init

src/bitcoin-stratum.provider.ts

@@ -0,0 +1,90 @@
+import { Injectable } from '@nestjs/common';
+import { plainToInstance } from 'class-transformer';
+import { validate, ValidatorOptions } from 'class-validator';
+import { Server, Socket } from 'net';
+
+import { eMethod } from './models/enums/eMethod';
+import { SubscriptionMessage } from './models/SubscriptionMessage';
+
+@Injectable()
+export class BitcoinStratumProvider {
+  private server: Server;
+
+  constructor() {
+    this.server = new Server((socket: Socket) => {
+      console.log('New client connected:', socket.remoteAddress);
+
+      socket.on('data', this.handleData.bind(this, socket));
+
+      socket.on('end', () => {
+        // Handle socket disconnection
+        console.log('Client disconnected:', socket.remoteAddress);
+      });
+
+      socket.on('error', (error: Error) => {
+        // Handle socket error
+        console.error('Socket error:', error);
+      });
+    });
+  }
+
+
+
+
+  private async handleData(socket: Socket, data: Buffer) {
+    const message = data.toString();
+    console.log('Received:', message);
+
+    // Parse the message and check if it's the initial subscription message
+    const parsedMessage = JSON.parse(message);
+
+    if (parsedMessage.method === eMethod.SUBSCRIBE) {
+      const subscriptionMessage = plainToInstance(
+        SubscriptionMessage,
+        parsedMessage,
+      );
+
+      const validatorOptions: ValidatorOptions = {
+        whitelist: true,
+        forbidNonWhitelisted: true,
+      };
+
+      const errors = await validate(subscriptionMessage, validatorOptions);
+
+      if (errors.length === 0) {
+        const response = this.buildSubscriptionResponse(subscriptionMessage.id);
+        socket.write(JSON.stringify(response) + '\n');
+      }
+    }
+  }
+
+  private buildSubscriptionResponse(requestId: number): any {
+    const subscriptionResponse = {
+      id: requestId,
+      result: [
+        [
+          [
+            'mining.set_difficulty',
+            '0000000c9c7a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9',
+          ],
+          [
+            'mining.notify',
+            '0000000c9c7a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9a9',
+          ],
+        ],
+        'a843cfc2',
+        4,
+      ],
+    };
+
+    return subscriptionResponse;
+  }
+
+
+
+  listen(port: number) {
+    this.server.listen(port, () => {
+      console.log(`Bitcoin Stratum server is listening on port ${port}`);
+    });
+  }
+}