Message encoding and length (or terminator or checksum or error correction
or...) should be part of the transport protocol, in my humble opinion.
--
Gavin Andresen
> On Jan 26, 2014, at 6:01 PM, Mike Hearn wrote:
>
> To be more accurate, the embedded messages already have length prefixes :-)
To be more accurate, the embedded messages already have length prefixes :-)
On Sun, Jan 26, 2014 at 11:14 PM, Andreas Schildbach
wrote:
> Just keep in mind that if it turns out we need to retrofit messages with
> length prefixes I fear we will have to restart with new mime-types. The
> nature of
Just keep in mind that if it turns out we need to retrofit messages with
length prefixes I fear we will have to restart with new mime-types. The
nature of prefixes being always at the start means this rules out simply
incrementing a protocol version number.
Correcting myself:
> it might be a good
I think for "binding" the payment protocol to those transports we should
indeed use protobuf varint length prefixes. But it's unnecessary for all
cases. Unless Gavin feels it'd be better to be consistent everywhere and is
willing to change the spec and code - as far as I know though we're trying
to
Bluetooth, Wifi Direct, HTTP request/responses via broken proxies, smoke
signals... basically anything that is a stream rather than a file.
Right, NFC NDEF and QR codes are not affected, so we can skip the
delimiter for these mediums.
On 01/26/2014 10:24 PM, Mike Hearn wrote:
> Which medium is t
Which medium is this an issue for? As you note, for files and HTTP
responses it's not a problem in practice. i'd guess nor for NFC tags nor QR
codes.
On Sun, Jan 26, 2014 at 10:11 PM, Andreas Schildbach
wrote:
> I'm experimenting with BIP70/71 (payment protocol) usage in face to face
> payments
I'm experimenting with BIP70/71 (payment protocol) usage in face to face
payments (more on that soon).
I've excountered an issue with the protobuf format. Protobufs are not
self-delimiting. That means if you're reading from an undelimited
stream, you will read endlessly because you don't know how
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