diff --git a/README.md b/README.md
index fec7bf0..4362564 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ Go语言编写的流媒体 库 / 客户端 / 服务端
 ```
 app/                  ......各种main包的源码文件，一个子目录对应一个main包，即对应可生成一个可执行文件
 |-- lal/              ......[最重要的] 流媒体服务器
-|-- flvfile2rtmppush  ......rtmp推流客户端，输入是本地flv文件
+|-- flvfile2rtmppush  ......rtmp推流客户端，输入是本地flv文件，文件推送完毕后，可循环推送（rtmp push流并不断开）
 |-- rtmppull          ......rtmp拉流客户端
 |-- httpflvpull       ......http-flv拉流客户端
 |-- modflvfile        ......修改本地flv文件
@@ -50,10 +50,13 @@ conf/                 ......配置文件目录
 
 ```
 $go get -u github.com/q191201771/lal
-# cd into lal
+# cd into $GOPATH/src/github.com/q191201771/lal
 $./build.sh
 
 $./bin/lal -c conf/lal.conf.json
+
+#如果使用 go module
+$git clone https://github.com/q191201771/lal.git && cd lal && ./build.sh
 ```
 
 #### 配置文件说明
diff --git a/app/flvfile2rtmppush/flvfile2rtmppush.go b/app/flvfile2rtmppush/flvfile2rtmppush.go
index 28298c9..e76c14d 100644
--- a/app/flvfile2rtmppush/flvfile2rtmppush.go
+++ b/app/flvfile2rtmppush/flvfile2rtmppush.go
@@ -2,18 +2,19 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"github.com/q191201771/lal/pkg/httpflv"
 	"github.com/q191201771/lal/pkg/rtmp"
-	"github.com/q191201771/nezha/pkg/errors"
+	"github.com/q191201771/nezha/pkg/bininfo"
 	"github.com/q191201771/nezha/pkg/log"
 	"io"
 	"os"
 	"time"
 )
 
-// 将flv文件通过rtmp协议推送至rtmp服务器
+//rtmp推流客户端，输入是本地flv文件，文件推送完毕后，可循环推送（rtmp push流并不断开）
 //
-// -r 表示当文件推送完毕后，是否循环推送（rtmp push流并不断开）
+// -r 为1时表示当文件推送完毕后，是否循环推送（rtmp push流并不断开）
 //
 // Usage:
 // ./bin/flvfile2rtmppush -r 1 -i /tmp/test.flv -o rtmp://push.xxx.com/live/testttt
@@ -23,13 +24,15 @@ func main() {
 
 	flvFileName, rtmpPushURL, isRecursive := parseFlag()
 
+	log.Info(bininfo.StringifySingleLine())
+
 	ps := rtmp.NewPushSession(rtmp.PushSessionTimeout{
-		ConnectTimeoutMS:3000,
-		PushTimeoutMS:5000,
-		WriteAVTimeoutMS:10000,
+		ConnectTimeoutMS: 3000,
+		PushTimeoutMS:    5000,
+		WriteAVTimeoutMS: 10000,
 	})
 	err = ps.Push(rtmpPushURL)
-	errors.PanicIfErrorOccur(err)
+	log.FatalIfErrorNotNil(err)
 	log.Infof("push succ. url=%s", rtmpPushURL)
 
 	var totalBaseTS uint32
@@ -43,11 +46,11 @@ func main() {
 
 		var ffr httpflv.FlvFileReader
 		err = ffr.Open(flvFileName)
-		errors.PanicIfErrorOccur(err)
+		log.FatalIfErrorNotNil(err)
 		log.Infof("open succ. filename=%s", flvFileName)
 
 		flvHeader, err := ffr.ReadFlvHeader()
-		errors.PanicIfErrorOccur(err)
+		log.FatalIfErrorNotNil(err)
 		log.Infof("read flv header succ. %v", flvHeader)
 
 		hasReadThisBaseTS = false
@@ -58,7 +61,7 @@ func main() {
 				log.Info("EOF")
 				break
 			}
-			errors.PanicIfErrorOccur(err)
+			log.FatalIfErrorNotNil(err)
 
 			// TODO chef: 转换代码放入lal某个包中
 			var h rtmp.Header
@@ -81,7 +84,7 @@ func main() {
 					//log.Debugf("CHEFERASEME write metadata.")
