Using O_BINARY on win32 for uploaded files

examples/Makefile

@@ -17,6 +17,7 @@ CLFLAGS = /MD /TC /nologo $(DBG) /W3 /DNO_SSL \
         /link /incremental:no /libpath:$(MSVC)/lib /machine:IX86
 
 windows:
+	$(CL) upload.c ../mongoose.c $(CLFLAGS)
 	$(CL) hello.c ../mongoose.c $(CLFLAGS)
 	$(CL) upload.c ../mongoose.c $(CLFLAGS)
 	$(CL) post.c ../mongoose.c $(CLFLAGS)

examples/upload.c

@@ -15,6 +15,9 @@ typedef __int64 int64_t;
 #else
 #include <inttypes.h>
 #include <unistd.h>
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
 #endif // !_WIN32
 
 #include "mongoose.h"
@@ -82,7 +85,7 @@ static void handle_file_upload(struct mg_connection *conn) {
     mg_printf(conn, "%s%s", HTTP_500, "Can't get file name");
   } else if (cl <= 0) {
     mg_printf(conn, "%s%s", HTTP_500, "Empty file");
-  } else if ((fd = open(path, O_CREAT | O_TRUNC |
+  } else if ((fd = open(path, O_CREAT | O_TRUNC | O_BINARY |
                         O_WRONLY | O_EXLOCK | O_CLOEXEC)) < 0) {
     // We're opening the file with exclusive lock held. This guarantee us that
     // there is no other thread can save into the same file simultaneously.