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NAT traversal via Rendezvous protocol #228

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NAT traversal via Rendezvous protocol #228

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19 changes: 19 additions & 0 deletions src/message/create.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,8 @@ import {
INodesMessage,
ITalkReqMessage,
ITalkRespMessage,
IRelayRequestMessage,
IRelayResponseMessage,
} from "./types.js";
import { SequenceNumber, ENR } from "../enr/index.js";

Expand Down Expand Up @@ -56,3 +58,20 @@ export function createTalkResponseMessage(requestId: RequestId, payload: Uint8Ar
response: Buffer.from(payload),
};
}

export function createRelayRequestMessage(fromNodeId: bigint, toNodeId: bigint): IRelayRequestMessage {
return {
type: MessageType.RELAYREQUEST,
id: createRequestId(),
fromNodeId,
toNodeId,
};
}

export function createRelayResponseMessage(response: number): IRelayResponseMessage {
return {
type: MessageType.RELAYRESPONSE,
id: createRequestId(),
response,
};
}
26 changes: 24 additions & 2 deletions src/message/types.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@ export enum MessageType {
TICKET = 8,
REGCONFIRMATION = 9,
TOPICQUERY = 10,
RELAYREQUEST = 11,
RELAYRESPONSE = 12,
}

export function isRequestType(type: MessageType): boolean {
Expand All @@ -34,14 +36,21 @@ export function isRequestType(type: MessageType): boolean {

export type Message = RequestMessage | ResponseMessage;

export type RequestMessage = IPingMessage | IFindNodeMessage | ITalkReqMessage | IRegTopicMessage | ITopicQueryMessage;
export type RequestMessage =
| IPingMessage
| IFindNodeMessage
| ITalkReqMessage
| IRegTopicMessage
| ITopicQueryMessage
| IRelayResponseMessage;

export type ResponseMessage =
| IPongMessage
| INodesMessage
| ITalkRespMessage
| ITicketMessage
| IRegConfirmationMessage;
| IRegConfirmationMessage
| IRelayResponseMessage;

export interface IPingMessage {
type: MessageType.PING;
Expand Down Expand Up @@ -108,3 +117,16 @@ export interface ITopicQueryMessage {
id: RequestId;
topic: Buffer;
}

export interface IRelayRequestMessage {
type: MessageType.RELAYREQUEST;
id: RequestId;
fromNodeId: bigint;
toNodeId: bigint;
}

export interface IRelayResponseMessage {
type: MessageType.RELAYRESPONSE;
id: RequestId;
response: number;
}