From b96f3ce26dc518c165f1939be1f5b7ed6f2e8701 Mon Sep 17 00:00:00 2001
From: Jeff Carr <jcarr@wit.com>
Date: Mon, 17 Mar 2025 05:08:46 -0500
Subject: [PATCH] attempt to drain the sockets

---
 Makefile |  6 +++---
 main.go  | 47 +++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 48 insertions(+), 5 deletions(-)

diff --git a/Makefile b/Makefile
index 1b8cb25..1caa794 100644
--- a/Makefile
+++ b/Makefile
@@ -3,9 +3,9 @@
 VERSION = $(shell git describe --tags)
 BUILDTIME = $(shell date +%Y.%m.%d_%H%M)
 
-all: proto build
+all: proto install
 	@#./gus --config /etc/gus/gus.text
-	./gus --me
+	gus --me
 
 gocui: build
 	./gus --gui gocui --config /etc/gus/gus.text >/tmp/gocui.log 2>&1
@@ -14,7 +14,7 @@ build: goimports vet
 	GO111MODULE=off go build -v -x \
 		-ldflags "-X main.VERSION=${VERSION} -X main.BUILDTIME=${BUILDTIME} -X gui.GUIVERSION=${VERSION}"
 
-install:
+install: goimports vet
 	GO111MODULE=off go install -v -x \
 		-ldflags "-X main.VERSION=${VERSION} -X main.BUILDTIME=${BUILDTIME} -X gui.GUIVERSION=${VERSION}"
 
diff --git a/main.go b/main.go
index 42dffc3..c40a1ce 100644
--- a/main.go
+++ b/main.go
@@ -14,6 +14,8 @@ import (
 	sync "sync"
 	"time"
 
+	"github.com/svent/go-nbreader"
+
 	"github.com/google/uuid"
 	"go.wit.com/dev/alexflint/arg"
 	"go.wit.com/gui"
@@ -254,6 +256,14 @@ func ioCopy(clientConn, targetConn net.Conn) {
 	defer clientConn.Close()
 	defer targetConn.Close()
 
+	/*
+		if !argv.UseME {
+			// Drain existing data
+			drainConnection(clientConn)
+			drainConnection(targetConn)
+		}
+	*/
+
 	var wg sync.WaitGroup
 	wg.Add(2)
 
@@ -287,8 +297,7 @@ func connectME() {
 	}
 
 	localport := "25910"
-	// where := "104.48.38.253:25910"
-	where := "104.48.38.253:8081"
+	where := argv.URL
 	dest, err := net.Dial("tcp", where)
 	if err != nil {
 		log.Printf("Failed to connect to %s %v\n", where, err)
@@ -356,3 +365,37 @@ func getFQDN(hostname string) (string, error) {
 
 	return "", fmt.Errorf("no FQDN found for hostname: %s", hostname)
 }
+
+// drainConnection reads and discards any pending data before copying
+func drainConnection(conn net.Conn) {
+	// Create a non-blocking reader with a timeout of 1 second
+	reader := nbreader.NewNBReader(conn, 1024, nbreader.Timeout(time.Second))
+
+	buffer := make([]byte, 1024)
+
+	var count int
+
+	for {
+		// Attempt to read data from the reader
+		n, err := reader.Read(buffer)
+		if err != nil {
+			log.Info("error was:", err)
+			// Handle error, such as timeout or end of stream
+			break
+		}
+
+		if n > 0 {
+			log.Info("chunk size was", n, "buffer =", string(buffer))
+			count = 0
+			continue
+		}
+
+		count += 1
+		if count > 3 {
+			log.Info("buffer is drained")
+			return
+		}
+
+		// Process the read data (buffer[:n])
+	}
+}