Add option to send data over a tcp socket

This reducec the dropbear cpu usage to basically
nothing, since the traffic does not need encryption
anymore.

This option uses the nc command on the client side.
So this will not work with windows as of now!

reStream.sh

@@ -9,6 +9,7 @@ webcam=false               # not to a webcam
 measure_throughput=false   # measure how fast data is being transferred
 window_title=reStream      # stream window title is reStream
 video_filters=""           # list of ffmpeg filters to apply
+unsecure_connection=false  # Establish a unsecure connection that is faster
 
 # loop through arguments and process them
 while [ $# -gt 0 ]; do
@@ -62,8 +63,12 @@ while [ $# -gt 0 ]; do
             shift
             shift
             ;;
+        -u | --unsecure-connection)
+            unsecure_connection=true
+            shift
+            ;;
         -h | --help | *)
-            echo "Usage: $0 [-p] [-s <source>] [-o <output>] [-f <format>] [-t <title>]"
+            echo "Usage: $0 [-p] [-u] [-s <source>] [-o <output>] [-f <format>] [-t <title>]"
             echo "Examples:"
             echo "	$0                              # live view in landscape"
             echo "	$0 -p                           # live view in portrait"
@@ -71,6 +76,7 @@ while [ $# -gt 0 ]; do
             echo "	$0 -o remarkable.mp4            # record to a file"
             echo "	$0 -o udp://dest:1234 -f mpegts # record to a stream"
             echo "  $0 -w                           # write to a webcam (yuv420p + resize)"
+            echo "  $0 -u                           # establish a unsecure but faster connection"
             exit 1
             ;;
     esac
@@ -179,8 +185,18 @@ fi
 
 set -e # stop if an error occurs
 
+receive_cmd="ssh_cmd ./restream"
+#echo './restream --connect "$(echo $SSH_CLIENT | cut -d " " -f1):61819"'
+#receive_cmd="ssh_cmd 'echo ABC $(echo $SSH_CLIENT | cut -d " " -f1):61819' & ; nc -l -p 61819"
+
+if $unsecure_connection; then
+  echo "Spawning unsecure connection"
+  ssh_cmd 'sleep 0.25 && ./restream --connect "$(echo $SSH_CLIENT | cut -d " " -f1):61819"' &
+  receive_cmd="nc -l -p 61819"
+fi
+
 # shellcheck disable=SC2086
-ssh_cmd "./restream" \
+$receive_cmd \
     | $decompress \
     | $host_passthrough \
     | "$output_cmd" \