Remove dependency on spew

Author: IngmarStein

cmd/root.go

@@ -34,10 +34,7 @@ var debug bool
 // rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
 	Use:   "tcp-multiplexer",
-	Short: "A brief description of your application",
-	// Uncomment the following line if your bare application
-	// has an action associated with it:
-	//	Run: func(cmd *cobra.Command, args []string) { },
+	Short: "Multiplex multiple connections into a single TCP connection.",
 }
 
 // Execute adds all child commands to the root command and sets flags appropriately.

example/dummy-iso8583-client/main.go

@@ -8,7 +8,6 @@ import (
 	"net"
 	"os"
 
-	"github.com/davecgh/go-spew/spew"
 	"github.com/ingmarstein/tcp-multiplexer/pkg/message"
 )
 
@@ -38,7 +37,7 @@ func main() {
 		msg, err := message.ISO8583MessageReader{}.ReadMessage(conn)
 		handleErr(err)
 
-		spew.Dump(msg)
+		fmt.Printf("%x\n", msg)
 	}
 }
 

example/http-server/main.go

@@ -6,8 +6,6 @@ import (
 	"net/http"
 	"net/http/httputil"
 	"os"
-
-	"github.com/davecgh/go-spew/spew"
 )
 
 func getPort() string {
@@ -23,7 +21,7 @@ func headers(w http.ResponseWriter, req *http.Request) {
 	if err != nil {
 		fmt.Println(err)
 	}
-	spew.Dump(dump)
+	fmt.Println(dump)
 
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	w.Write([]byte(html.EscapeString(string(dump))))

go.mod

@@ -2,14 +2,9 @@ module github.com/ingmarstein/tcp-multiplexer
 
 go 1.23.2
 
-require (
-	github.com/davecgh/go-spew v1.1.1
-	github.com/spf13/cobra v1.8.1
-)
+require github.com/spf13/cobra v1.8.1
 
 require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,18 +1,10 @@
 github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
 github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

pkg/message/http.go

@@ -10,8 +10,6 @@ import (
 	"net/textproto"
 	"strconv"
 	"strings"
-
-	"github.com/davecgh/go-spew/spew"
 )
 
 // https://tools.ietf.org/html/rfc2616
@@ -110,7 +108,7 @@ func (H HTTPMessageReader) ReadMessage(conn io.Reader) ([]byte, error) {
 
 	msg := dumpHTTPMessage(startLine, headers, body)
 
-	slog.Debug(spew.Sdump(msg))
+	slog.Debug(string(msg))
 
 	return msg, err
 }

pkg/message/mpu_test.go

@@ -4,8 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"testing"
-
-	"github.com/davecgh/go-spew/spew"
 )
 
 func TestMPUMessageReader_ReadMessage(t *testing.T) {
@@ -17,11 +15,11 @@ func TestMPUMessageReader_ReadMessage(t *testing.T) {
 		buf.WriteByte('a')
 	}
 	buf.WriteString("another message")
-	spew.Dump(buf.Bytes())
+	fmt.Printf("%x\n", buf)
 
 	iso, err := MPUMessageReader{}.ReadMessage(bytes.NewReader(buf.Bytes()))
 	if err != nil {
 		t.Fatal("Expected no error, but got:", err)
 	}
-	spew.Dump(iso)
+	fmt.Printf("%x\n", iso)
 }

pkg/multiplexer/multiplexer.go

@@ -8,7 +8,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/davecgh/go-spew/spew"
 	"github.com/ingmarstein/tcp-multiplexer/pkg/message"
 )
 
@@ -127,7 +126,7 @@ func (mux *Multiplexer) handleConnection(conn net.Conn, sender chan<- *reqContai
 			break
 		}
 
-		slog.Debug(fmt.Sprintf("Message from client...\n%s", spew.Sdump(msg)))
+		slog.Debug(fmt.Sprintf("Message from client...\n%x\n", msg))
 
 		// enqueue request msg to target conn loop
 		sender <- &reqContainer{
@@ -234,7 +233,7 @@ func (mux *Multiplexer) targetConnLoop(requestQueue <-chan *reqContainer) {
 			err:     err,
 		}
 
-		slog.Debug(fmt.Sprintf("Message from target server...\n%s", spew.Sdump(msg)))
+		slog.Debug(fmt.Sprintf("Message from target server...\n%x\n", msg))
 
 		if err != nil {
 			slog.Error(fmt.Sprintf("target connection: %v", err))