Don't limit read_len to max_recv_size

Author: alexforencich

vxi11/vxi11.py

@@ -572,6 +572,7 @@ def __init__(self, host, name = None, client_id = None, term_char = None):
         self.abort_port = 0
         self.link = None
         self.max_recv_size = 0
+        self.max_read_len = 128*1024*1024
         self.locked = False
 
     def __del__(self):
@@ -691,9 +692,9 @@ def read_raw(self, num=-1):
         if self.link is None:
             self.open()
 
-        read_len = self.max_recv_size
-        if num > 0 and num < self.max_recv_size:
-            read_len = num
+        read_len = self.max_read_len
+        if num > 0:
+            read_len = min(num, self.max_read_len)
 
         flags = 0
         reason = 0