only try to parse payload hash if header exists (#163)

* only try to parse payload hash if header exists
* changelog

1 files changed, 8 insertions, 1 deletions

diff --git a/zenserver/upstream/jupiter.cpp b/zenserver/upstream/jupiter.cpp
index b82290f3d..260b83355 100644
--- a/zenserver/upstream/jupiter.cpp
+++ b/zenserver/upstream/jupiter.cpp
@@ -209,7 +209,14 @@ CloudCacheSession::GetInlineBlob(std::string_view Namespace, std::string_view Bu
 
 	const bool	   Success = Response.status_code == 200;
 	const IoBuffer Buffer  = Success ? IoBufferBuilder::MakeCloneFromMemory(Response.text.data(), Response.text.size()) : IoBuffer();
-	OutPayloadHash		   = IoHash::FromHexString(Response.header["X-Jupiter-InlinePayloadHash"]);
+	if (auto It = Response.header.find("X-Jupiter-InlinePayloadHash"); It != Response.header.end())
+	{
+		const std::string& PayloadHashHeader = It->second;
+		if (PayloadHashHeader.length() == IoHash::StringLength)
+		{
+			OutPayloadHash = IoHash::FromHexString(PayloadHashHeader);
+		}
+	}
 
 	return {.Response = Buffer, .Bytes = Response.downloaded_bytes, .ElapsedSeconds = Response.elapsed, .Success = Success};
 }