A particular client ID that the user identifies within Trader Workstation or IB Gateway. Within InteractiveTradeR, a socket that connects to TWS or IBG using the Master Client ID is considered a *master socket*.

The Master Client ID is special becayse any call made LIST CALLS HERE , if made on a master socket, will ---, whereas for a normal one, ---.

master_client_id

Format

integer between 1 and 65,535, inclusive