func main() {
const numArgs = 4
if len(os.Args) != numArgs {
fmt.Println("Usage: ./client <hostport> <message> <maxNonce>")
return
}
file, err := os.OpenFile(name, flag, perm)
if err != nil {
return
}
mlx := log.New(file, "", log.Lshortfile|log.Lmicroseconds)
cli, err := lsp.NewClient(os.Args[1], lsp.NewParams())
if err != nil {
mlx.Println("cant connect the server")
file.Close()
return
}
//mlx.Println("cant connect the server")
//fmt.Println(parms.WindowSize)
mlx.Println("req: ", os.Args[0], os.Args[1], os.Args[2], os.Args[3])
na, _ := strconv.ParseUint(os.Args[3], 10, 64)
msg := bitcoin.NewRequest(os.Args[2], 0, na)
buf, _ := json.Marshal(msg)
hold := cli.ConnID()
mlx.Println("get id: ", hold)
errr := cli.Write(buf)
if errr != nil {
printDisconnected()
mlx.Println("client: ", hold, "write fail")
cli.Close()
file.Close()
return
} else {
mlx.Println("client: ", hold, " write done")
mlx.Println(msg.String())
}
v, er := cli.Read()
//mlx.Println("+++++")
if er != nil {
printDisconnected()
mlx.Println(er)
file.Close()
//cli.Close()
} else {
//n := bytes.Index(v, []byte{0})
msgg := &bitcoin.Message{}
err = json.Unmarshal(v[:], msgg)
mlx.Println("client: ", hold, " read->", msgg.String())
printResult(strconv.FormatUint(msgg.Hash, 10), strconv.FormatUint(msgg.Nonce, 10))
cli.Close()
file.Close()
}
}
func NewMiner(hostport string, params *lsp.Params) (*Miner, error) {
client, err := lsp.NewClient(hostport, params)
if err != nil {
return nil, fmt.Errorf("cannot create miner :%v", err)
}
return &Miner{
client: client,
}, nil
}
func NewClient(hostport string, params *lsp.Params, done chan bool) (*Client, error) {
client, err := lsp.NewClient(hostport, params)
if err != nil {
return nil, err
}
c := &Client{
client: client,
done: done,
}
return c, nil
}
func main() {
const numArgs = 4
if len(os.Args) != numArgs {
fmt.Println("Usage: ./client <hostport> <message> <maxNonce>")
return
}
hostport := os.Args[1]
data := os.Args[2]
maxNonce, err := strconv.ParseUint(os.Args[3], 10, 64)
if err != nil {
fmt.Println("error when parsing maxNonce")
return
}
params := lsp.NewParams()
lspClient, err := lsp.NewClient(hostport, params)
if err != nil {
fmt.Println("cannot craete client or connect to the server")
return
}
reqMsg := bitcoin.NewRequest(data, 0, maxNonce)
buf, err := json.Marshal(reqMsg)
if err != nil {
fmt.Println("error when marshalling")
return
}
err = lspClient.Write(buf)
if err != nil {
fmt.Println("unable to write to server, connection lost")
return
}
buf, err = lspClient.Read()
if err != nil {
printDisconnected()
return
}
resultMsg := &bitcoin.Message{}
err = json.Unmarshal(buf, resultMsg)
if err != nil {
fmt.Println("error when unmarshalling")
return
}
printResult(strconv.FormatUint(resultMsg.Hash, 10), strconv.FormatUint(resultMsg.Nonce, 10))
}
func main() {
var err error
const numArgs = 2
if len(os.Args) != numArgs {
fmt.Println("Usage: ./miner <hostport>")
return
}
hostport := os.Args[1]
fmt.Println(hostport)
params := lsp.NewParams()
lspClient, err = lsp.NewClient(hostport, params)
if err != nil {
fmt.Println("cannot craete client or connect to the server")
return
}
// send Join message to the server
joinMsg := bitcoin.NewJoin()
err = sendMessage(joinMsg)
if err != nil {
fmt.Println(err)
return
}
for {
buf, err := lspClient.Read()
if err != nil {
fmt.Println("connection lost when reading from server")
return
}
reqMsg := &bitcoin.Message{}
err = json.Unmarshal(buf, reqMsg)
if err != nil {
fmt.Println("error when unmarshalling message")
return
}
// calculate the minhash and nonce and send the result back to server
fmt.Println("calculating... ", reqMsg.Data, reqMsg.Lower, reqMsg.Upper)
hash, nonce := calculateMinHash(reqMsg.Data, reqMsg.Lower, reqMsg.Upper)
resultMsg := bitcoin.NewResult(hash, nonce)
fmt.Println("sending back result: ", hash, nonce)
sendMessage(resultMsg)
}
}
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() {
flag.Parse()
if !*showLogs {
log.SetOutput(ioutil.Discard)
}
lspnet.SetClientReadDropPercent(*readDrop)
lspnet.SetClientWriteDropPercent(*writeDrop)
params := &lsp.Params{
EpochLimit: *epochLimit,
EpochMillis: *epochMillis,
WindowSize: *windowSize,
}
hostport := lspnet.JoinHostPort(*host, strconv.Itoa(*port))
fmt.Printf("Connecting to server at '%s'...\n", hostport)
cli, err := lsp.NewClient(hostport, params)
if err != nil {
fmt.Printf("Failed to connect to server at %s: %s\n", hostport, err)
return
}
runClient(cli)
}
func main() {
const numArgs = 4
if len(os.Args) != numArgs {
fmt.Println("Usage: ./client <hostport> <message> <maxNonce>")
return
}
// TODO: implement this!
c, err := lsp.NewClient(os.Args[1], lsp.NewParams())
if err != nil {
printDisconnected()
return
}
max, _ := strconv.ParseUint(os.Args[3], 10, 64)
request := bitcoin.NewRequest(os.Args[2], 0, max)
buf, _ := json.Marshal(request)
//write to server
err = c.Write(buf)
if err != nil {
printDisconnected()
return
}
//read from server
buf, err = c.Read()
if err != nil {
printDisconnected()
return
}
var result bitcoin.Message
err = json.Unmarshal(buf, &result)
if err != nil {
printDisconnected()
return
}
printResult(strconv.FormatUint(result.Hash, 10), strconv.FormatUint(result.Nonce, 10))
c.Close()
}
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())
}
}
}