 					chunks := rtmp.Message2Chunks(tag.Raw[11:11+h.MsgLen], &h, rtmp.LocalChunkSize)
 					err = ps.TmpWrite(chunks)
-					errors.PanicIfErrorOccur(err)
+					log.FatalIfErrorNotNil(err)
 				} else {
 					// noop
 				}
@@ -114,7 +117,7 @@ func main() {
 			time.Sleep(time.Duration(diff) * time.Millisecond)
 			//log.Debug("send")
 			err = ps.TmpWrite(chunks)
-			errors.PanicIfErrorOccur(err)
+			log.FatalIfErrorNotNil(err)
 			prevTS = h.Timestamp
 		}
 
@@ -128,10 +131,15 @@ func main() {
 }
 
 func parseFlag() (string, string, bool) {
+	v := flag.Bool("v", false, "show bin info")
 	i := flag.String("i", "", "specify flv file")
 	o := flag.String("o", "", "specify rtmp push url")
 	r := flag.Bool("r", false, "recursive push if reach end of file")
 	flag.Parse()
+	if *v {
+		_, _ = fmt.Fprint(os.Stderr, bininfo.StringifyMultiLine())
+		os.Exit(1)
+	}
 	if *i == "" || *o == "" {
 		flag.Usage()
 		os.Exit(1)
diff --git a/app/lal/main.go b/app/lal/main.go
index dec5c43..8fc72f8 100644
--- a/app/lal/main.go
+++ b/app/lal/main.go
@@ -32,7 +32,7 @@ func parseFlag() string {
 	cf := flag.String("c", "", "specify conf file")
 	flag.Parse()
 	if *binInfoFlag {
-		fmt.Fprint(os.Stderr, bininfo.StringifyMultiLine())
+		_, _ = fmt.Fprint(os.Stderr, bininfo.StringifyMultiLine())
 		os.Exit(1)
 	}
 	if *cf == "" {
diff --git a/app/rtmppull/rtmppull.go b/app/rtmppull/rtmppull.go
index 9b7cc5b..f877484 100644
--- a/app/rtmppull/rtmppull.go
+++ b/app/rtmppull/rtmppull.go
@@ -19,9 +19,9 @@ func main() {
 	url := parseFlag()
 	var obs Obs
 	session := rtmp.NewPullSession(obs, rtmp.PullSessionTimeout{
-		ConnectTimeoutMS:3000,
-		PullTimeoutMS:5000,
-		ReadAVTimeoutMS:10000,
+		ConnectTimeoutMS: 3000,
+		PullTimeoutMS:    5000,
+		ReadAVTimeoutMS:  10000,
 	})
 	err := session.Pull(url)
 	errors.PanicIfErrorOccur(err)
diff --git a/build.sh b/build.sh
index 21ca2ce..f2b6768 100755
--- a/build.sh
+++ b/build.sh
@@ -3,7 +3,6 @@
 set -x
 
 ROOT_DIR=`pwd`
-echo ${ROOT_DIR}/bin
 
 if [ ! -d ${ROOT_DIR}/bin ]; then
   mkdir bin
@@ -15,17 +14,18 @@ GitStatus=`git status -s`
 BuildTime=`date +'%Y.%m.%d.%H%M%S'`
 BuildGoVersion=`go version`
 
-cd ${ROOT_DIR}/app/lal && \
-  go build -ldflags " \
+LDFlags=" \
     -X 'github.com/q191201771/nezha/pkg/bininfo.GitCommitLog=${GitCommitLog}' \
     -X 'github.com/q191201771/nezha/pkg/bininfo.GitStatus=${GitStatus}' \
     -X 'github.com/q191201771/nezha/pkg/bininfo.BuildTime=${BuildTime}' \
