From 25291033269bc22c25450b0c1023c868c1c8c9cc Mon Sep 17 00:00:00 2001
From: Chih-Wei Huang <cwhuang@linux.org.tw>
Date: Sun, 10 Jun 2018 16:07:54 +0800
Subject: [PATCH] qemu-android: find an available port to listen

The script may fail to launch because the port 5555 is bound, e.g.,
another instance is running. The change tries to find an available
port to avoid such an issue.
---
 rpm/qemu-android | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/rpm/qemu-android b/rpm/qemu-android
index ac7869b..5e5dc8c 100644
--- a/rpm/qemu-android
+++ b/rpm/qemu-android
@@ -39,7 +39,7 @@ elif [ -e data.img ]; then
 	fi
 fi
 
-run_qemu()
+run_qemu_on_port()
 {
 	$QEMU -enable-kvm \
 	-kernel kernel \
@@ -51,10 +51,19 @@ run_qemu()
 	-boot menu=on \
 	-drive index=0,if=virtio,id=system,file=$SYSTEMIMG,format=raw,readonly \
 	-drive index=1,if=virtio,id=ramdisk,file=ramdisk.img,format=raw,readonly \
-	-netdev user,id=mynet,hostfwd=tcp::5555-:5555 -device virtio-net-pci,netdev=mynet \
+	-netdev user,id=mynet,hostfwd=tcp::$port-:5555 -device virtio-net-pci,netdev=mynet \
 	$DATA $@
 }
 
+run_qemu()
+{
+	port=5555
+	while [ $port -lt 5600 ]; do
+		run_qemu_on_port $@ && break
+		let port++
+	done
+}
+
 # Try to run QEMU in several VGA modes
 run_qemu -vga virtio -display sdl,gl=on $@ || \
 run_qemu -vga qxl -display sdl $@ || \
-- 
2.11.0