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fix #1290. copy correct size if message didn't fit previous

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orignal 2019-01-31 16:03:10 -05:00
parent d848ae332a
commit bc3f02cb6b
1 changed files with 13 additions and 12 deletions
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25
libi2pd/TunnelGateway.cpp
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@ -51,6 +51,19 @@ namespace tunnel
// create fragments
const std::shared_ptr<I2NPMessage> & msg = block.data;
size_t fullMsgLen = diLen + msg->GetLength () + 2; // delivery instructions + payload + 2 bytes length
if (!messageCreated && fullMsgLen > m_RemainingSize) // check if we should complete previous message
{
size_t numFollowOnFragments = fullMsgLen / TUNNEL_DATA_MAX_PAYLOAD_SIZE;
// length of bytes doesn't fit full tunnel message
// every follow-on fragment adds 7 bytes
size_t nonFit = (fullMsgLen + numFollowOnFragments*7) % TUNNEL_DATA_MAX_PAYLOAD_SIZE;
if (!nonFit || nonFit > m_RemainingSize)
{
CompleteCurrentTunnelDataMessage ();
CreateCurrentTunnelDataMessage ();
}
}
if (fullMsgLen <= m_RemainingSize)
{
// message fits. First and last fragment
@ -65,18 +78,6 @@ namespace tunnel
}
else
{
if (!messageCreated) // check if we should complete previous message
{
size_t numFollowOnFragments = fullMsgLen / TUNNEL_DATA_MAX_PAYLOAD_SIZE;
// length of bytes don't fit full tunnel message
// every follow-on fragment adds 7 bytes
size_t nonFit = (fullMsgLen + numFollowOnFragments*7) % TUNNEL_DATA_MAX_PAYLOAD_SIZE;
if (!nonFit || nonFit > m_RemainingSize)
{
CompleteCurrentTunnelDataMessage ();
CreateCurrentTunnelDataMessage ();
}
}
if (diLen + 6 <= m_RemainingSize)
{
// delivery instructions fit