[Python-checkins] bpo-16594: Add allow_reuse_port on socketserver (GH-30072)

[asvetlov]

https://github.com/python/cpython/commit/b56774bd93822e1598bb5d6c1d0b1fe8c45a750d
commit: b56774bd93822e1598bb5d6c1d0b1fe8c45a750d
branch: main
author: AN Long <aisk at users.noreply.github.com>
committer: asvetlov <andrew.svetlov at gmail.com>
date: 2021-12-13T14:14:17+02:00
summary:

bpo-16594: Add allow_reuse_port on socketserver (GH-30072)

* bpo-16594: Add allow_reuse_port on socketserver

* 📜🤖 Added by blurb_it.

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>

files:
A Misc/NEWS.d/next/Library/2021-12-12-13-41-47.bpo-16594.yfC7L4.rst
M Lib/socketserver.py

diff --git a/Lib/socketserver.py b/Lib/socketserver.py
index 0d9583d56a4d7..5e070bc3912af 100644
--- a/Lib/socketserver.py
+++ b/Lib/socketserver.py
@@ -187,6 +187,7 @@ class BaseServer:
     - address_family
     - socket_type
     - allow_reuse_address
+    - allow_reuse_port
 
     Instance variables:
 
@@ -425,6 +426,7 @@ class TCPServer(BaseServer):
     - socket_type
     - request_queue_size (only for stream sockets)
     - allow_reuse_address
+    - allow_reuse_port
 
     Instance variables:
 
@@ -442,6 +444,8 @@ class TCPServer(BaseServer):
 
     allow_reuse_address = False
 
+    allow_reuse_port = False
+
     def __init__(self, server_address, RequestHandlerClass, bind_and_activate=True):
         """Constructor.  May be extended, do not override."""
         BaseServer.__init__(self, server_address, RequestHandlerClass)
@@ -463,6 +467,8 @@ def server_bind(self):
         """
         if self.allow_reuse_address:
             self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        if self.allow_reuse_port:
+            self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1)
         self.socket.bind(self.server_address)
         self.server_address = self.socket.getsockname()
 
@@ -519,6 +525,8 @@ class UDPServer(TCPServer):
 
     allow_reuse_address = False
 
+    allow_reuse_port = False
+
     socket_type = socket.SOCK_DGRAM
 
     max_packet_size = 8192
diff --git a/Misc/NEWS.d/next/Library/2021-12-12-13-41-47.bpo-16594.yfC7L4.rst b/Misc/NEWS.d/next/Library/2021-12-12-13-41-47.bpo-16594.yfC7L4.rst
new file mode 100644
index 0000000000000..a977a6b21dd64
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2021-12-12-13-41-47.bpo-16594.yfC7L4.rst
@@ -0,0 +1 @@
+Add allow allow_reuse_port flag in socketserver.
\ No newline at end of file