From 8e84465ff95f717bb3df4e19da1246dce6145465 Mon Sep 17 00:00:00 2001
From: Adam Miller <adam@archive.org>
Date: Thu, 5 May 2016 22:31:07 +0000
Subject: [PATCH 1/2] browser.py - Check for open ports before starting Chrome.
 Open next available on conflict

---
 brozzler/browser.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/brozzler/browser.py b/brozzler/browser.py
index aaff56e..585e8e9 100644
--- a/brozzler/browser.py
+++ b/brozzler/browser.py
@@ -34,6 +34,7 @@ from requests.structures import CaseInsensitiveDict
 import select
 import re
 import base64
+import psutil
 
 __all__ = ["BrowserPool", "Browser"]
 
@@ -127,6 +128,7 @@ class Browser:
     def start(self, proxy=None):
         if not self._chrome_instance:
             # these can raise exceptions
+            self.chrome_port = self._find_available_port()
             self._work_dir = tempfile.TemporaryDirectory()
             self._chrome_instance = Chrome(port=self.chrome_port,
                     executable=self.chrome_exe,
@@ -151,6 +153,19 @@ class Browser:
         except:
             self.logger.error("problem stopping", exc_info=True)
 
+    def _find_available_port(self):
+        port_available = False
+        port = self.chrome_port
+        while not port_available:
+            for connection in psutil.net_connections(kind='tcp'):
+                if connection.laddr[1] == port:
+                    self.logger.warn("Port already open %s", port)
+                    port_available = False
+                    port += 1
+                    break
+            port_available = True
+        return port
+
     def is_running(self):
         return bool(self._websocket_url)
 

From 1f7f55a14a925d0ba0e1a37f3ccbc65e6775bceb Mon Sep 17 00:00:00 2001
From: Adam Miller <adam@archive.org>
Date: Thu, 5 May 2016 22:55:45 +0000
Subject: [PATCH 2/2] browser.py - Fix port search logic

---
 brozzler/browser.py | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/brozzler/browser.py b/brozzler/browser.py
index 585e8e9..f34887b 100644
--- a/brozzler/browser.py
+++ b/brozzler/browser.py
@@ -156,14 +156,13 @@ class Browser:
     def _find_available_port(self):
         port_available = False
         port = self.chrome_port
-        while not port_available:
-            for connection in psutil.net_connections(kind='tcp'):
-                if connection.laddr[1] == port:
-                    self.logger.warn("Port already open %s", port)
-                    port_available = False
-                    port += 1
-                    break
-            port_available = True
+
+        for p in range(port,65535):
+            if any(connection.laddr[1] == p for connection in psutil.net_connections(kind='tcp')):
+                self.logger.warn("Port already open %s, will try %s", p, p + 1)
+            else:
+                port = p
+                break
         return port
 
     def is_running(self):