[Resolved] Simple enet program fails

Josh Klint · 2011-05-04T21:19:40

I am writing a Lua debugger using enet to communicate between processes. The debugger program is written in another language (but uses enet!), and works with a test executable also written in that language. Now I am trying to add code to my C++ program to make it communicate with the debugger program. I have a simple program like this: if (enet_initialize()!=0) { Print("Failed to initialize enet."); } else { ENetAddress address; ENetEvent enetevent; address.host = ENET_HOST_ANY; address.port = 7776; InterpreterDebugHost = enet_host_create(&address,64,0,0); if (InterpreterDebugHost==NULL) { Print("Failed to create host on port "+String(address.port)); } else { Print("Checking for events loop..."); bool exitloop = false; int time = Millisecs(); while (true) { int result = enet_host_service(InterpreterDebugHost,&enetevent,0); if (result>0) { switch (enetevent.type) { case ENET_EVENT_TYPE_CONNECT: Print("Connect"); exitloop=true; break; case ENET_EVENT_TYPE_DISCONNECT: Print("Disconnect"); break; case ENET_EVENT_TYPE_RECEIVE: Print("Receive"); break; case ENET_EVENT_TYPE_NONE: Print("No event"); break; } } else { if (result<0) Print("enet_host_service failed."); } if (Millisecs()-time>10000) exitloop = true; if (exitloop) break; } Print("Done with events loop"); } } } For some reason, the C++ program never detects any events, even though it is pretty much identical to my other test program not written in C++.

Networking and Multiplayer Programming

Started by Josh Klint April 30, 2011 08:31 PM

16 comments, last by hplus0603 12 years, 11 months ago

Josh Klint

1,469

Author

May 02, 2011 04:56 AM

Even more interesting: I removed Lua and Luabind, so I could package up the project and post it here, and now the connection magically works...

10x Faster Performance for VR: www.ultraengine.com

smasherprog

570

May 02, 2011 05:12 AM

Because of the fact that the connection works when you specify your local lost (127.0.0.1), I really think that you are trying to connect to the wrong address. An address of "192.168.0.1" would be reserved for the address of your router. You should be trying to connect to an address like, 192.168.0.2. Or, if you were on a standard setup, 192.168.1.2, or 192.168.1.3 .... etc

Wisdom is knowing when to shut up, so try it.
--Game Development http://nolimitsdesigns.com: Reliable UDP library, Threading library, Math Library, UI Library. Take a look, its all free.

SymLinked

1,233

May 02, 2011 10:47 AM

Even more interesting: I removed Lua and Luabind, so I could package up the project and post it here, and now the connection magically works...

Ouch. Are you sure you have made a full recompile of the project? If you insert those libraries again, is the problem reproduced? Can you ping directly via your O/S to the address you are trying to connect to?

Contrary to what the previous poster says, there's nothing wrong with having a zero as the third octet in an IPv4 address. For instance, this is the default on some Netgear routers.
They also do not have to (but usually do in typical setups) reside on the first IP in the range. There's nothing non-standard about this and it likely has nothing to do with your problem.

Josh Klint

1,469

Author

May 02, 2011 03:22 PM

The IP address thing is resolved. I just haven't done any network programming for a while, so I forgot the default local address.

I'll do some more testing and figure out exactly what I am including that messes up enet.

10x Faster Performance for VR: www.ultraengine.com

Josh Klint

1,469

Author

May 02, 2011 05:22 PM

Well, it works fine now after I added everything back in. Maybe my change to the IP address somehow wasn't get recompiled.

10x Faster Performance for VR: www.ultraengine.com

smasherprog

570

May 02, 2011 07:07 PM

Josh, that is great, but I am curious, you are saying it works using the 192.168.0.1 address? Sorry, I just have to know.

Oh and to SymLinked, thanks for voting down all of my posts, hopefully the moderators can rectify it.

Wisdom is knowing when to shut up, so try it.
--Game Development http://nolimitsdesigns.com: Reliable UDP library, Threading library, Math Library, UI Library. Take a look, its all free.

Josh Klint

1,469

Author

May 02, 2011 07:52 PM

No, I just use "localhost" and it works.

10x Faster Performance for VR: www.ultraengine.com

hplus0603

11,916

May 04, 2011 09:19 PM

Josh, that is great, but I am curious, you are saying it works using the 192.168.0.1 address? Sorry, I just have to know.

Oh and to SymLinked, thanks for voting down all of my posts, hopefully the moderators can rectify it.

Please, no discussing personal issues on the board, or I will have to moderate it. Take it to PM if it matters.

Moderators do not get involved in ratings issues, unless there is some bug with the system. Over time, ratings tend to work themselves out.

enum Bool { True, False, FileNotFound };

[Resolved] Simple enet program fails

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[Resolved] Simple enet program fails

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