From 4949ab1e4e02232f277803df370aa2ae2a6d0e9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gustavo=20I=C3=B1iguez=20Goia?= <gooffy1@gmail.com>
Date: Tue, 20 Oct 2020 19:00:00 +0200
Subject: [PATCH] allow to filter connections by protocol

Added option to filter connections by protocol.

Just add an operand "protocol" as follow:
```
  "operator": {
    "type": "simple",
    "operand": "protocol",
    "sensitive": false,
    "data": "tcp",
    "list": []
  }
```

closes #64
---
 daemon/rule/operator.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/daemon/rule/operator.go b/daemon/rule/operator.go
index 88aa8ae2ef..a2210c4715 100644
--- a/daemon/rule/operator.go
+++ b/daemon/rule/operator.go
@@ -31,6 +31,7 @@ const (
 	OpDstIP               = Operand("dest.ip")
 	OpDstHost             = Operand("dest.host")
 	OpDstPort             = Operand("dest.port")
+	OpProto               = Operand("protocol")
 	OpList                = Operand("list")
 )
 
@@ -130,6 +131,8 @@ func (o *Operator) Match(con *conman.Connection) bool {
 		return o.cb(con.DstIP.String())
 	} else if o.Operand == OpDstHost && con.DstHost != "" {
 		return o.cb(con.DstHost)
+	} else if o.Operand == OpProto {
+		return o.cb(con.Protocol)
 	} else if o.Operand == OpDstPort {
 		return o.cb(fmt.Sprintf("%d", con.DstPort))
 	} else if o.Operand == OpList {