From 2809c966d60a562525ca11d87c208531fba96649 Mon Sep 17 00:00:00 2001
From: sotech117 <michael_foiani@brown.edu>
Date: Mon, 23 Oct 2023 09:58:38 -0400
Subject: fix sent to other iface bug

---
 pkg/ipstack/ipstack.go | 28 +++++++++++++---------------
 1 file changed, 13 insertions(+), 15 deletions(-)

(limited to 'pkg/ipstack/ipstack.go')

diff --git a/pkg/ipstack/ipstack.go b/pkg/ipstack/ipstack.go
index e949824..59afbcd 100644
--- a/pkg/ipstack/ipstack.go
+++ b/pkg/ipstack/ipstack.go
@@ -455,16 +455,12 @@ func SendIP(src *netip.Addr, dest *Neighbor, protocolNum int, message []byte, de
 }
 
 func RecvIP(iface *Interface, isOpen *bool) error {
-	// deconstruct interface
-	prefix := iface.IpPrefix
-	conn := iface.RecvSocket
-
 	buffer := make([]byte, MAX_IP_PACKET_SIZE) // TODO: fix wordking
 
 	// Read on the UDP port
 	// Too much printing so I commented it out
 	// fmt.Println("wating to read from UDP socket")
-	_, _, err := conn.ReadFromUDP(buffer)
+	_, _, err := iface.RecvSocket.ReadFromUDP(buffer)
 	if err != nil {
 		return err
 	}
@@ -520,18 +516,20 @@ func RecvIP(iface *Interface, isOpen *bool) error {
 	if hdr.Protocol != RIP_PROTOCOL {
 		fmt.Println("I see a non-rip packet")
 	}
-	if hdr.Dst == prefix.Addr() {
-		// see if there is a handler for this protocol
-		if handler, ok := protocolHandlers[hdr.Protocol]; ok {
-			if hdr.Protocol != RIP_PROTOCOL {
-				// fmt.Println("this test packet is exactly for me")
-			}
-			err := handler(iface, nil, message, hdr)
-			if err != nil {
-				fmt.Println(err)
+	for _, myIface := range myInterfaces {
+		if hdr.Dst == myIface.IpPrefix.Addr() {
+			// see if there is a handler for this protocol
+			if handler, ok := protocolHandlers[hdr.Protocol]; ok {
+				if hdr.Protocol != RIP_PROTOCOL {
+					// fmt.Println("this test packet is exactly for me")
+				}
+				err := handler(myIface, nil, message, hdr)
+				if err != nil {
+					fmt.Println(err)
+				}
 			}
+			return nil
 		}
-		return nil
 	}
 
 	// 4) check forwarding table.
-- 
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