From 56d87e115c203a9552e7e5bd8afb4da090dbe5b4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Antonio=20Garc=C3=ADa-Dom=C3=ADnguez?= <nyoescape@gmail.com>
Date: Tue, 11 Sep 2018 19:11:13 +0100
Subject: Check if PORT is taken: if so, show message and fall back to Wi-Fi
 (fixes #54)

---
 prepare-videochat.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'prepare-videochat.sh')

diff --git a/prepare-videochat.sh b/prepare-videochat.sh
index ee0cc81..8e5f91d 100755
--- a/prepare-videochat.sh
+++ b/prepare-videochat.sh
@@ -449,8 +449,12 @@ else
         sleep 1;
     done
     if phone_plugged; then
-        "$ADB" $ADB_FLAGS forward tcp:$PORT tcp:$PORT
-        IP=127.0.0.1
+        if ss -ln src :$PORT | grep -q :$PORT; then
+            warning "Your port $PORT seems to be in use: falling back to Wi-Fi. If you would like to use USB forwarding, please free it up and try again."
+        else
+            "$ADB" $ADB_FLAGS forward tcp:$PORT tcp:$PORT
+            IP=127.0.0.1
+        fi
     fi
 fi
 
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