     -X 'github.com/q191201771/nezha/pkg/bininfo.BuildGoVersion=${BuildGoVersion}' \
-  " -o ${ROOT_DIR}/bin/lal
+"
 
-cd ${ROOT_DIR}/app/flvfile2es && go build -o ${ROOT_DIR}/bin/flvfile2es
+cd ${ROOT_DIR}/app/lal && go build -ldflags "$LDFlags" -o ${ROOT_DIR}/bin/lal
+
+cd ${ROOT_DIR}/app/flvfile2rtmppush && go build -ldflags "$LDFlags" -o ${ROOT_DIR}/bin/flvfile2rtmppush
 
-cd ${ROOT_DIR}/app/flvfile2rtmppush && go build -o ${ROOT_DIR}/bin/flvfile2rtmppush
+cd ${ROOT_DIR}/app/flvfile2es && go build -o ${ROOT_DIR}/bin/flvfile2es
 
 cd ${ROOT_DIR}/app/httpflvpull && go build -o ${ROOT_DIR}/bin/httpflvpull
 
diff --git a/build_linux.sh b/build_linux.sh
index a98104f..b77dd45 100755
--- a/build_linux.sh
+++ b/build_linux.sh
@@ -2,36 +2,6 @@
 
 set -x
 
-ROOT_DIR=`pwd`
-echo ${ROOT_DIR}/bin
-
-if [ ! -d ${ROOT_DIR}/bin ]; then
-  mkdir bin
-fi
-
-#GitCommitID=`git log --pretty=format:'%h' -n 1`
-GitCommitLog=`git log --pretty=oneline -n 1`
-GitStatus=`git status -s`
-BuildTime=`date +'%Y.%m.%d.%H%M%S'`
-BuildGoVersion=`go version`
-
-cd ${ROOT_DIR}/app/lal && \
-  GOOS=linux GOARCH=amd64 go build -ldflags " \
-    -X 'github.com/q191201771/nezha/pkg/bininfo.GitCommitLog=${GitCommitLog}' \
-    -X 'github.com/q191201771/nezha/pkg/bininfo.GitStatus=${GitStatus}' \
-    -X 'github.com/q191201771/nezha/pkg/bininfo.BuildTime=${BuildTime}' \
-    -X 'github.com/q191201771/nezha/pkg/bininfo.BuildGoVersion=${BuildGoVersion}' \
-  " -o ${ROOT_DIR}/bin/lal.linux
-
-cd ${ROOT_DIR}/app/flvfile2es && GOOS=linux GOARCH=amd64 go build -o ${ROOT_DIR}/bin/flvfile2es
-
-cd ${ROOT_DIR}/app/flvfile2rtmppush && GOOS=linux GOARCH=amd64 go build -o ${ROOT_DIR}/bin/flvfile2rtmppush.linux
-
-cd ${ROOT_DIR}/app/httpflvpull && GOOS=linux GOARCH=amd64 go build -o ${ROOT_DIR}/bin/httpflvpull
-
-cd ${ROOT_DIR}/app/modflvfile && GOOS=linux GOARCH=amd64 go build -o ${ROOT_DIR}/bin/modflvfile
-
-cd ${ROOT_DIR}/app/rtmppull && GOOS=linux GOARCH=amd64 go build -o ${ROOT_DIR}/bin/rtmppull
-
-${ROOT_DIR}/bin/lal -v
-ls -lrt ${ROOT_DIR}/bin
+export GOOS=linux
+export GOARCH=amd64
+sh build.sh
diff --git a/go.mod b/go.mod
index 954d74d..c031e68 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/q191201771/lal
 
 go 1.12
 
-require github.com/q191201771/nezha v0.0.1
+require github.com/q191201771/nezha v0.0.2-0.20190904074707-20fd1445a085
diff --git a/go.sum b/go.sum
index b2908db..93ea4c7 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-github.com/q191201771/nezha v0.0.1 h1:WVHhbw98eYrGBcznuErr1hGeNzBeoxHh5hNRErc6ofY=
