Logon

The first message from client to server after establishing connection should be Logon message:

Logon message fields, Tag 35=A
Tag	Field Name	Required	Type	Comments
<Standard Header>
98	EncryptMethod	Y	Int	= 0 (no encryption)
108	HeartBtInt	Y	Int	How often the client would receive periodic heartbeat messages from SellSides, in seconds. Valid values are from 10 to 60.
141	ResetSeqNumFlag	Y	Boolean	= Y (force automatic reset of sequence numbers for both sides, required for market data session) = N (no message sequence reset, might be useful for automatic re-send messages for trading session)
553	Username	Y	String	Value provided to particular client.
554	Password	Y	String	Value provided to particular client.