Remove incorrect handling of escaped quotes in cookie values

AUTHORS.rst

@@ -129,7 +129,6 @@ Patches and Suggestions
 - Dave Shawley <[email protected]>
 - James Clarke (`@jam <https://github.com/jam>`_)
 - Kevin Burke <[email protected]>
-- Flavio Curella
 - David Pursehouse <[email protected]> (`@dpursehouse <https://github.com/dpursehouse>`_)
 - Jon Parise (`@jparise <https://github.com/jparise>`_)
 - Alexander Karpinsky (`@homm86 <https://twitter.com/homm86>`_)
@@ -193,3 +192,4 @@ Patches and Suggestions
 - Sylvain Marié (`@smarie <https://github.com/smarie>`_)
 - Hod Bin Noon (`@hodbn <https://github.com/hodbn>`_)
 - Mike Fiedler (`@miketheman <https://github.com/miketheman>`_)
+- Linkai Zheng (`@Konano <https://github.com/Konano>`_)

src/requests/cookies.py

@@ -346,15 +346,6 @@ def __delitem__(self, name):
         """
         remove_cookie_by_name(self, name)
 
-    def set_cookie(self, cookie, *args, **kwargs):
-        if (
-            hasattr(cookie.value, "startswith")
-            and cookie.value.startswith('"')
-            and cookie.value.endswith('"')
-        ):
-            cookie.value = cookie.value.replace('\\"', "")
-        return super().set_cookie(cookie, *args, **kwargs)
-
     def update(self, other):
         """Updates this jar with cookies from another CookieJar or dict-like"""
         if isinstance(other, cookielib.CookieJar):

tests/test_requests.py

@@ -394,8 +394,23 @@ def test_cookie_removed_on_expire(self, httpbin):
 
     def test_cookie_quote_wrapped(self, httpbin):
         s = requests.session()
-        s.get(httpbin('cookies/set?foo="bar:baz"'))
-        assert s.cookies["foo"] == '"bar:baz"'
+        r = s.get(httpbin('cookies/set?foo="bar:baz"'))
+        assert s.cookies["foo"] == '"\\"bar:baz\\""'
+        assert r.request.headers["Cookie"] == 'foo="\\"bar:baz\\""'
+        assert r.json()["cookies"]["foo"] == '"bar:baz"'
+
+    def test_cookie_with_json_value(self, httpbin):
+        s = requests.session()
+        r = s.get(httpbin('cookies/set?foo={"bar":"baz"}'))
+        assert s.cookies["foo"] == '"{\\"bar\\":\\"baz\\"}"'
+        assert r.request.headers["Cookie"] == 'foo="{\\"bar\\":\\"baz\\"}"'
+        assert r.json()["cookies"]["foo"] == '{"bar":"baz"}'
+
+    def test_param_cookies_with_json_value(self, httpbin):
+        s = requests.session()
+        r = s.get(httpbin("cookies"), cookies={"foo": '"{\\"bar\\":\\"baz\\"}"'})
+        assert r.request.headers["Cookie"] == 'foo="{\\"bar\\":\\"baz\\"}"'
+        assert r.json()["cookies"]["foo"] == '{"bar":"baz"}'
 
     def test_cookie_persists_via_api(self, httpbin):
         s = requests.session()