Package Socket:

- fix tcp,udp,unix socket
- add socket unixgram for session less unix socket
- optmize process & code
- add some standalone test for server / client (add example server config for
  rsyslog)

Package Network/Protocol:
- add unixgram protocol

Package Errors:
- fix bug in loop to prevent circular include

test/test-socket-server-tcp/main.go

@@ -0,0 +1,97 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022 Nicolas JUHEL
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ *
+ */
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"net"
+	"os"
+
+	netptl "github.com/nabbar/golib/network/protocol"
+	libsiz "github.com/nabbar/golib/size"
+	libsck "github.com/nabbar/golib/socket"
+	sckcfg "github.com/nabbar/golib/socket/config"
+)
+
+func config() sckcfg.ServerConfig {
+	return sckcfg.ServerConfig{
+		Network:      netptl.NetworkTCP,
+		Address:      ":9000",
+		PermFile:     0,
+		BuffSizeRead: 32 * libsiz.SizeKilo,
+	}
+}
+
+func Handler(request io.Reader, response io.Writer) {
+	_, e := io.Copy(os.Stdout, request)
+	printError(e)
+}
+
+func printError(err ...error) {
+	for _, e := range err {
+		if e == nil {
+			continue
+		}
+		_, _ = fmt.Fprintf(os.Stderr, "Error: %v\n", e)
+	}
+}
+
+func checkPanic(err ...error) {
+	var found = false
+	for _, e := range err {
+		if e == nil {
+			continue
+		}
+
+		found = true
+		printError(err...)
+		break
+	}
+
+	if found {
+		panic(nil)
+	}
+}
+
+func main() {
+	srv, err := config().New(Handler)
+	checkPanic(err)
+
+	srv.RegisterFuncError(func(e error) {
+		printError(e)
+	})
+	srv.RegisterFuncInfo(func(local, remote net.Addr, state libsck.ConnState) {
+		_, _ = fmt.Fprintf(os.Stdout, "[%s %s]=>[%s %s] %s\n", remote.Network(), remote.String(), local.Network(), local.String(), state.String())
+	})
+	srv.RegisterFuncInfoServer(func(msg string) {
+		_, _ = fmt.Fprintf(os.Stdout, "%s\n", msg)
+	})
+
+	checkPanic(srv.Listen(context.Background()))
+}