sshuttle-1.0.1-no-attribute-set_blocking.patch

diff -r -U3 sshuttle-1.0.1.orig/sshuttle/ssnet.py sshuttle-1.0.1/sshuttle/ssnet.py
--- sshuttle-1.0.1.orig/sshuttle/ssnet.py	2020-06-05 00:43:00.000000000 +0300
+++ sshuttle-1.0.1/sshuttle/ssnet.py	2020-07-01 12:15:35.206952388 +0300
@@ -439,7 +439,8 @@
                 callback(cmd, data)
 
     def flush(self):
-        os.set_blocking(self.wfile.fileno(), False)
+        if 'set_blocking' in dir(os):
+            os.set_blocking(self.wfile.fileno(), False)
         if self.outbuf and self.outbuf[0]:
             wrote = _nb_clean(os.write, self.wfile.fileno(), self.outbuf[0])
             debug2('mux wrote: %r/%d\n' % (wrote, len(self.outbuf[0])))
@@ -449,7 +450,8 @@
             self.outbuf[0:1] = []
 
     def fill(self):
-        os.set_blocking(self.rfile.fileno(), False)
+        if 'set_blocking' in dir(os):
+            os.set_blocking(self.rfile.fileno(), False)
         try:
             read = _nb_clean(os.read, self.rfile.fileno(), LATENCY_BUFFER_SIZE)
         except OSError: