fix: use semantic versioning format for handshake version check

setup.cfg

@@ -61,7 +61,9 @@ exclude =
 [options.extras_require]
 # Add here additional requirements for extra features, to install with:
 # `pip install flexmeasures-client[s2]` like:
-s2=s2-python>=0.4.1 # reason: be compatible with constraint pydantic>=2.8.2
+s2=
+    s2-python>=0.4.1 # reason: be compatible with constraint pydantic>=2.8.2
+    semver
 
 # Add here test requirements (semicolon/line-separated)
 testing =

src/flexmeasures_client/s2/utils.py

@@ -5,6 +5,7 @@
 from uuid import uuid4
 
 import pydantic
+import semver
 from packaging.version import Version
 
 try:
@@ -83,7 +84,7 @@ def get_reception_status(
     )
 
 
-def is_version_supported(v1: Version, v2: Version) -> bool:
+def is_version_supported(v1: semver.Version, v2: semver.Version) -> bool:
     return v1 >= v2
 
 
@@ -104,8 +105,10 @@ def get_latest_compatible_version(supported_versions, current_version, logger):
         return Version(current_version)
 
     # Convert supported versions to Version objects and sort in descending order
-    rm_versions = sorted((Version(v) for v in supported_versions), reverse=True)
-    cem_version = Version(current_version)
+    rm_versions = sorted(
+        (semver.Version.parse(v) for v in supported_versions), reverse=True
+    )
+    cem_version = semver.Version.parse(current_version)
 
     # Find the latest compatible version
     latest_compatible_version = next(

tests/s2/test_utils.py

@@ -1,7 +1,7 @@
 import logging
 
 import pytest
-from packaging.version import Version
+import semver
 
 from flexmeasures_client.s2.utils import get_latest_compatible_version
 
@@ -52,5 +52,5 @@ def test_get_latest_compatible_version(
 
     if not supported_versions:
         assert "RM didn't provide any supported version" in caplog.text
-    elif latest_version == Version(current_version):
+    elif latest_version == semver.Version.parse(current_version):
         assert "There are no compatible S2 versions" in caplog.text