Protocol info

[moien007]

Hi

I wanted to remake tw in C#.
I'm reading tw and ddnet source code about 2 days.
i didn't any info about tw protocol definitions, like packet structure or packing method or any info.

Please tell what files i have to read in repo also more info mean how client authentication works.

So.. just tell what i should read and do

Note: I'm not C\C++ expert, that's why i'm here

[deen]

Maybe this Rust reimplementation will help you: https://github.com/heinrich5991/libtw2

[moien007]

Maybe this Rust reimplementation will help you: https://github.com/heinrich5991/libtw2

LOL, tnx dude but i don't know Rust , just give 2/3 minute and tell me about tw protocol, please

[deen]

There is also https://github.com/ddnet/ddnet/blob/mas ... .h#L15-L28
Other than that, just reading the code, maybe stepping through with a debugger, could help.

[moien007]

There is also https://github.com/ddnet/ddnet/blob/mas ... .h#L15-L28
Other than that, just reading the code, maybe stepping through with a debugger, could help.

oh yeah that packets structure tnx, where's message definitions ?

[Ryozuki]

The structs used to send/recieve messages are generated by a python script, here is the generated file:

From my experience with it, the client uses

Code: Select all

CNetMsg_Cl_*

for outgoing messages from the client.
e.g:

Code: Select all

CNetMsg_Cl_Say // used to send a chat message.

I think its CNetMsg_Sv_* for outgoing messages from server to client.

Also from what i saw you use CNetObj_* structs to convert the data recieved (e.g projectile info CNetObj_Projectile)

To send a packet, the CMsgPacker is used.

Example sending a chat packet:

Code: Select all

// send chat message
CNetMsg_Cl_Say Msg;
Msg.m_Team = Team;
Msg.m_pMessage = pLine;

CMsgPacker packet(Msg.MsgID());
Msg.Pack(&packet);

Client()->SendMsg(&packet, MSGFLAG_VITAL);

// or a shorter version
CNetMsg_Cl_Say Msg;
Msg.m_Team = Team;
Msg.m_pMessage = pLine;
Client()->SendPackMsg(&Msg, MSGFLAG_VITAL);

[heinrich5991]

Packet header: https://github.com/heinrich5991/libtw2/ ... /packet.md

If you want, we could work together to create some documentation. You can find me on IRC, or on many instant messengers.

Code I use to generate the system messages: https://github.com/heinrich5991/libtw2/ ... _system.py (original code does ad-hoc parsing).

[mokuz]

Neat!

[moien007]

thanks, very useful.