chore: send bytes all at once

Author: jackwotherspoon

google/cloud/alloydb/connector/connector.py

@@ -233,10 +233,8 @@ def metadata_exchange(
         # pack big-endian unsigned integer (4 bytes)
         packed_len = struct.pack(">I", req.ByteSize())
 
-        # send metadata message length
-        sock.sendall(packed_len)
-        # send metadata request message
-        sock.sendall(req.SerializeToString())
+        # send metadata message length and request message
+        sock.sendall(packed_len + req.SerializeToString())
 
         # form metadata exchange response
         resp = connectorspb.MetadataExchangeResponse()

tests/unit/mocks.py

@@ -256,10 +256,8 @@ def metadata_exchange(sock: ssl.SSLSocket) -> None:
     # pack big-endian unsigned integer (4 bytes)
     resp_len = struct.pack(">I", resp.ByteSize())
 
-    # send metadata response message length
-    sock.sendall(resp_len)
-    # send metadata request response message
-    sock.sendall(resp.SerializeToString())
+    # send metadata response length and response message
+    sock.sendall(resp_len + resp.SerializeToString())
 
 
 class FakeConnectionInfo: