EldoS | Feel safer!

Software components for data protection, secure storage and transfer

UDP Broadcast with TElSocket

Also by EldoS: BizCrypto
Components for BizTalk® and SQL Server® Integration Services that let you securely store and transfer information in your business automation solutions.
#31430
Posted: 11/18/2014 18:14:24
by Erich Kuba (Standard support level)
Joined: 05/16/2013
Posts: 38

Hi there,

I'm busy converting all my applications to use your socket component so that I can port all my code to Android/iOS etc.

Anyway, I seem to be having a problem with UDP broadcasts not working. If I send the packet to a specified IP Address, then it works fine, but if I send to 255.255.255.255, then the SendTo() method returns -1;

Please advise what I'm doing wrong;

Kind regards

Erich
#31432
Posted: 11/19/2014 01:35:12
by Vsevolod Ievgiienko (EldoS Corp.)

Thank you for contacting us.

Do you have a problem on Android, iOS or both?
#31433
Posted: 11/19/2014 02:08:30
by Erich Kuba (Standard support level)
Joined: 05/16/2013
Posts: 38

Thanks for getting back to me ... I have not yet tested this specific code on Android or iOS ... this specific fault was found in my Windows development environment (which is my first dev environment).
#31434
Posted: 11/19/2014 02:18:27
by Vsevolod Ievgiienko (EldoS Corp.)

Please find next code in SBSocket.pas and its TElSocket.SendTo method:

Code
if addr = LongWord(INADDR_NONE) then
        raise EElSocketError.Create(sInvalidAddress, SB_SOCKET_ERROR_INVALID_ADDRESS);
    end
    else
      addr := {$ifdef SB_WINDOWS}Cardinal(INADDR_NONE);{$else}INADDR_NONE; // CHANFE CONSTANT HERE !!!{$endif}


and change INADDR_NONE to INADDR_BROADCAST. Then check if this helps.
#31459
Posted: 11/19/2014 21:34:25
by Erich Kuba (Standard support level)
Joined: 05/16/2013
Posts: 38

Thanks for getting back to me, but the lines of code that you refer to are excluded by the compiler directive {$ifdef SB_IPv6} on line 4458.

Please advise.
#31465
Posted: 11/20/2014 05:58:24
by Vsevolod Ievgiienko (EldoS Corp.)

The problem is described here: http://msdn.microsoft.com/en-us/libra...s.85).aspx See WSAEACCES error description. You should enable broadcasts using setsockopt function.
#31469
Posted: 11/20/2014 20:31:30
by Erich Kuba (Standard support level)
Joined: 05/16/2013
Posts: 38

Thank you. Once again you've come to the rescue.
Also by EldoS: Callback File System
Create virtual file systems and disks, expose and manage remote data as if they were files on the local disk.

Reply

Statistics

Topic viewed 521 times

Number of guests: 1, registered members: 0, in total hidden: 0




|

Back to top

As of July 15, 2016 EldoS Corporation will operate as a division of /n software inc. For more information, please read the announcement.

Got it!