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/* These are the padding negotiation commands */
const CIRCPAD_COMMAND_STOP = 1;
const CIRCPAD_COMMAND_START = 2;
/* Responses to commands */
const CIRCPAD_RESPONSE_OK = 1;
const CIRCPAD_RESPONSE_ERR = 2;
/* Built-in machine types */
/* 1) Machine that obscures circuit setup */
const CIRCPAD_MACHINE_CIRC_SETUP = 1;
/**
* This command tells the relay to alter its min and max netflow
* timeout range values, and send padding at that rate (resuming
* if stopped). */
struct circpad_negotiate {
u8 version IN [0];
u8 command IN [CIRCPAD_COMMAND_START, CIRCPAD_COMMAND_STOP];
/** Machine type is left unbounded because we can specify
* new machines in the consensus */
u8 machine_type;
/** If true, send a relay_drop reply.. */
// FIXME-MP-AP: Maybe we just say to transition to the first state
// here instead.. Also what about delay before responding?
u8 echo_request IN [0,1];
// This field is used for shutdown synchronization. It is OK if
// it wraps, because all we need to do is make sure the STOP
// command is actually for the currently active machine.
// For backward-compatibility, though, 0 has special meaning
// (it means match any machine).
u32 machine_ctr;
};
/**
* This command tells the relay to alter its min and max netflow
* timeout range values, and send padding at that rate (resuming
* if stopped). */
struct circpad_negotiated {
u8 version IN [0];
u8 command IN [CIRCPAD_COMMAND_START, CIRCPAD_COMMAND_STOP];
u8 response IN [CIRCPAD_RESPONSE_OK, CIRCPAD_RESPONSE_ERR];
/** Machine type is left unbounded because we can specify
* new machines in the consensus */
u8 machine_type;
/**
* This field is used for shutdown synchronization. It is OK if
* it wraps, because all we need to do is make sure the STOP
* command is actually for the currently active machine.
* For backward-compatibility, though, 0 has special meaning
* (it means match any machine).
*/
u32 machine_ctr;
};
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