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lnwire: features "maxAllowedSize" fix
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lnwire/features.go

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@@ -49,16 +49,14 @@ const (
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// maxAllowedSize is a maximum allowed size of feature vector.
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//
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// NOTE: Within the protocol, the maximum allowed message size is 65535
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// bytes. Adding the overhead from the crypto protocol (the 2-byte
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// packet length and 16-byte MAC), we arrive at 65569 bytes. Accounting
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// for the overhead within the feature message to signal the type of
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// the message, that leaves 65567 bytes for the init message itself.
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// Next, we reserve 4-bytes to encode the lengths of both the local and
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// global feature vectors, so 65563 for the global and local features.
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// Knocking off one byte for the sake of the calculation, that leads to
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// a max allowed size of 32781 bytes for each feature vector, or 131124
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// different features.
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maxAllowedSize = 32781
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// bytes for all messages. Accounting for the overhead within the feature
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// message to signal the type of message, that leaves us with 65533 bytes
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// for the init message itself. Next, we reserve 4 bytes to encode the
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// lengths of both the local and global feature vectors, so 65529 bytes
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// for the local and global features. Knocking off one byte for the sake
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// of the calculation, that leads us to 32764 bytes for each feature
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// vector, or 131056 different features.
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maxAllowedSize = 32764
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)
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// LocalFeatures is a mapping of known connection-local feature bits to a

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