There is no need to have an extra pointer in the struct that is
set to right after the object at initialization and is never modified
because a flexible array member can be used instead.
This has advantages: `struct message` is now smaller, and there is
no extra load when accessing `struct message::data`.
Yamaha MusicCast (or at least the RX-A880) seems to be stricter about
the URI here, as it rejects `*`. Examples, such as those documented by
OpenAirplay, use the real URI.
Some clients may send headers with trailing whitespace, which can upset
subsequent parsing of the data into numbers. This patch removes such trailing
whitespace before further processing the header data.
Make the receiving state machine more pronounced by explicitly storing
the state in the client. Furthermore, always consume the message content
if there is one and not only if the content type is "application/octet-stream",
but do not try to do it at once - like previously, instead only as the
socket becomes readable. The body is currently dropped, but it could
easily be collected in e.g. a `pw_array` should the need ever arise.
See #2673
Previously, the state used to receive messages from the remote
end was not reset when the client connected, which could
lead to issues if the same client is reused for multiple
connections.
Previously, the content had to be a null-terminated byte
sequence because the sending function used `strlen()` to
determine its length. However, `rtsp_do_auth_setup()` needs
to send a non-textual byte sequence, and it only worked so
far because it did not happen to have any zero bytes in it.
Add a "content_length" parameter and change the type of
"content" to facilitate sending arbitrary byte sequences.
Handle control source io. We don't yet implement retransmission,
though.
Handle latency by exposing the server latency on the stream ports.
Use the Format param event to connect/announce and teardown.
Use the stream state to record/flush.
Fix some leaks.
Remove the state from rtsp-client, we don't need it.
Strip whitespace from header values.
