CMD_AUTH_LOGON_CHALLENGE_Client

Protocol Version *

First message sent by the client when attempting to connect. The server will respond with CMD_AUTH_LOGON_CHALLENGE_Server.

Has the exact same layout as CMD_AUTH_RECONNECT_CHALLENGE_Client.

Wowm Representation

Autogenerated from wowm file at wow_message_parser/wowm/login/cmd_auth_logon/challenge_client.wowm:21.


clogin CMD_AUTH_LOGON_CHALLENGE_Client = 0x00 {
    ProtocolVersion protocol_version;
    u16 size = self.size;
    u32 game_name = "\0WoW";
    Version version;
    Platform platform;
    Os os;
    Locale locale;
    i32 utc_timezone_offset;
    IpAddress client_ip_address;
    String account_name;
}

Login messages have a header of 1 byte with an opcode. Some messages also have a size field but this is not considered part of the header.

Offset	Size / Endianness	Type	Name	Description
0x00	1 / -	uint8	opcode	Opcode that determines which fields the message contains.

Body

Offset	Size / Endianness	Type	Name	Comment
0x01	1 / -	ProtocolVersion	protocol_version	Determines which version of messages are used for further communication.
0x02	2 / Little	u16	size
0x04	4 / Little	u32	game_name
0x08	5 / -	Version	version
0x0D	4 / -	Platform	platform
0x11	4 / -	Os	os
0x15	4 / -	Locale	locale
0x19	4 / Little	i32	utc_timezone_offset	Offset in minutes from UTC time. 180 would be UTC+3
0x1D	4 / Big	IpAddress	client_ip_address
0x21	- / -	String	account_name	Real clients can send a maximum of 16 UTF-8 characters. This is not necessarily 16 bytes since one character can be more than one byte. Real clients will send a fully uppercased username, and will perform authentication calculations on the uppercased version. Uppercasing in regards to non-ASCII values is little weird. See `https://docs.rs/wow_srp/latest/wow_srp/normalized_string/index.html` for more info.

Examples

Example 1

Comment

x86 Windows user on enGB attempting to log in with username 'A'.


0, // opcode (0)
3, // protocol_version: ProtocolVersion THREE (3)
31, 0, // size: u16
87, 111, 87, 0, // game_name: u32
1, // Version.major: u8
12, // Version.minor: u8
1, // Version.patch: u8
243, 22, // Version.build: u16
54, 56, 120, 0, // platform: Platform X86 ("\0x86")
110, 105, 87, 0, // os: Os WINDOWS ("\0Win")
66, 71, 110, 101, // locale: Locale EN_GB ("enGB")
60, 0, 0, 0, // utc_timezone_offset: i32
127, 0, 0, 1, // client_ip_address: IpAddress
1, // string length
65, // account_name: String