server data rx changes

server/utils/raw_packet_send.go

@@ -2,16 +2,18 @@ package utils
 
 import (
 	"encoding/binary"
-	"fmt"
 	"log"
+	"time"
+
+	//"fmt"
+	//"log"
 	"net"
 	"unicode/utf8"
 
 	"github.com/google/gopacket"
 	"github.com/google/gopacket/layers"
 	"github.com/mdlayher/packet"
-
-	"saprusserver/structs"
+	//"saprusserver/structs"
 )
 
 type SocketCall struct {
@@ -21,8 +23,8 @@ type SocketCall struct {
 
 func splitData(message string) []string {
         data := []string{}
-	maxPacketLength := 8
-	//maxPacketLength := 1458
+	//maxPacketLength := 8
+	maxPacketLength := 1449
 
         var i, j int
 
@@ -46,14 +48,26 @@ func (c* SocketCall)SendData(message string) {
 	iface, _ := net.InterfaceByName("virbr0")
 	c.Iface = iface
 
-        conn, _ := packet.Listen(iface, packet.Raw, int(layers.EthernetTypeIPv4), nil)
+        conn, err := packet.Listen(iface, packet.Raw, int(layers.EthernetTypeIPv4), nil)
 	c.conn = conn
 
+	if err != nil {
+		log.Panic(err)
+	}
+
         splitMessage := splitData(message)
 
+	c.SendPackage(c.InitFileTransferPacket())
+
         for i := 0; i < len(splitMessage); i++ {
-		c.SendPackage(c.FileTransferPacket(splitMessage[i]))
+		c.SendPackage(c.FileTransferPacket(splitMessage[i], uint16(i)))
+		time.Sleep(20 * time.Microsecond)
         }
+
+	time.Sleep(200 * time.Microsecond)
+
+	c.SendPackage(c.EndFileTransferPacket())
+
         return
 }