Server.met file

File

Name: server.met

Location: ~/.aMule/

Description

Binary file containing the list of servers known to aMule.

Because its in binary format, it must be changed within aMule, or with other appropriate tools.

The format description below is for development information purposes.

Format

File Format

This file's fields are written in little endian order.

Note: All digit fields are unsigned unless stated.

• Met Header (1 Byte): With value Ox0E or OxE0, and is used in aMule to check for valid server.met files
• Server Count (4 Bytes): Lists the number of servers that follow
• Block of servers: Each server is constituted by the following fields:
  • Server IP (4 Bytes): Simply that. The server's IP.
  • Server Port (2 Bytes): Simply that. The port through which aMule will connect to the server.
  • Tag Count (4 Bytes): Lists the number of server tags that follows.
  • Block of Tags: Each server can have a list of associated tags with the format bellow.

Tags Format

General tags format

There are two tag identifiers: A name (string) and an ID (1 Byte)

Which one is used depends on the tag value type given or on the size of the tag name. If tag name length is 1, an ID is used.

• Tag value type (1 Byte)
• Tag name length (2 Bytes)
• Tag name (size given above)
• Tag value (size depends on tag type)

Tag value types

Tag types

Tag type (Code)	Explanation
String (0x02) (*)	Defines a string tag.
Unsigned 32 bits number (0x03)	Defines a numeric tag.

(*): Systems with Unicode enabled have the same tag string defined twice, the first in Unicode, and the second in plain ASCII, which will be ignored by Unicode enabled clients, and used by non-Unicode ones.

Tag IDs

Tag IDs

ID (code)	Tag value type	Description
ServerName (0x01)	String	Name of the server
Description (0x0B)	String	Short description about the server
Ping (0x0C)	Unsigned 32 bits number	Time it takes to comunicate with the server
Fail (0x0D)	Unsigned 32 bits number	How many times connecting to the server failed
Preference (0x0E)	Unsigned 32 bits number	Priority given to this server among the others (Normal=0, High=1, Low=2)
DNS (0x85)	String	DNS of the server
Max users (0x87)	Unsigned 32 bits number	Maximum number of users the server allows to simoultaneously connect to it
Soft files (0x88)	Unsigned 32 bits number	Soft files number
Hard files (0x89)	Unsigned 32 bits number	Hard files number
Last ping (0x90)	Unsigned 32 bits number	Last time the server was pinged
Version (0x91)	String / Unsigned 32 bits number	Version and name of the software the server is running to support the ed2k network
UDP flags (0x92)	Unsigned 32 bits number
Auxiliary ports list (0x93)	String
LowID clients (0x94)	Unsigned 32 bits number

Tag Names

There are at the moment two tag names recognized by aMule:

Tag Name	Tag Value
"files"	Unsigned 32 bits number	Shows the number of files registered in the server
"users"	Unsigned 32 bits number	Shows the number of users registered in the server

More

For more information on tags used in eMule files and protocol, check the ed2k tag documentation at the Hidranode project.