLHOOK • Shunting-Yard • Signature Creator • Stack() • Stopwatch() • StringAddLF()/StringStripLF() • StringEOLToCRLF() • VSCROLL • WM_COPYDATA • More Examples... Updated: 22/04/2018 Link to comment Share on other sites More sharing options...
Nunos Posted January 21, 2013 Share Posted January 21, 2013 I believe the difference between TCP and UDP is aknowldgements. TCP will send data and then wait for an AK back as the header in the next packet to confirm that it received the information. UDP just sends it where ever and assumes you received it. These two are referred to as connection and connectionless but I think it really boils down to how the sessions are established and whether or not aknowlegdgemetns are sent back to the server. Link to comment Share on other sites More sharing options...
kylomas Posted January 21, 2013 Share Posted January 21, 2013 @guinness - what is it called, searched your sig and examples...???? Forum Rules Procedure for posting code "I like pigs. Dogs look up to us. Cats look down on us. Pigs treat us as equals." - Sir Winston Churchill Link to comment Share on other sites More sharing options...
guinness Posted January 21, 2013 Share Posted January 21, 2013 @guinness - what is it called, searched your sig and examples...????I never uploaded it. You can find examples of this nature around the Forum though. UDF List: _AdapterConnections() • _AlwaysRun() • _AppMon() • _AppMonEx() • _ArrayFilter/_ArrayReduce • _BinaryBin() • _CheckMsgBox() • _CmdLineRaw() • _ContextMenu() • _ConvertLHWebColor()/_ConvertSHWebColor() • _DesktopDimensions() • _DisplayPassword() • _DotNet_Load()/_DotNet_Unload() • _Fibonacci() • _FileCompare() • _FileCompareContents() • _FileNameByHandle() • _FilePrefix/SRE() • _FindInFile() • _GetBackgroundColor()/_SetBackgroundColor() • _GetConrolID() • _GetCtrlClass() • _GetDirectoryFormat() • _GetDriveMediaType() • _GetFilename()/_GetFilenameExt() • _GetHardwareID() • _GetIP() • _GetIP_Country() • _GetOSLanguage() • _GetSavedSource() • _GetStringSize() • _GetSystemPaths() • _GetURLImage() • _GIFImage() • _GoogleWeather() • _GUICtrlCreateGroup() • _GUICtrlListBox_CreateArray() • _GUICtrlListView_CreateArray() • _GUICtrlListView_SaveCSV() • _GUICtrlListView_SaveHTML() • _GUICtrlListView_SaveTxt() • _GUICtrlListView_SaveXML() • _GUICtrlMenu_Recent() • _GUICtrlMenu_SetItemImage() • _GUICtrlTreeView_CreateArray() • _GUIDisable() • _GUIImageList_SetIconFromHandle() • _GUIRegisterMsg() • _GUISetIcon() • _Icon_Clear()/_Icon_Set() • _IdleTime() • _InetGet() • _InetGetGUI() • _InetGetProgress() • _IPDetails() • _IsFileOlder() • _IsGUID() • _IsHex() • _IsPalindrome() • _IsRegKey() • _IsStringRegExp() • _IsSystemDrive() • _IsUPX() • _IsValidType() • _IsWebColor() • _Language() • _Log() • _MicrosoftInternetConnectivity() • _MSDNDataType() • _PathFull/GetRelative/Split() • _PathSplitEx() • _PrintFromArray() • _ProgressSetMarquee() • _ReDim() • _RockPaperScissors()/_RockPaperScissorsLizardSpock() • _ScrollingCredits • _SelfDelete() • _SelfRename() • _SelfUpdate() • _SendTo() • _ShellAll() • _ShellFile() • _ShellFolder() • _SingletonHWID() • _SingletonPID() • _Startup() • _StringCompact() • _StringIsValid() • _StringRegExpMetaCharacters() • _StringReplaceWholeWord() • _StringStripChars() • _Temperature() • _TrialPeriod() • _UKToUSDate()/_USToUKDate() • _WinAPI_Create_CTL_CODE() • _WinAPI_CreateGUID() • _WMIDateStringToDate()/_DateToWMIDateString() • Au3 script parsing • AutoIt Search • AutoIt3 Portable • AutoIt3WrapperToPragma • AutoItWinGetTitle()/AutoItWinSetTitle() • Coding • DirToHTML5 • FileInstallr • FileReadLastChars() • GeoIP database • GUI - Only Close Button • GUI Examples • GUICtrlDeleteImage() • GUICtrlGetBkColor() • GUICtrlGetStyle() • GUIEvents • GUIGetBkColor() • Int_Parse() & Int_TryParse() • IsISBN() • LockFile() • Mapping CtrlIDs • OOP in AutoIt • ParseHeadersToSciTE() • PasswordValid • PasteBin • Posts Per Day • PreExpand • Protect Globals • Queue() • Resource Update • ResourcesEx • SciTE Jump • Settings INI • SHELLHOOK • Shunting-Yard • Signature Creator • Stack() • Stopwatch() • StringAddLF()/StringStripLF() • StringEOLToCRLF() • VSCROLL • WM_COPYDATA • More Examples... Updated: 22/04/2018 Link to comment Share on other sites More sharing options...
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