From d8df095d1c44cfb603fdff2f8c49ca1f97bc7a02 Mon Sep 17 00:00:00 2001
From: David Tan <davidtgq@gmail.com>
Date: Thu, 19 Oct 2017 19:09:53 -0400
Subject: [PATCH] Revert "Replaced COMMON_STATUS_CODES with a simple 200 check
 for more fast"

This reverts commit 15b6980
---
 sanic/exceptions.py |  5 +++--
 sanic/response.py   | 26 +++++++++++++++++---------
 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/sanic/exceptions.py b/sanic/exceptions.py
index aa1e0d4d..e2d808f7 100644
--- a/sanic/exceptions.py
+++ b/sanic/exceptions.py
@@ -1,4 +1,4 @@
-from sanic.response import STATUS_CODES
+from sanic.response import ALL_STATUS_CODES, COMMON_STATUS_CODES
 
 TRACEBACK_STYLE = '''
     <style>
@@ -275,7 +275,8 @@ def abort(status_code, message=None):
                     in response.py for the given status code.
     """
     if message is None:
-        message = STATUS_CODES.get(status_code)
+        message = COMMON_STATUS_CODES.get(status_code,
+                                          ALL_STATUS_CODES.get(status_code))
         # These are stored as bytes in the STATUS_CODES dict
         message = message.decode('utf8')
     sanic_exception = _sanic_exceptions.get(status_code, SanicException)
diff --git a/sanic/response.py b/sanic/response.py
index 86f50038..582e11cf 100644
--- a/sanic/response.py
+++ b/sanic/response.py
@@ -10,7 +10,13 @@ from aiofiles import open as open_async
 
 from sanic.cookies import CookieJar
 
-STATUS_CODES = {
+COMMON_STATUS_CODES = {
+    200: b'OK',
+    400: b'Bad Request',
+    404: b'Not Found',
+    500: b'Internal Server Error',
+}
+ALL_STATUS_CODES = {
     100: b'Continue',
     101: b'Switching Protocols',
     102: b'Processing',
@@ -156,10 +162,11 @@ class StreamingHTTPResponse(BaseHTTPResponse):
 
         headers = self._parse_headers()
 
-        if self.status is 200:
-            status = b'OK'
-        else:
-            status = STATUS_CODES.get(self.status)
+        # Try to pull from the common codes first
+        # Speeds up response rate 6% over pulling from all
+        status = COMMON_STATUS_CODES.get(self.status)
+        if not status:
+            status = ALL_STATUS_CODES.get(self.status)
 
         return (b'HTTP/%b %d %b\r\n'
                 b'%b'
@@ -202,10 +209,11 @@ class HTTPResponse(BaseHTTPResponse):
 
         headers = self._parse_headers()
 
-        if self.status is 200:
-            status = b'OK'
-        else:
-            status = STATUS_CODES.get(self.status, b'UNKNOWN RESPONSE')
+        # Try to pull from the common codes first
+        # Speeds up response rate 6% over pulling from all
+        status = COMMON_STATUS_CODES.get(self.status)
+        if not status:
+            status = ALL_STATUS_CODES.get(self.status, b'UNKNOWN RESPONSE')
 
         return (b'HTTP/%b %d %b\r\n'
                 b'Connection: %b\r\n'