[adb client] Add "adb mdns check" command.
This command will check if the mdns daemon is available on the host
machine.
Bug: 152510294
Test: pkill -9 mdnsd; adb mdns check; mdnsd; adb mdns check;
Test: test_adb.py
Change-Id: If644678a339763817a8a7adcbdc545626d161aba
diff --git a/adb/test_adb.py b/adb/test_adb.py
index c872fb0..6989e3b 100755
--- a/adb/test_adb.py
+++ b/adb/test_adb.py
@@ -576,6 +576,17 @@
# If the power event was detected, the adb shell command should be broken very quickly.
self.assertLess(end - start, 2)
+"""Use 'adb mdns check' to see if mdns discovery is available."""
+def is_adb_mdns_available():
+ with adb_server() as server_port:
+ output = subprocess.check_output(["adb", "-P", str(server_port),
+ "mdns", "check"]).strip()
+ return output.startswith(b"mdns daemon version")
+
+@unittest.skipIf(not is_adb_mdns_available(), "mdns feature not available")
+class MdnsTest(unittest.TestCase):
+ """Tests for adb mdns."""
+ pass
def main():
"""Main entrypoint."""