From 441373952b639064d7d6d500a4558acb4f872ac4 Mon Sep 17 00:00:00 2001
From: Jean-Louis Huynen <huynenjl@gmail.com>
Date: Mon, 14 Jan 2019 17:11:20 +0100
Subject: [PATCH] add tcpdump example and update building instructions with
 make

---
 README.md | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 046ab8e..891949a 100644
--- a/README.md
+++ b/README.md
@@ -4,14 +4,22 @@ Fetch d4-goclient code and dependencies
 go get github.com/D4-project/d4-goclient
 go get github.com/satori/go.uuid
 ```
+Use make to build binaries:
 ```bash
-go build d4-goclient.go
+make arm5l  # for raspberry pi / linux
+make amd64l # for amd64 / linux
 ```
 # Use
 ## Launch a d4-server
 See https://github.com/D4-project/d4-core/tree/master/server
+$IP_SRV being the d4-server's address, $PORT its listening port
 ## Pipe data into the client
-
+###Some file
 ```bash
-cat /proc/cpuinfo | ./d4-goclient -c conf.sample/ |  socat - OPENSSL-CONNECT:127.0.0.1:4443,verify=0
+cat /proc/cpuinfo | ./d4-goclient -c conf.sample/ |  socat - OPENSSL-CONNECT:$IP_SRV:$PORT,verify=0
+```
+###Tcpdump output, discarding our own traffic
+$IP being the monitoring computer ip
+```bash
+tcpdump not dst $IP and not src $IP -w - | ./d4-goclient -c conf.sample/ |  socat - OPENSSL-CONNECT:$IP_SRV:$PORT,verify=0
 ```