func (tx *Transaction) SerializedSize() int {
// Version(4) + LockTime(4) + Varint(len(In)) + Reduce(In, Size(TxIn)) + Reduce(Out, Size(TxOut))
return 8 +
varint.Size(uint64(len(tx.In))) +
ReduceTotalSerializedSize(iterator.New(tx.In)) +
varint.Size(uint64(len(tx.Out))) +
ReduceTotalSerializedSize(iterator.New(tx.Out))
}
func TestSize(t *testing.T) {
tests := []struct {
val uint64 // Value to get the serialized size for
size int // Expected serialized size
}{
// Single byte
{0, 1},
// Max single byte
{0xfc, 1},
// Min 2-byte
{0xfd, 3},
// Max 2-byte
{0xffff, 3},
// Min 4-byte
{0x10000, 5},
// Max 4-byte
{0xffffffff, 5},
// Min 8-byte
{0x100000000, 9},
// Max 8-byte
{0xffffffffffffffff, 9},
}
for i, test := range tests {
serializedSize := varint.Size(test.val)
if serializedSize != test.size {
t.Errorf("Size #%d got: %d, want: %d", i, serializedSize, test.size)
continue
}
}
}
func (tx *TxOut) SerializedSize() int {
// Value(8) + Varint(len(PKScript))
return 8 + varint.Size(uint64(len(tx.PKScript)))
}
func (tx *TxIn) SerializedSize() int {
return tx.PreviousTxOut.SerializedSize() +
varint.Size(uint64(len(tx.ScriptSignature))) +
len(tx.ScriptSignature) +
varint.Size(uint64(tx.Sequence))
}