1 files changed, 50 insertions, 0 deletions
diff --git a/src/M2Crypto/SSL/timeout.py b/src/M2Crypto/SSL/timeout.py
new file mode 100644
index 0000000..42b0291
--- /dev/null
+++ b/src/M2Crypto/SSL/timeout.py
@@ -0,0 +1,50 @@
+"""Support for SSL socket timeouts.
+
+Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved.
+
+Copyright 2008 Heikki Toivonen. All rights reserved.
+"""
+
+__all__ = ['DEFAULT_TIMEOUT', 'timeout', 'struct_to_timeout', 'struct_size']
+
+import sys
+import struct
+
+DEFAULT_TIMEOUT = 600  # type: int
+
+
+class timeout(object):
+
+    def __init__(self, sec=DEFAULT_TIMEOUT, microsec=0):
+        # type: (int, int) -> None
+        self.sec = sec
+        self.microsec = microsec
+
+    def pack(self):
+        if sys.platform == 'win32':
+            millisec = int(self.sec * 1000 + round(float(self.microsec) / 1000))
+            binstr = struct.pack('l', millisec)
+        else:
+            binstr = struct.pack('ll', self.sec, self.microsec)
+        return binstr
+
+
+def struct_to_timeout(binstr):
+    # type: (bytes) -> timeout
+    if sys.platform == 'win32':
+        millisec = struct.unpack('l', binstr)[0]
+        # On py3, int/int performs exact division and returns float. We want
+        # the whole number portion of the exact division result:
+        sec = int(millisec / 1000)
+        microsec = (millisec % 1000) * 1000
+    else:
+        (sec, microsec) = struct.unpack('ll', binstr)
+    return timeout(sec, microsec)
+
+
+def struct_size():
+    # type: () -> int
+    if sys.platform == 'win32':
+        return struct.calcsize('l')
+    else:
+        return struct.calcsize('ll')