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Update Prop254 to match implementation.

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Mike Perry 2017-01-14 15:08:44 -05:00
parent 0803997076
commit f9251c1832
1 changed files with 16 additions and 20 deletions
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36
proposals/254-padding-negotiation.txt
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@ -41,31 +41,27 @@ Proposal 251[1]).
In that scenario, the primary negotiation mechanism we need is a way for
mobile clients to tell their Guards to stop padding, or to pad less
often. The following Trunnel payloads should cover the needed
often. The following Trunnel payload should cover the needed
parameters:
const CELL_PADDING_COMMAND_STOP = 1;
const CELL_PADDING_COMMAND_START = 2;
const CHANNELPADDING_COMMAND_STOP = 1;
const CHANNELPADDING_COMMAND_START = 2;
/* This command tells the relay to stop sending any periodic
CELL_PADDING cells. */
struct cell_padding_stop {
u8 command IN [CELL_PADDING_COMMAND_STOP];
};
/* The start command tells the relay to alter its min and max netflow
timeout range values, and send padding at that rate (resuming
if stopped). The stop command tells the relay to stop sending
link-level padding. */
struct channelpadding_negotiate {
u8 version IN [0];
u8 command IN [CHANNELPADDING_COMMAND_START, CHANNELPADDING_COMMAND_STOP];
/* 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 cell_padding_start {
u8 command IN [CELL_PADDING_COMMAND_START];
/* Min must not be lower than the current consensus parameter
nf_ito_low. Ignored if command is stop. */
u16 ito_low_ms;
/* Min must not be lower than the current consensus parameter
nf_ito_low. */
u16 ito_low_ms;
/* Max must not be lower than ito_low_ms */
u16 ito_high_ms;
};
/* Max must not be lower than ito_low_ms. Ignored if command is stop. */
u16 ito_high_ms;
};
More complicated forms of link-level padding can still be specified
using the primitives in Section 3, by using "leaky pipe" topology to