From 5c59ba4e6f3ca12877d79859b16d1e63e559bb8a Mon Sep 17 00:00:00 2001 From: Bryan Newbold Date: Wed, 18 Oct 2017 17:18:23 -0700 Subject: commit a bunch of meta files --- src/dat.proto | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 src/dat.proto (limited to 'src') diff --git a/src/dat.proto b/src/dat.proto new file mode 100644 index 0000000..1b7bc2c --- /dev/null +++ b/src/dat.proto @@ -0,0 +1,81 @@ +// wire format is (
) +// header is a varint, channel << 4 | <4-bit-type> + +// type=0, should be the first message sent on a channel +message Feed { + required bytes discoveryKey = 1; + optional bytes nonce = 2; +} + +// type=1, overall connection handshake. should be send just after the feed message on the first channel only +message Handshake { + optional bytes id = 1; + optional bool live = 2; // keep the connection open forever? both ends have to agree + optional bytes userData = 3; + repeated string extensions = 4; +} + +// type=2, message indicating state changes etc. +// initial state for uploading/downloading is true +// if both ends are not downloading and not live it is safe to consider the stream ended +message Info { + optional bool uploading = 1; + optional bool downloading = 2; +} + +// type=3, what do we have? +message Have { + required uint64 start = 1; + optional uint64 length = 2 [default = 1]; // defaults to 1 + optional bytes bitfield = 3; +} + +// type=4, what did we lose? +message Unhave { + required uint64 start = 1; + optional uint64 length = 2 [default = 1]; // defaults to 1 +} + +// type=5, what do we want? remote should start sending have messages in this range +message Want { + required uint64 start = 1; + optional uint64 length = 2; // defaults to Infinity or feed.length (if not live) +} + +// type=6, what don't we want anymore? +message Unwant { + required uint64 start = 1; + optional uint64 length = 2; // defaults to Infinity or feed.length (if not live) +} + +// type=7, ask for data +message Request { + required uint64 index = 1; + optional uint64 bytes = 2; + optional bool hash = 3; + optional uint64 nodes = 4; +} + +// type=8, cancel a request +message Cancel { + required uint64 index = 1; + optional uint64 bytes = 2; + optional bool hash = 3; +} + +// type=9, get some data +message Data { + message Node { + required uint64 index = 1; + required bytes hash = 2; + required uint64 size = 3; + } + + required uint64 index = 1; + optional bytes value = 2; + repeated Node nodes = 3; + optional bytes signature = 4; +} + +// type=15 (last massage) is an extension message +// that is encoded like this -- cgit v1.2.3