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Post by Prads on Nov 17, 2014 1:12:15 GMT -8
Hello everyone, Sorry if I posted this in the wrong section. So, I am trying to get the cadiaplayer ( cadia.ru.is/wiki/public:cadiaplayer:main ) running with the GGP server ( github.com/ggp-org/ggp-base ). I have successfully compiled the cadiaplayer but when I try to connect with GGP server, it just won't connect. Here's what I've done: First I ran the server and created a player with host and port 127.0.0.1:9147  Then I ran the cadiaplayer using the command: ./ggpplayer ./cadiaplayer 9147 Cadiaplayer gives this input on the terminal: Starting program ...
Using port: 9147
Trying to start program './cadiaplayer'
Child Process starting...
GGP Program started sucessfully!
Listening to port: 9147And then it does nothing. Here's the agent.log: Mon Nov 17 19:55:09 2014 Starting player:
Mon Nov 17 19:55:09 2014 PAST/RAVE player
Mon Nov 17 19:55:09 2014 Simulations not limited, Expansions not limited, Early Cutoff disabled, Unexplored Action Urgency enabled(50)
Mon Nov 17 19:55:09 2014 Waiting for start messageAnd here's the server.log: Mon Nov 17 19:55:09 2014 : Accepting connections...
Mon Nov 17 19:55:10 2014 : Connection accepted
Mon Nov 17 19:55:10 2014 : H:[POST / HTTP/1.0
Accept: text/delim
Host: localhost
Sender: GAMESERVER
Receiver:
Content-Type: text/acl
Content-Length: 8]
Mon Nov 17 19:55:10 2014 : C:[( INFO )]
Mon Nov 17 19:55:10 2014 : HTTP request received
Mon Nov 17 19:55:10 2014 : RCVD-FROM-TCP: [( INFO )]
Mon Nov 17 19:55:10 2014 : SEND-TO-PRG:[( info )
]Any help to get cadiaplayer to work would be much appreciated! |
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Post by Richard on Nov 17, 2014 8:58:28 GMT -8
I can't really comment on how cadiaplayer works, but looking at your match setup - playing against yourself is likely to be not supported. So as a quick stab in the dark, I'd try a single player game or set up two cadiaplayers on different ports for a two player game. Good luck.
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Post by Prads on Nov 17, 2014 13:58:17 GMT -8
Thanks Richard for the reply. I tried it with proper setup for the server to play 2 player tic tac toe game. I have a Monte Carlo Player (one that came with the ggp server) on port 9147 which connects to the server. But the cadiaplayer never connects to the server. Here's the screenshot:  |
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Post by Prads on Nov 17, 2014 14:49:38 GMT -8
So I have been trying to see what the problem is by looking at the code. The cadiaplayer ggpserver gets the "info" message from the Game Manager and the ggpserver sends that message down to cadiaplayer but then the server waits for the reply from cadiaplayer forever. It means that for some reason the cadiaplayer is not replying to the "info" message from the Game Manager.
string msg = m_program->readFromStdOut( );
in line 322 of server.cpp is not returning.
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Post by Richard on Nov 18, 2014 3:28:01 GMT -8
Honestly, I would be guessing as much as anyone else at this point - and it might be best to message the authors (I am not sure they are hanging out here). But if I were to attempt to debug it, and I would only debug if I knew the released code was in fairly runnable state (you would have to ask the authors again) - I would:
1. Is the agent program still alive after info message from server?
2. Printing out what the agent program receives. Does it expect to read in a line at time, and hence there might be an 'end of line' issue (ie CR/LF).
3. Trace (with just a few prints) through the agent program after receive.
Hope that helps.
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Post by Richard on Nov 18, 2014 3:42:50 GMT -8
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Post by Prads on Nov 18, 2014 13:02:08 GMT -8
Hmm interesting. So, the cadiaplayer has a custom info message, but if you read this website: games.stanford.edu/index.php/communication-protocolIt says that the (info) message is used to confirm that a player is up and running. Upon receiving the (info) messages, the player should return (available). I checked the source code and it seems like cadiaplayer is sending (available) message only when it receives (ping) message. It does something else when it receives (info). I will try to change the source a bit and see if I can connect it to the server. If that doesn't work, I will have to contact the authors (if I can find their email). Hope they reply their email. |
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Post by maciej on Nov 18, 2014 15:40:49 GMT -8
Hmm interesting. So, the cadiaplayer has a custom info message, but if you read this website: games.stanford.edu/index.php/communication-protocolIt says that the (info) message is used to confirm that a player is up and running. Upon receiving the (info) messages, the player should return (available). I checked the source code and it seems like cadiaplayer is sending (available) message only when it receives (ping) message. It does something else when it receives (info). I will try to change the source a bit and see if I can connect it to the server. If that doesn't work, I will have to contact the authors (if I can find their email). Hope they reply their email. I think you pretty much have the answer in your post. From what I recall, the (info) message was added at some point, recently. Earlier, I was aware only of (ping). Probably cadiaplayer does not implement reaction to (ping) and by coincidence they had introduced their own custom (info) message which is not what you expect it is  It is the matter of time when info was implemented in CP and when it was introduced by the Stanford folks. Hence, the confusion.... Check out CadiaPlayer commands: What I suggest is running your players using GameManager.jar from the dresden site. It does not send any info or ping at all, so you could use CadiaPlayer program as is. |
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Post by alandau on Nov 18, 2014 18:41:02 GMT -8
Hacky possible fix, if you want to keep using the GGP-Base server:
Rewrite the updateInfo() method in the PlayerPresence class as follows:
public synchronized void updateInfo() {
name = "MysteryGamer";
status = "available";
statusTime = System.currentTimeMillis();
}
This should prevent the INFO request from being sent and allow the game to start normally.
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Post by Prads on Nov 18, 2014 20:04:26 GMT -8
I changed the source code of cadiaplayer so that each time it receives "info" message, it is changed into "ping" message by the ggpserver.  It works perfectly now. Thanks guys for your help! |
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It works perfectly now. Thanks guys for your help!