Changed code to support older Python versions

venv/lib/python3.11/site-packages/sentry_sdk/_werkzeug.py

@@ -0,0 +1,98 @@
+"""
+Copyright (c) 2007 by the Pallets team.
+
+Some rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+* Redistributions of source code must retain the above copyright notice,
+  this list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE AND DOCUMENTATION IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE AND DOCUMENTATION, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+"""
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing import Dict
+    from typing import Iterator
+    from typing import Tuple
+
+
+#
+# `get_headers` comes from `werkzeug.datastructures.EnvironHeaders`
+# https://github.com/pallets/werkzeug/blob/0.14.1/werkzeug/datastructures.py#L1361
+#
+# We need this function because Django does not give us a "pure" http header
+# dict. So we might as well use it for all WSGI integrations.
+#
+def _get_headers(environ):
+    # type: (Dict[str, str]) -> Iterator[Tuple[str, str]]
+    """
+    Returns only proper HTTP headers.
+    """
+    for key, value in environ.items():
+        key = str(key)
+        if key.startswith("HTTP_") and key not in (
+            "HTTP_CONTENT_TYPE",
+            "HTTP_CONTENT_LENGTH",
+        ):
+            yield key[5:].replace("_", "-").title(), value
+        elif key in ("CONTENT_TYPE", "CONTENT_LENGTH"):
+            yield key.replace("_", "-").title(), value
+
+
+#
+# `get_host` comes from `werkzeug.wsgi.get_host`
+# https://github.com/pallets/werkzeug/blob/1.0.1/src/werkzeug/wsgi.py#L145
+#
+def get_host(environ, use_x_forwarded_for=False):
+    # type: (Dict[str, str], bool) -> str
+    """
+    Return the host for the given WSGI environment.
+    """
+    if use_x_forwarded_for and "HTTP_X_FORWARDED_HOST" in environ:
+        rv = environ["HTTP_X_FORWARDED_HOST"]
+        if environ["wsgi.url_scheme"] == "http" and rv.endswith(":80"):
+            rv = rv[:-3]
+        elif environ["wsgi.url_scheme"] == "https" and rv.endswith(":443"):
+            rv = rv[:-4]
+    elif environ.get("HTTP_HOST"):
+        rv = environ["HTTP_HOST"]
+        if environ["wsgi.url_scheme"] == "http" and rv.endswith(":80"):
+            rv = rv[:-3]
+        elif environ["wsgi.url_scheme"] == "https" and rv.endswith(":443"):
+            rv = rv[:-4]
+    elif environ.get("SERVER_NAME"):
+        rv = environ["SERVER_NAME"]
+        if (environ["wsgi.url_scheme"], environ["SERVER_PORT"]) not in (
+            ("https", "443"),
+            ("http", "80"),
+        ):
+            rv += ":" + environ["SERVER_PORT"]
+    else:
+        # In spite of the WSGI spec, SERVER_NAME might not be present.
+        rv = "unknown"
+
+    return rv