[Bug #792570] Under Windows, socket.read() seems to run into trouble when

asked to read tens of megabytes of data.  On my Mac, it hits MemoryErrors
when reading around 15Mb in one chunk.  The fix is to read the body in several
parts, not as one big piece.

It would be nice to fix the underlying socket.read() problem, too.

2.4 bugfix candidate.

1 files changed, 13 insertions, 2 deletions

diff --git a/Lib/SimpleXMLRPCServer.py b/Lib/SimpleXMLRPCServer.py
index ae06bda354..f9999f6d8c 100644
--- a/Lib/SimpleXMLRPCServer.py
+++ b/Lib/SimpleXMLRPCServer.py
@@ -422,8 +422,19 @@ class SimpleXMLRPCRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
         """
 
         try:
-            # get arguments
-            data = self.rfile.read(int(self.headers["content-length"]))
+            # Get arguments by reading body of request. 
+            # We read this in chunks to avoid straining 
+            # socket.read(); around the 10 or 15Mb mark, some platforms
+            # begin to have problems (bug #792570).
+            max_chunk_size = 10*1024*1024
+            size_remaining = int(self.headers["content-length"])
+            L = []
+            while size_remaining:
+                chunk_size = min(size_remaining, max_chunk_size)
+                L.append(self.rfile.read(chunk_size))
+                size_remaining -= len(L[-1])
+            data = ''.join(L)
+
             # In previous versions of SimpleXMLRPCServer, _dispatch
             # could be overridden in this class, instead of in
             # SimpleXMLRPCDispatcher. To maintain backwards compatibility,