Battle.net Chat Protocol Issues?

[TheMinistered]

Telos and I were working on a socket library for generic use.  I was testing it on battle.net using overlapped sockets and I kept running into a problem.  Here is some logs:

This is the normal data you should receive from battle.net upon connection.  NAME packet, CHANNEL packet, USER packet(s).

Connection from [68.47.226.172]

Enter your account name and password.
Use 'anonymous' if you only want to issue queries.

Username: ;i
Password:

2010 NAME ;i
1007 CHANNEL "Public Chat 1"
1001 USER tbd-cokes-king 0000 [SEXP]
1001 USER The-Brethren#2 0010 [CHAT]

...

However, I was experiencing a problem receiving data upon connection.  I was not receiving the NAME packet, CHANNEL packet, and some USER packet(s).

Connection from [68.47.226.172]

Enter your account name and password.
Use 'anonymous' if you only want to issue queries.

Username: ;i
Password:

1001 USER lsucmlsh 0000 [SEXP]
1001 USER ;i 0010 [CHAT]

...

After becoming extremely frusterated,  I went to op [vL] and asked for some help and I got a little here and there.  Eventually, I ended up relying on my self to fix the problem.

I determined, after much testing, that WSASend was causing the phenomena with WSARecv.

I was invoking the function like so:

Code Select Expand


// send function-prototype
Send(BYTE* lpData, DWORD dwSize);

// example of wrong invokation
char Login[] = "c;i\rxxxx\r";
Send(Login, 10);


The problem with the code above, is that it was sending the null terminator along with the data.  I can only assume that this caused the problem, because invoking send like so cures the problem:

Code Select Expand


// example of right invokation
char Login[] = "c;i\rxxxx\r";
Send(Login, 9);


Does anyone know why sending the null terminator causes this phenomena?

[Adron]

You should send the null terminator and then packetlog and see if you're getting the right data, or if the null terminator is interpreted by battle.net to do something strange...

[iago]

I was also going to suggest packetlogging, preferably with your program.  If you need a c++ function to dump out pretty output, let me know, I'll send you mine on aim.