Module STUN_TypesAndValues

• AttributeFields
• Attributes

Details

type hexstring MagicCookie;

type universal charstring utf8string  length(0 .. 127)
with {
variant "UTF-8"
}

type enumerated STUNMessageType {
request, success_response, failure_response, indication
}

type enumerated STUNMessageAttributeType {
    MAPPED_ADDRESS,
    XOR_MAPPED_ADDRESS,
    USERNAME,
    MESSAGE_INTEGRITY,
    ERROR_CODE,
    REALM,
    NONCE,
    UNKNOWN_ATTRIBUTES,
    SOFTWARE,
    ALTERNATE_SERVER,
    FINGERPRINT
}

type enumerated Family {
    IPv4, IPv6
}

type record STUNMessage {
    STUNMessageHeader header, 
    STUNMessageAttributGroup messageAttributes optional
}

type record STUNMessageHeader {
    STUNMessageType messageType,
    integer messageLength,
    MagicCookie magicCookie, 
    integer transactionID 
}

type record MappedAddress {
    STUNMessageAttributeType stunType (MAPPED_ADDRESS) ,
    integer stunLength,
    Family family,
    integer mappedAddressPort,
    octetstring mappedAdressAddress
}

type record XORMappedAddress {
    STUNMessageAttributeType stunType (XOR_MAPPED_ADDRESS) ,
    integer stunLength,
    Family family,
    integer xPort,
    octetstring xAddress
}

type record Username {
    STUNMessageAttributeType stunType (USERNAME) ,
    integer stunLength,
    utf8string username
}

type record MessageIntegrity {
    STUNMessageAttributeType stunType (MESSAGE_INTEGRITY) ,
    integer stunLength,
    octetstring integrity
}

type record Fingerprint {
    STUNMessageAttributeType stunType (FINGERPRINT) ,
    integer stunLength,
    octetstring
    fingerprint 
}

type record ErrorCode {
    STUNMessageAttributeType stunType (ERROR_CODE) ,
    integer stunLength,
    integer classnumber (300 .. 699) ,
    charstring reasonPhrase
}

type record Realm {
    STUNMessageAttributeType stunType (REALM) ,
    integer stunLength,
    utf8string realm
}

type record Nonce {
    STUNMessageAttributeType stunType (NONCE) ,
    integer stunLength,
    utf8string nonce
}

type record UnknownAttributes {
    STUNMessageAttributeType stunType (UNKNOWN_ATTRIBUTES) ,
    integer stunLength,
    UnknownAttributesGroup unknownAttributeGroup
}

type record Software {
    STUNMessageAttributeType stunType (SOFTWARE) ,
    integer stunLength,
    utf8string software
}

type record AlternateServer {
    STUNMessageAttributeType stunType (ALTERNATE_SERVER) ,
    integer stunLength,
    Family family,
    integer alternateServerPort,
    octetstring alternateServerAddress
}

type
record of STUNMessageAttribute STUNMessageAttributGroup

type record of bitstring UnknownAttributesGroup

type union STUNMessageAttribute {
MappedAddress mappedAdress,
XORMappedAddress xorMappedAddress,
Username username,
MessageIntegrity messageIntegrity,
Fingerprint fingerprint,
ErrorCode errorCode,
Realm realm,
Nonce nonce,
UnknownAttributes unknownAttributes,
Software software,
AlternateServer alternateServer
}

const MagicCookie MAGIC_COOKIE := '2112A442'H