Hi capnproto people, We are transmitting a stream of capnproto messages. The messages are of different types. There is no in-line framing in the stream of bytes. We receive the stream as an array of bytes alongside the list of capnproto schemas to use to decode the stream. I am trying to decode the messages from the stream using pycapnp and I'm having trouble figuring out how large a message is so that I can advance the pointer to the next message.
My code looks like this: next_buf = body for message_class in message_classes: message = message_class.from_bytes(next_buf) next_buf = next_buf[? what goes here ? :] The message read with from_bytes() is correct, but how many bytes did it consume? * If I use the read(file) API, the file is correctly advanced, but then I have to write the stream to a file. * The message has a total_size.word_count member ... but the value of this field appears to be incorrect for purposes of advancing the buffer pointer. As far as I can tell it is returning the total number of words, omitting 1 word for segment count and 1 word / segment. * I can calculate the number by bytes consumed using to_segments() and then porting c++ code in computeSerializedSizeInWords() ... but am I supposed to do that? to_segments() copies all the data (again) ... so that doesn't seem right. I feel like I'm missing something obvious. How should I calculate message size and/or read messages from a stream? Thanks, Andy -- You received this message because you are subscribed to the Google Groups "Cap'n Proto" group. To unsubscribe from this group and stop receiving emails from it, send an email to capnproto+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/capnproto/CAOqXSOuOXqS%3DVWnpZG%2BSdoW2JQ5J-3SP3r0-NBv4nVTCdaKLbQ%40mail.gmail.com.
