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Improve MTU settings and documentation. #41

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This commit is contained in:
Kleissner
2021-11-09 21:04:06 +01:00
parent 014d4a34ee
commit ce37461705
4 changed files with 23 additions and 8 deletions
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4
protocol/Message Encoding Transfer.go
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@@ -75,7 +75,9 @@ func DecodeTransfer(msg *MessageRaw) (result *MessageTransfer, err error) {
return result, nil
}
// TransferMaxEmbedSize is the maximum size of embedded data inside the Transfer message.
// TransferMaxEmbedSize is a recommended default upper size of embedded data inside the Transfer message, to be used as MaxPacketSize limit in the embedded protocol.
// This value is chosen as the lowest denominator of different environments (IPv4, IPv6, Ethernet, Internet) for safe transfer, not for highest performance.
// The caller may send bigger payloads but may risk that data packets are simply dropped and never arrive. A MTU negotiation or detection could pimp that.
const TransferMaxEmbedSize = internetSafeMTU - PacketLengthMin - transferPayloadHeaderSize
// EncodeTransfer encodes a transfer message. The embedded packet size must be smaller than TransferMaxEmbedSize.