Added urllib3 < 2.X compatibility for the Retry object

Added matrix to test if it also works with urllib3 <2.x

.github/workflows/tests.yml

@@ -12,12 +12,15 @@ jobs:
           '3.11',
           '3.12',
         ]
-    name: Python ${{ matrix.python-version }}
+        include:
+          - python-version: '3.9'
+            pip-group: 'urllib3_1'
+    name: Python ${{ matrix.python-version }} ${{ matrix.pip-group }}
     steps:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
         architecture: x64
-    - run: make test
+    - run: make test PIP_GROUP='${{ matrix.pip-group }}'
     - run: make lint

Makefile

@@ -1,7 +1,11 @@
 venv: pyproject.toml poetry.lock venv-tools
 	rm -rf venv
 	python3 -m venv venv
+ifneq (${PIP_GROUP},)
+	VIRTUAL_ENV=venv venv-tools/bin/poetry install --with ${PIP_GROUP}
+else
 	VIRTUAL_ENV=venv venv-tools/bin/poetry install
+endif
 
 venv-tools: requirements.tools.txt
 	rm -rf venv-tools

flareio/api_client.py

@@ -47,18 +47,23 @@ def _create_session() -> requests.Session:
             ),
         )
 
+        retry = Retry(
+            total=5,
+            backoff_factor=2,
+            status_forcelist=[429, 502, 503, 504],
+            allowed_methods={"GET", "POST"},
+        )
+
+        # Support for urllib3 < 2.X
+        if hasattr(Retry, "backoff_max"):
+            retry.backoff_max = 15
+
+        retry.backoff_max = 15
+
         # Enable retries
         session.mount(
             "https://",
-            HTTPAdapter(
-                max_retries=Retry(
-                    total=5,
-                    backoff_factor=2,
-                    status_forcelist=[429, 502, 503, 504],
-                    allowed_methods={"GET", "POST"},
-                    backoff_max=15,
-                )
-            ),
+            HTTPAdapter(max_retries=retry),
         )
 
         return session

pyproject.toml

@@ -39,6 +39,10 @@ build-backend = "poetry.core.masonry.api"
 [tool.poetry.group.dev.dependencies]
 pytest = "8.3.2"
 
+[tool.poetry.group.urllib3_1.dependencies]
+urllib3 = "<2"
+requests = "<=2.30"
+
 [tool.ruff.lint]
 extend-select = [
     "I",