fix: handle server-timing headers with regex

cfspeedtest/cloudflare.py

@@ -7,6 +7,7 @@
 from __future__ import annotations
 
 import logging
+import re
 import statistics
 import time
 from enum import Enum
@@ -16,6 +17,8 @@
 
 log = logging.getLogger("cfspeedtest")
 
+TIMING_DURATION_RE = re.compile(r"dur=([0-9.]+)")
+
 
 class TestType(Enum):
     """The type of an individual test."""
@@ -191,9 +194,8 @@ def run_test(self, test: TestSpec) -> TestTimers:
                 test.type.value, url, data=data, timeout=self.timeout
             )
             coll.full.append(time.time() - start)
-            coll.server.append(
-                float(r.headers["Server-Timing"].split("=")[1].split(",")[0]) / 1e3
-            )
+            timing_match = TIMING_DURATION_RE.search(r.headers["Server-Timing"])
+            coll.server.append(float(timing_match.group(1)) / 1e3)
             coll.request.append(
                 r.elapsed.seconds + r.elapsed.microseconds / 1e6
             )