linux 6.1 fixed the 6.0 bugs; remove workarounds

copyparty/httpsrv.py

@@ -2,7 +2,6 @@
 from __future__ import print_function, unicode_literals
 
 import base64
-import errno
 import math
 import os
 import socket
@@ -287,16 +286,6 @@ class HttpSrv(object):
                 if self.stopping:
                     break
 
-                if (
-                    ex.errno == errno.EINVAL
-                    and ip == "0.0.0.0"
-                    and ("::", port) in self.bound
-                ):
-                    t = "accept({}): {} -- probably due to dualstack; terminating ({}, {})"
-                    self.log(self.name, t.format(fno, ex, ip, port), c=6)
-                    srv_sck.close()
-                    return
-
                 self.log(self.name, "accept({}): {}".format(fno, ex), c=6)
                 time.sleep(0.02)
                 continue

copyparty/tcpsrv.py

@@ -1,7 +1,6 @@
 # coding: utf-8
 from __future__ import print_function, unicode_literals
 
-import errno
 import os
 import re
 import socket
@@ -224,11 +223,6 @@ class TcpSrv(object):
 
         try:
             srv.bind((ip, port))
-            sport = srv.getsockname()[1]
-            if port != sport:
-                # linux 6.0.16 lets you bind a port which is in use
-                # except it just gives you a random port instead
-                raise OSError(errno.EADDRINUSE, "")
             self.srv.append(srv)
         except (OSError, socket.error) as ex:
             if ex.errno in E_ADDR_IN_USE: