Fixed DH rate testing on Windows. (#261)

README.md

@@ -230,6 +230,7 @@ For convenience, a web front-end on top of the command-line tool is available at
  - Fixed host key tests from only reporting a key type at most once despite multiple hosts supporting it; credit [Daniel Lenski](https://github.com/dlenskiSB).
  - Fixed DHEat connection rate testing on MacOS X and BSD platforms; credit [Drew Noel](https://github.com/drewmnoel) and [Michael Osipov](https://github.com/michael-o).
  - Fixed invalid JSON output when a socket error occurs while performing a client audit.
+ - Fixed `--conn-rate-test` feature on Windows.
  - When scanning multiple targets (using `-T`/`--targets`), the `-p`/`--port` option will now be used as the default port (set to 22 if `-p`/`--port` is not given).  Hosts specified in the file can override this default with an explicit port number (i.e.: "host1:1234").  For example, when using `-T targets.txt -p 222`, all hosts in `targets.txt` that do not explicitly include a port number will default to 222; when using `-T targets.txt` (without `-p`), all hosts will use a default of 22.
  - Now reports ECDSA and DSS fingerprints when in verbose mode; partial credit [Daniel Lenski](https://github.com/dlenskiSB).
  - Added 1 new cipher: `grasshopper-ctr128`.

src/ssh_audit/dheat.py

@@ -324,12 +324,6 @@ def _close_socket(socket_dict: Dict[socket.socket, float], s: socket.socket) ->
 
             del socket_dict[s]
 
-        if sys.platform == "win32":
-            DHEat.YELLOWB = "\033[1;93m"
-            DHEat.CLEAR = "\033[0m"
-            print("\n%sUnfortunately, this feature is not currently functional under Windows.%s  This should get fixed in a future release.  See: <https://github.com/jtesta/ssh-audit/issues/261>" % (DHEat.YELLOWB, DHEat.CLEAR))
-            return ""
-
         # Resolve the target into an IP address
         out.d("Resolving target %s..." % aconf.host)
         target_address_family, target_ip_address = DHEat._resolve_hostname(aconf.host, aconf.ip_version_preference)
@@ -443,7 +437,7 @@ def _close_socket(socket_dict: Dict[socket.socket, float], s: socket.socket) ->
                 # out.d("Creating socket (%u of %u already exist)..." % (len(socket_dict), concurrent_sockets), write_now=True)
                 ret = s.connect_ex((target_ip_address, aconf.port))
                 num_attempted_connections += 1
-                if ret in [0, errno.EINPROGRESS]:
+                if ret in [0, errno.EINPROGRESS, errno.EWOULDBLOCK]:
                     socket_dict[s] = now
                 else:
                     out.d("connect_ex() returned: %s (%d)" % (os.strerror(ret), ret), write_now=True)