admin port

[Honza_]

Hi,
I would like to make php library for comunicating via admin port. It shouldnt be much hard, but I failed to comunicate with server, what is quite a major problem. There is little documentation about what actually send, and I cant extract from already done libraries in jave or python.

So, is there some nice site, where is exactly said what data pack and send?

My problem is: I want to join as admin, so I have a server with admin password "password", and port is 3977.
I am sending packet 0x00 + "password" + 0x00 + "botname" + 0x00 + "version" + 0x00
But nothing is received.

[Terkhen]

As I mentioned already in your other thread, the documentation of the admin port is here:

http://vcs.openttd.org/svn/browser/trun ... etwork.txt

If something you need is missing from the documentation, I'm afraid you will need to check OpenTTD source code (somewhere in src/network IIRC) or wait for someone who knows about the admin network to answer here.

[adf88]

A packet should contain it's size on the first two bytes (LE). Your packet has...

• size - 2 bytes
  type - 1 byte
  "password" - 9 bytes
  "botname" - 8 bytes
  "version" - 7 bytes
  ----------------------
  = 27 bytes (0x1B bytes)

...so what you should send is

• 0x1B 0x00 + 0x00 + "password" + 0x00 + "botname" + 0x00 + "version" + 0x00

[Honza_]

thanks adf88, I will try it, seems this really could be it

Terkhen, I read that, it is good, but doesnt go to details about the packet consist as you probably know too.

[Terkhen]

Sorry but as I mentioned I don't know much about the admin network. Your best bet is the source code then.

[Honza_]

ok, so it works, already getting some packets from server. This admin port is sure a cool thingy

[burty]

JOAN has a lot of example code that you will be able to port to PHP quite easily. In fact JOAN example code could be ported quite easily to almost any language if you know what you are doing in the that language.

[Honza_]

Thats true. Right now I can access server very easily, but major problem is handling TCP socket. My code is too much slow. Unfortunately, this cant be transfered from java

[burty]

What's the reason for needing to use PHP as opposed to Java? Hit me up on MSN if you want I've got some PHP experience so I might be able to give you some help.

[Honza_]

What's the reason for needing to use PHP as opposed to Java?

Reason is to gain control via web. Although java can be useful here, I would rather do it in php.

So I have this code:

Code: Select all

<?php
  public function connect(){
    $this->socket = fsockopen($this->host,$this->port); //open socket
    //stream_set_blocking( $this->socket, false);   //non blocking stream
  }
  
  public function send_packet($type, $subtype=""){
    $this->type = $type;
    if($subtype) $this->subtype = $subtype;
    $this->packet = new APacket();
    $this->send_prepare();
    
    fwrite($this->socket, $this->packet->send(), APcontrol::SEND_MTU);
  }
  
  public function recv_packet(){
    $output = "";
    while(($output .= fread($this->socket, APcontrol::SEND_MTU))){
       
    }
    $this->packet->recv_start($output);
    $this->recv_analyze();
  }
?>

And I have this problem:
I am able to connect, to send query, even recieve, but recieving takes a lot of time, 10+ secons, sometimes even more than php timeout. TCP should be able to do it much faster, so obviously I missed some vital thing.
With stream blocking it outpust nothing.

Any help would be very appreciated.

[Korenn]

Does the admin port receive the map? If it does, that code is way too slow - you're string concatenating on each byte. If you receive large packets you'd be better off creating a buffer array and reading a chunk at a time.

You should time whether it finished the read or if your own receiving functions are the bottleneck.

[planetmaker]

Does the admin port receive the map?

No.

[Honza_]

No map. Recieveing data are not more than aproximately 500 bytes, if game is full.

[paco]

A packet should contain it's size on the first two bytes (LE). Your packet has...

• size - 2 bytes
  type - 1 byte
  "password" - 9 bytes
  "botname" - 8 bytes
  "version" - 7 bytes
  ----------------------
  = 27 bytes (0x1B bytes)

...so what you should send is

• 0x1B 0x00 + 0x00 + "password" + 0x00 + "botname" + 0x00 + "version" + 0x00

Thanks for the info! I had the same problem as Honza_. I am planning to write an interface to the admin port for personal use (and fun) in the Lua programming language. The documentation at http://svn.openttd.org/trunk/docs/admin_network.txt is clear, but it doesn't tell a packet should contain its size which is essential information. My elementary program is now able to communicate with the server through the admin port and is able to grow...

Either adding the packet's size is obvious and I am stupid or the documentation should be updated. It took me hours of Googling and reading this forum before I found this thread and found out what I did wrong. If the documentation should be updated, who can I contact?