func (m *Miner) handleRequest(req *bitcoin.Message) {
go func() {
nonce := req.Lower
minHash := bitcoin.Hash(req.Data, nonce)
for n := req.Lower + 1; n <= req.Upper; n++ {
hash := bitcoin.Hash(req.Data, n)
if hash < minHash {
minHash = hash
nonce = n
}
}
m.write(bitcoin.NewResult(minHash, nonce))
}()
}
// calculate the minimum hash number and corresponding nonce in the given range
func calculateMinHash(data string, lower, upper uint64) (minHash, nonce uint64) {
minHash = math.MaxUint64
nonce = 0
for i := lower; i <= upper; i++ {
hash := bitcoin.Hash(data, i)
if hash < minHash {
minHash = hash
nonce = i
}
}
fmt.Println(minHash, nonce)
return
}
func main() {
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./miner <hostport>")
return
}
c, neterr := lsp.NewClient(os.Args[1], lsp.NewParams())
if neterr != nil {
fmt.Println(neterr)
}
join := bitcoin.NewJoin()
buf, _ := json.Marshal(join)
err := c.Write(buf)
if err != nil {
c.Close()
}
for {
buf, err := c.Read()
if err != nil {
c.Close()
return
}
var request bitcoin.Message
json.Unmarshal(buf, &request)
var minValue uint64 = math.MaxUint64
var minIndex uint64
for i := request.Lower; i <= request.Upper; i++ {
res := bitcoin.Hash(request.Data, i)
if res < minValue {
minValue = res
minIndex = i
}
}
result := bitcoin.NewResult(minValue, minIndex)
buffer, _ := json.Marshal(result)
error := c.Write(buffer)
if error != nil {
c.Close()
return
}
}
}
func main() {
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./miner <hostport>")
return
}
file, err := os.OpenFile(name, flag, perm)
if err != nil {
return
}
mlx := log.New(file, "", log.Lshortfile|log.Lmicroseconds)
min, err := lsp.NewClient(os.Args[1], lsp.NewParams())
if err != nil {
mlx.Println("cant connect the server")
file.Close()
return
}
msg := bitcoin.NewJoin()
buf, _ := json.Marshal(msg)
hold := min.ConnID()
mlx.Println("get id: ", hold)
errr := min.Write(buf)
if errr != nil {
mlx.Println("write join fail")
min.Close()
file.Close()
return
} else {
mlx.Println("miner: ", hold, " write join done")
mlx.Println(msg.String())
}
for {
v, er := min.Read()
//mlx.Println("+++++")
if er != nil {
mlx.Println(er)
file.Close()
//min.Close()
return
}
msgg := &bitcoin.Message{}
err = json.Unmarshal(v[:], msgg)
mlx.Println("miner: ", hold, " read request->", msgg.String())
mes := msgg.Data
l := msgg.Lower
r := msgg.Upper
var hold, ans1, ans2 uint64
ans2 = 1<<64 - 1
ans1 = 1<<64 - 1
for i := l; i <= r; i++ {
hold = bitcoin.Hash(mes, i)
if hold < ans1 {
ans1 = hold
ans2 = i
} else if hold == ans1 {
if i < ans2 {
ans2 = i
}
}
}
res := bitcoin.NewResult(ans1, ans2)
buf, _ := json.Marshal(res)
errr := min.Write(buf)
if errr != nil {
mlx.Println("miner: ,", hold, " write ans timeout fail")
min.Close()
file.Close()
return
} else {
mlx.Println("miner: ", hold, " write ans done")
mlx.Println(msg.String())
}
}
}
