Create Statistics.md

Development/Statistics.md

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+Waku v2 Light Push
+
+    Status: draft
+    Editor: Oskar Thorén oskar@status.im
+
+Protocol identifier: /vac/waku/lightpush/2.0.0-beta1
+Motivation and goals #
+
+Light nodes with short connection windows and limited bandwidth wish to publish messages into the Waku network. Additionally, there is sometimes a need for confirmation that a message has been received “by the network” (here, at least one node).
+
+19/WAKU2-LIGHTPUSH is a request/response protocol for this.
+Payloads #
+
+syntax = "proto3";
+
+message PushRequest {
+    string pubsub_topic = 1;
+    WakuMessage message = 2;
+}
+
+message PushResponse {
+    bool is_success = 1;
+    // Error messages, etc
+    string info = 2;
+}
+
+message PushRPC {
+    string request_id = 1;
+    PushRequest request = 2;
+    PushResponse response = 3;
+}
+
+Message relaying #
+
+Nodes that respond to PushRequests MUST relay this via 11/WAKU2-RELAY protocol on the specified pubsub_topic. If they are unable to do so for some reason, they SHOULD return an error code in PushResponse.
+Security considerations #
+
+Since this can introduce amplification factor, it is RECOMMENDED for the node relaying to the rest of the network to extra precaution. This can be done by various forms of rate limiting, or by using 18/WAKU2-SWAP to account for the service provided.
+
+Note that the above is currently not fully implemented.
+Copyright #
+
+Copyright and related rights waived via CC0.