Fix FOV floating point bugs by using fractions.Fraction for fractions.

[plomrogue2-experiments] / plom_socket_io.py

diff --git a/plom_socket_io.py b/plom_socket_io.py
index 07d41ce8bd909bb5e53fd23c829e0b1f7685239f..ebde3c18f5f37af6beeef0ff025593d106ddc1bc 100644 (file)
--- a/plom_socket_io.py
+++ b/plom_socket_io.py
@@ -1,3 +1,7 @@
+class BrokenSocketConnection(Exception):
+    pass
+
+
 def send(socket, message):
     """Send message via socket, encoded and delimited the way recv() expects.
 
@@ -26,9 +30,17 @@ def send(socket, message):
     data = escaped_message.encode()
     totalsent = 0
     while totalsent < len(data):
-        sent = socket.send(data[totalsent:])
-        if sent == 0:
-            raise RuntimeError('socket connection broken')
+        socket_broken = False
+        try:
+            sent = socket.send(data[totalsent:])
+            socket_broken = sent == 0
+        except OSError as err:
+            if err.errno == 9:  # "Bad file descriptor", when connection broken
+                socket_broken = True
+            else:
+                raise err
+        if socket_broken:
+            raise BrokenSocketConnection
         totalsent = totalsent + sent
 
 
@@ -48,7 +60,6 @@ def recv(socket):
     meaningful way; that's why we do our own message segmentation with $ as a
     delimiter.
     """
-    quit = False
     esc = False
     data = b''
     msg = b''