Set blocking I/O flags for FreeBSD

click/_compat.py

@@ -165,11 +165,12 @@ def is_bytes(x):
     # available (which is why we use try-catch instead of the WIN variable
     # here), such as the Google App Engine development server on Windows. In
     # those cases there is just nothing we can do.
+    def set_binary_mode(f):
+        return f
+
     try:
         import msvcrt
-    except ImportError:
-        set_binary_mode = lambda x: x
-    else:
+
         def set_binary_mode(f):
             try:
                 fileno = f.fileno()
@@ -178,6 +179,23 @@ def set_binary_mode(f):
             else:
                 msvcrt.setmode(fileno, os.O_BINARY)
             return f
+    except ImportError:
+        pass
+
+    try:
+        import fcntl
+
+        def set_binary_mode(f):
+            try:
+                fileno = f.fileno()
+            except Exception:
+                pass
+            else:
+                flags = fcntl.fcntl(fileno, fcntl.F_GETFL)
+                fcntl.fcntl(fileno, fcntl.F_SETFL, flags & ~os.O_NONBLOCK)
+            return f
+    except ImportError:
+        pass
 
     def isidentifier(x):
         return _identifier_re.search(x) is not None