--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/urllib3/_request_methods.py	Sun May 05 23:32:17 2024 -0400
@@ -0,0 +1,279 @@
+from __future__ import annotations
+
+import json as _json
+import typing
+from urllib.parse import urlencode
+
+from ._base_connection import _TYPE_BODY
+from ._collections import HTTPHeaderDict
+from .filepost import _TYPE_FIELDS, encode_multipart_formdata
+from .response import BaseHTTPResponse
+
+__all__ = ["RequestMethods"]
+
+_TYPE_ENCODE_URL_FIELDS = typing.Union[
+    typing.Sequence[typing.Tuple[str, typing.Union[str, bytes]]],
+    typing.Mapping[str, typing.Union[str, bytes]],
+]
+
+
+class RequestMethods:
+    """
+    Convenience mixin for classes who implement a :meth:`urlopen` method, such
+    as :class:`urllib3.HTTPConnectionPool` and
+    :class:`urllib3.PoolManager`.
+
+    Provides behavior for making common types of HTTP request methods and
+    decides which type of request field encoding to use.
+
+    Specifically,
+
+    :meth:`.request_encode_url` is for sending requests whose fields are
+    encoded in the URL (such as GET, HEAD, DELETE).
+
+    :meth:`.request_encode_body` is for sending requests whose fields are
+    encoded in the *body* of the request using multipart or www-form-urlencoded
+    (such as for POST, PUT, PATCH).
+
+    :meth:`.request` is for making any kind of request, it will look up the
+    appropriate encoding format and use one of the above two methods to make
+    the request.
+
+    Initializer parameters:
+
+    :param headers:
+        Headers to include with all requests, unless other headers are given
+        explicitly.
+    """
+
+    _encode_url_methods = {"DELETE", "GET", "HEAD", "OPTIONS"}
+
+    def __init__(self, headers: typing.Mapping[str, str] | None = None) -> None:
+        self.headers = headers or {}
+
+    def urlopen(
+        self,
+        method: str,
+        url: str,
+        body: _TYPE_BODY | None = None,
+        headers: typing.Mapping[str, str] | None = None,
+        encode_multipart: bool = True,
+        multipart_boundary: str | None = None,
+        **kw: typing.Any,
+    ) -> BaseHTTPResponse:  # Abstract
+        raise NotImplementedError(
+            "Classes extending RequestMethods must implement "
+            "their own ``urlopen`` method."
+        )
+
+    def request(
+        self,
+        method: str,
+        url: str,
+        body: _TYPE_BODY | None = None,
+        fields: _TYPE_FIELDS | None = None,
+        headers: typing.Mapping[str, str] | None = None,
+        json: typing.Any | None = None,
+        **urlopen_kw: typing.Any,
+    ) -> BaseHTTPResponse:
+        """
+        Make a request using :meth:`urlopen` with the appropriate encoding of
+        ``fields`` based on the ``method`` used.
+
+        This is a convenience method that requires the least amount of manual
+        effort. It can be used in most situations, while still having the
+        option to drop down to more specific methods when necessary, such as
+        :meth:`request_encode_url`, :meth:`request_encode_body`,
+        or even the lowest level :meth:`urlopen`.
+
+        :param method:
+            HTTP request method (such as GET, POST, PUT, etc.)
+
+        :param url:
+            The URL to perform the request on.
+
+        :param body:
+            Data to send in the request body, either :class:`str`, :class:`bytes`,
+            an iterable of :class:`str`/:class:`bytes`, or a file-like object.
+
+        :param fields:
+            Data to encode and send in the request body.  Values are processed
+            by :func:`urllib.parse.urlencode`.
+
+        :param headers:
+            Dictionary of custom headers to send, such as User-Agent,
+            If-None-Match, etc. If None, pool headers are used. If provided,
+            these headers completely replace any pool-specific headers.
+
+        :param json:
+            Data to encode and send as JSON with UTF-encoded in the request body.
+            The ``"Content-Type"`` header will be set to ``"application/json"``
+            unless specified otherwise.
+        """
+        method = method.upper()
+
+        if json is not None and body is not None:
+            raise TypeError(
+                "request got values for both 'body' and 'json' parameters which are mutually exclusive"
+            )
+
+        if json is not None:
+            if headers is None:
+                headers = self.headers
+
+            if not ("content-type" in map(str.lower, headers.keys())):
+                headers = HTTPHeaderDict(headers)
+                headers["Content-Type"] = "application/json"
+
+            body = _json.dumps(json, separators=(",", ":"), ensure_ascii=False).encode(
+                "utf-8"
+            )
+
+        if body is not None:
+            urlopen_kw["body"] = body
+
+        if method in self._encode_url_methods:
+            return self.request_encode_url(
+                method,
+                url,
+                fields=fields,  # type: ignore[arg-type]
+                headers=headers,
+                **urlopen_kw,
+            )
+        else:
+            return self.request_encode_body(
+                method, url, fields=fields, headers=headers, **urlopen_kw
+            )
+
+    def request_encode_url(
+        self,
+        method: str,
+        url: str,
+        fields: _TYPE_ENCODE_URL_FIELDS | None = None,
+        headers: typing.Mapping[str, str] | None = None,
+        **urlopen_kw: str,
+    ) -> BaseHTTPResponse:
+        """
+        Make a request using :meth:`urlopen` with the ``fields`` encoded in
+        the url. This is useful for request methods like GET, HEAD, DELETE, etc.
+
+        :param method:
+            HTTP request method (such as GET, POST, PUT, etc.)
+
+        :param url:
+            The URL to perform the request on.
+
+        :param fields:
+            Data to encode and send in the request body.
+
+        :param headers:
+            Dictionary of custom headers to send, such as User-Agent,
+            If-None-Match, etc. If None, pool headers are used. If provided,
+            these headers completely replace any pool-specific headers.
+        """
+        if headers is None:
+            headers = self.headers
+
+        extra_kw: dict[str, typing.Any] = {"headers": headers}
+        extra_kw.update(urlopen_kw)
+
+        if fields:
+            url += "?" + urlencode(fields)
+
+        return self.urlopen(method, url, **extra_kw)
+
+    def request_encode_body(
+        self,
+        method: str,
+        url: str,
+        fields: _TYPE_FIELDS | None = None,
+        headers: typing.Mapping[str, str] | None = None,
+        encode_multipart: bool = True,
+        multipart_boundary: str | None = None,
+        **urlopen_kw: str,
+    ) -> BaseHTTPResponse:
+        """
+        Make a request using :meth:`urlopen` with the ``fields`` encoded in
+        the body. This is useful for request methods like POST, PUT, PATCH, etc.
+
+        When ``encode_multipart=True`` (default), then
+        :func:`urllib3.encode_multipart_formdata` is used to encode
+        the payload with the appropriate content type. Otherwise
+        :func:`urllib.parse.urlencode` is used with the
+        'application/x-www-form-urlencoded' content type.
+
+        Multipart encoding must be used when posting files, and it's reasonably
+        safe to use it in other times too. However, it may break request
+        signing, such as with OAuth.
+
+        Supports an optional ``fields`` parameter of key/value strings AND
+        key/filetuple. A filetuple is a (filename, data, MIME type) tuple where
+        the MIME type is optional. For example::
+
+            fields = {
+                'foo': 'bar',
+                'fakefile': ('foofile.txt', 'contents of foofile'),
+                'realfile': ('barfile.txt', open('realfile').read()),
+                'typedfile': ('bazfile.bin', open('bazfile').read(),
+                              'image/jpeg'),
+                'nonamefile': 'contents of nonamefile field',
+            }
+
+        When uploading a file, providing a filename (the first parameter of the
+        tuple) is optional but recommended to best mimic behavior of browsers.
+
+        Note that if ``headers`` are supplied, the 'Content-Type' header will
+        be overwritten because it depends on the dynamic random boundary string
+        which is used to compose the body of the request. The random boundary
+        string can be explicitly set with the ``multipart_boundary`` parameter.
+
+        :param method:
+            HTTP request method (such as GET, POST, PUT, etc.)
+
+        :param url:
+            The URL to perform the request on.
+
+        :param fields:
+            Data to encode and send in the request body.
+
+        :param headers:
+            Dictionary of custom headers to send, such as User-Agent,
+            If-None-Match, etc. If None, pool headers are used. If provided,
+            these headers completely replace any pool-specific headers.
+
+        :param encode_multipart:
+            If True, encode the ``fields`` using the multipart/form-data MIME
+            format.
+
+        :param multipart_boundary:
+            If not specified, then a random boundary will be generated using
+            :func:`urllib3.filepost.choose_boundary`.
+        """
+        if headers is None:
+            headers = self.headers
+
+        extra_kw: dict[str, typing.Any] = {"headers": HTTPHeaderDict(headers)}
+        body: bytes | str
+
+        if fields:
+            if "body" in urlopen_kw:
+                raise TypeError(
+                    "request got values for both 'fields' and 'body', can only specify one."
+                )
+
+            if encode_multipart:
+                body, content_type = encode_multipart_formdata(
+                    fields, boundary=multipart_boundary
+                )
+            else:
+                body, content_type = (
+                    urlencode(fields),  # type: ignore[arg-type]
+                    "application/x-www-form-urlencoded",
+                )
+
+            extra_kw["body"] = body
+            extra_kw["headers"].setdefault("Content-Type", content_type)
+
+        extra_kw.update(urlopen_kw)
+
+        return self.urlopen(method, url, **extra_kw)