Receive connections and add client

.gitignore

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+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+socket-server
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work

go.mod

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+module socket-server
+
+go 1.19

internal/client.go

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+package internal
+
+import "net"
+
+var Clients map[string]net.Conn
+
+func AddClient(conn net.Conn) {
+	addr := conn.RemoteAddr().(*net.TCPAddr).IP.String()
+	Clients[addr] = conn
+}

internal/tcp.go

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+package internal
+
+import (
+	"log"
+	"net"
+)
+
+func TCPHandler(conn net.Conn) {
+	defer conn.Close()
+	for {
+		var buf = make([]byte, 1024)
+		n, err := conn.Read(buf)
+		if err != nil {
+			log.Default().Println(err)
+			return
+		}
+		log.Default().Println(string(buf[:n]))
+		switch msg := string(buf[:n]); {
+		case msg == "HELO":
+		}
+	}
+
+}

main.go

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+package main
+
+import (
+	"log"
+	"net"
+	"socket-server/internal"
+)
+
+func main() {
+	ln, err := net.Listen("tcp", ":65432")
+	if err != nil {
+		log.Fatal(err)
+		panic(err)
+	}
+	for {
+		conn, err := ln.Accept()
+		if err != nil {
+			log.Fatal(err)
+			panic(err)
+		}
+		go internal.TCPHandler(conn)
+		go internal.AddClient(conn)
+	}
+}