-github.com/q191201771/nezha v0.0.1/go.mod h1:Rd4R+bJRemlSUnz7KHmSX6ZQlsHLBjT7wlzuLeOia/M=
+github.com/q191201771/nezha v0.0.2-0.20190904074707-20fd1445a085 h1:S6/SulRptcCXgV6hbbWGgqiKmMLf7iXHjT6Qomj5qdk=
+github.com/q191201771/nezha v0.0.2-0.20190904074707-20fd1445a085/go.mod h1:Rd4R+bJRemlSUnz7KHmSX6ZQlsHLBjT7wlzuLeOia/M=
diff --git a/pkg/rtmp/chunk_divider.go b/pkg/rtmp/chunk_divider.go
index 68ab052..5f673f5 100644
--- a/pkg/rtmp/chunk_divider.go
+++ b/pkg/rtmp/chunk_divider.go
@@ -5,7 +5,6 @@ package rtmp
 // 将message切割成chunk
 
 import (
-	"github.com/q191201771/nezha/pkg/log"
 	"github.com/q191201771/nezha/pkg/bele"
 )
 
@@ -84,7 +83,7 @@ func calcHeader(header *Header, prevHeader *Header) []byte {
 
 	// 设置扩展时间戳
 	if timestamp > maxTimestampInMessageHeader {
-		log.Debugf("CHEFERASEME %+v %+v %d %d", header, prevHeader, timestamp, index)
+		//log.Debugf("CHEFERASEME %+v %+v %d %d", header, prevHeader, timestamp, index)
 		bele.BEPutUint32(out[index:], timestamp)
 		index += 4
 	}
diff --git a/pkg/rtmp/client_session.go b/pkg/rtmp/client_session.go
index 3f126f4..ce7ac89 100644
--- a/pkg/rtmp/client_session.go
+++ b/pkg/rtmp/client_session.go
@@ -168,7 +168,7 @@ func (s *ClientSession) doMsg(stream *Stream) error {
 }
 
 func (s *ClientSession) doAck(stream *Stream) error {
-	seqNum := bele.BEUint32(stream.msg.buf[stream.msg.b: stream.msg.e])
+	seqNum := bele.BEUint32(stream.msg.buf[stream.msg.b:stream.msg.e])
 	log.Infof("-----> Acknowledgement. [%s] ignore. sequence number=%d.", s.UniqueKey, seqNum)
 	return nil
 }
diff --git a/pkg/rtmp/group.go b/pkg/rtmp/group.go
index 1624830..7d5636d 100644
--- a/pkg/rtmp/group.go
+++ b/pkg/rtmp/group.go
@@ -91,7 +91,7 @@ func (group *Group) DelSubSession(session *ServerSession) {
 func (group *Group) Pull(addr string, connectTimeout int64) {
 	// TODO chef: config me,
 	group.pullSession = NewPullSession(group, PullSessionTimeout{
-		ConnectTimeoutMS:int(connectTimeout),
+		ConnectTimeoutMS: int(connectTimeout),
 	})
 
 	defer func() {
diff --git a/pkg/rtmp/rtmp.go b/pkg/rtmp/rtmp.go
index 9417f2f..4181fa4 100644
--- a/pkg/rtmp/rtmp.go
+++ b/pkg/rtmp/rtmp.go
@@ -23,7 +23,7 @@ const (
 	TypeidVideo              = 9
 	TypeidDataMessageAMF0    = 18 // meta
 	typeidSetChunkSize       = 1
-	typeidAck         = 3
+	typeidAck                = 3
 	typeidUserControl        = 4
 	typeidWinAckSize         = 5
 	typeidBandwidth          = 6