Use wxSOCKET_WAITALL in wxHTTP to ensure that all data is sent.

POST-ing sufficiently big amounts of data in wxHTTP didn't work because it
couldn't be sent all at once to the server. Use wxSOCKET_WAITALL to ensure
that we do send all of the data.

Closes #14598.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72409 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -531,6 +531,7 @@ All:
 
 - Add wxDir::Close() method (Silverstorm82).
 - Fix compilation of wxHash{Map,Set} with g++ 4.7 (Nathan Ridge).
+- Fix posting large amounts of data in wxHTTP (Platonides).
 - Added Nepali translation (Him Prasad Gautam).
 
 All (GUI):

src/common/http.cpp

@@ -388,8 +388,11 @@ bool wxHTTP::BuildRequest(const wxString& path, wxHTTP_Req req)
     SaveState();
 
     // we may use non blocking sockets only if we can dispatch events from them
-    SetFlags( wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
-                                                             : wxSOCKET_BLOCK );
+    int flags = wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
+                                                               : wxSOCKET_BLOCK;
+    // and we must use wxSOCKET_WAITALL to ensure that all data is sent
+    flags |= wxSOCKET_WAITALL;
+    SetFlags(flags);
     Notify(false);
 
     wxString buf;