internal static string GetMessageIdHash(this HeaderList headerCollection)
{
var messageIdHeaderEntry = headerCollection["Message-ID"];
if (string.IsNullOrEmpty(messageIdHeaderEntry))
{
messageIdHeaderEntry = headerCollection.ToHMSGID();
return(messageIdHeaderEntry);
}
var threadIndex = headerCollection["Thread-Index"];
if (threadIndex is not null)
{
messageIdHeaderEntry = $"{threadIndex}|{messageIdHeaderEntry}";
if (messageIdHeaderEntry.Length > 255)
{
messageIdHeaderEntry = headerCollection.ToHMSGID();
}
}
messageIdHeaderEntry = messageIdHeaderEntry.ToNMSGID();
return(messageIdHeaderEntry);
}
internal static string GetMessageId(this HeaderList headerCollection)
{
var messageIdHeaderEntry = headerCollection["Message-ID"];
if (string.IsNullOrEmpty(messageIdHeaderEntry))
{
messageIdHeaderEntry = headerCollection.ToHMSGID();
return(messageIdHeaderEntry);
}
return(messageIdHeaderEntry);
}