Method isPayloadValid

packages/socket.io-parser/lib/index.ts:306–326

(type: PacketType, payload: any)

  }

  private static isPayloadValid(type: PacketType, payload: any): boolean {
    switch (type) {
      case PacketType.CONNECT:
        return isObject(payload);
      case PacketType.DISCONNECT:
        return payload === undefined;
      case PacketType.CONNECT_ERROR:
        return typeof payload === "string" || isObject(payload);
      case PacketType.EVENT:
      case PacketType.BINARY_EVENT:
        return (
          Array.isArray(payload) &&
          (typeof payload[0] === "number" ||
            (typeof payload[0] === "string" &&
              RESERVED_EVENTS.indexOf(payload[0]) === -1))
        );
      case PacketType.ACK:
      case PacketType.BINARY_ACK:
        return Array.isArray(payload);
    }
  }

  /**
   * Deallocates a parser's resources