Logon

Upon connection, the member must send a Logon message. The message indicates whether the member would like a spin of the current top of book for all symbols. The server will respond with either a Logon Accepted or Logon Rejected message. If a spin was requested, a Spin message is sent for each symbol, followed by a Spin Done message. If updates occur during the spin, you will receive Seconds, Milliseconds, Long/Short Bid Update, Long/Short Ask Update, Long/Short Two-Sided Update, and Long/Short Trade messages before receiving the Spin Done message. Seconds and Milliseconds messages are used to interleave timestamp information between messages, preventing duplicate timestamp information from being embedded in multiple messages.