From f4ef74c6eacbc7fc2d557e4b3b12c9e7b7680dc8 Mon Sep 17 00:00:00 2001
From: George Hazan <george.hazan@gmail.com>
Date: Thu, 8 May 2025 14:28:21 +0300
Subject: =?UTF-8?q?fixes=20#5014=20(Telegram:=20"=D0=B7=D0=B0=D1=81=D1=82?=
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 =?UTF-8?q?=D1=80=D0=B0=D0=B2=D0=BA=D0=B0=20=D1=84=D0=B0=D0=B9=D0=BB=D0=BE?=
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---
 protocols/Telegram/src/proto.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'protocols/Telegram/src/proto.cpp')

diff --git a/protocols/Telegram/src/proto.cpp b/protocols/Telegram/src/proto.cpp
index 6e59c6c983..a420a65122 100644
--- a/protocols/Telegram/src/proto.cpp
+++ b/protocols/Telegram/src/proto.cpp
@@ -462,6 +462,15 @@ void CTelegramProto::ProcessFileMessage(TG_FILE_REQUEST *ft, const TD::message *
 			return;
 		}
 
+		// if that file was sent once, it might be cached at the server & reused
+		if (auto *pRemote = pFile->remote_.get()) {
+			if (pRemote->is_uploading_completed_) {
+				ProtoBroadcastAck(ft->m_hContact, ACKTYPE_FILE, ACKRESULT_SUCCESS, ft);
+				delete ft;
+				return;
+			}
+		}
+
 		char szUserId[100];
 		auto szMsgId(msg2id(pMsg));
 
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