adb: don't hardcode ports in test_adb.
If we get unlucky and something else (or ourselves, in another thread)
beats us to listening on our hardcoded ports, we can deadlock.
Bug: http://b/149829737
Test: ./test_adb.py
Change-Id: I8f14004a6b2e77366abad6e88786ea8941629020
(cherry picked from commit e8829c6bfcf55d9706d38a875bd5764587ee8e86)
diff --git a/adb/test_adb.py b/adb/test_adb.py
index 3d6de26..c872fb0 100755
--- a/adb/test_adb.py
+++ b/adb/test_adb.py
@@ -33,6 +33,11 @@
import unittest
import warnings
+def find_open_port():
+ # Find an open port.
+ with socket.socket() as s:
+ s.bind(("localhost", 0))
+ return s.getsockname()[1]
@contextlib.contextmanager
def fake_adbd(protocol=socket.AF_INET, port=0):
@@ -126,10 +131,7 @@
This creates an ADB server and returns the port it's listening on.
"""
- port = 5038
- # Kill any existing server on this non-default port.
- subprocess.check_output(["adb", "-P", str(port), "kill-server"],
- stderr=subprocess.STDOUT)
+ port = find_open_port()
read_pipe, write_pipe = os.pipe()
if sys.platform == "win32":
@@ -224,10 +226,7 @@
# adb server, this also tests whether multiple instances of the adb
# server conflict on adb.log.
- port = 5038
- # Kill any existing server on this non-default port.
- subprocess.check_output(["adb", "-P", str(port), "kill-server"],
- stderr=subprocess.STDOUT)
+ port = find_open_port()
try:
# We get warnings for unclosed files for the subprocess's pipes,
@@ -289,12 +288,8 @@
"""
Tests that the server can start up on ::1 and that it's accessible
"""
- server_port = 5037
- # Kill any existing server on this non-default port.
- subprocess.check_output(
- ["adb", "-P", str(server_port), "kill-server"],
- stderr=subprocess.STDOUT,
- )
+
+ server_port = find_open_port()
try:
subprocess.check_output(
["adb", "-L", "tcp:[::1]:{}".format(server_port), "server"],