| 0 | 1 | 2 | 3 |
|---|---|---|---|
| V | T | RSV | RSV |
V, u8: The protocol version of the request (1).
T, u8: The request type: Now (1), Before (2), After (3).
RSV, u8: Reserved.
RSV, u8: Reserved.
| 0 1 2 3 |
|---|
| HEADER |
HEADER: See header definition above. Now request only has the header. T set to Now (1).
| 0 1 2 3 | 4 5 6 7 8 9 10 11 |
|---|---|
| HEADER | EPOCH |
HEADER: See header defintion above. T set to either Before (2) or After (3).
EPOCH, u64: The time we are testing against represented as the number of nanoseconds from the unix epoch (Jan 1 1970 UTC)
| 0 | 1 | 2 | 3 |
|---|---|---|---|
| V | T | F | RSV |
V, u8: The protocol version of this response.
T, u8: The response type. Should always match a valid request type; otherwise returns Error (0).
F, u8: Set to 1 if Chrony is not synchronized. Set to 0 otherwise.
RSV, u8: Reserved.
| 0 1 2 3 | 4 5 6 7 8 9 10 11 | 12 13 14 15 16 17 18 19 |
|---|---|---|
| HEADER | EARLIEST | LATEST |
HEADER: See header definition above.
EARLIEST, u64: Clock Time - Clock Error Bound represented as the number of nanoseconds from the unix epoch (Jan 1 1970 UTC).
LATEST, u64: Clock Time + Clock Error Bound represented as the number of nanoseconds from the unix epoch (Jan 1 1970 UTC).
| 0 1 2 3 | 4 |
|---|---|
| HEADER | A |
A, u8: Set to 1 (true) if the requested time happened after the latest error bound of the current system time, otherwise 0 (false).
| 0 1 2 3 | 4 |
|---|---|
| HEADER | B |
B, u8: Set to 1 (true) if the requested time happened before the earliest error bound of the current system time, otherwise 0 (false).
| 0 1 2 3 |
|---|
| HEADER |
HEADER: See header definition above. An error response returns the header with T set to Error (0).