lbcd/rpcclient/examples/lbcdblocknotify/stratumclient.go
Roy Lee f513fca6a7 lbcdblocknotify: reorganize the code with a few updates
1. Fixed a bug, which reads certs even TLS is disabled

2. Persists Stratum TCP connection with auto-reconnect.
   (retry backoff increases from 1s to 60s maximum)

3. Stratum update jobs on previous notifications are canceled
   when a new notification arrives.

   Usually, the jobs are so short and completed immediately.
   However, if the Stratum connection is broken, this prevents
   the bridge from accumulating stale jobs.
2022-10-17 00:03:13 -07:00

56 lines
945 B
Go

package main
import (
"context"
"fmt"
"net"
)
type stratumClient struct {
server string
passwd string
coinid string
conn *net.TCPConn
}
func newStratumClient(server, passwd, coinid string) *stratumClient {
return &stratumClient{
server: server,
}
}
func (c *stratumClient) dial() error {
addr, err := net.ResolveTCPAddr("tcp", c.server)
if err != nil {
return fmt.Errorf("resolve tcp addr: %w", err)
}
conn, err := net.DialTCP("tcp", nil, addr)
if err != nil {
return fmt.Errorf("dial tcp: %w", err)
}
c.conn = conn
return nil
}
func (c *stratumClient) send(ctx context.Context, msg string) error {
select {
case <-ctx.Done():
return ctx.Err()
default:
}
_, err := c.conn.Write([]byte(msg))
return err
}
func stratumUpdateBlockMsg(stratumPass, coinid, blockHash string) string {
return fmt.Sprintf(`{"id":1,"method":"mining.update_block","params":[%q,%s,%q]}`,
stratumPass, coinid, blockHash)
}