fix 2gb+ file uploads

Telegram/SourceFiles/storage/file_upload.cpp

@@ -31,20 +31,20 @@ constexpr auto kMaxUploadPerSession = 1024 * 1024;
 
 constexpr auto kDocumentMaxPartsCountDefault = 4000;
 
-// 64kb for tiny document ( < 1mb )
-constexpr auto kDocumentUploadPartSize0 = 64 * 1024;
+// 32kb for tiny document ( < 1mb )
+constexpr auto kDocumentUploadPartSize0 = 32 * 1024;
 
-// 128kb for little document ( <= 32mb )
-constexpr auto kDocumentUploadPartSize1 = 128 * 1024;
+// 64kb for little document ( <= 32mb )
+constexpr auto kDocumentUploadPartSize1 = 64 * 1024;
 
-// 256kb for small document ( <= 375mb )
-constexpr auto kDocumentUploadPartSize2 = 256 * 1024;
+// 128kb for small document ( <= 375mb )
+constexpr auto kDocumentUploadPartSize2 = 128 * 1024;
 
-// 512kb for medium document ( <= 750mb )
-constexpr auto kDocumentUploadPartSize3 = 512 * 1024;
+// 256kb for medium document ( <= 750mb )
+constexpr auto kDocumentUploadPartSize3 = 256 * 1024;
 
-// 1024kb for large document ( <= 1500mb )
-constexpr auto kDocumentUploadPartSize4 = 1024 * 1024;
+// 512kb for large document ( <= 1500mb )
+constexpr auto kDocumentUploadPartSize4 = 512 * 1024;
 
 // How much time without upload causes additional session kill.
 constexpr auto kKillSessionTimeout = 15 * crl::time(1000);