asterisk

Commit Graph

Author	SHA1	Message	Date
Pirmin Walthert	ca032d1e2e	res_rtp_asterisk: Free payload when error on insertion to data buffer When the ast_data_buffer_put rejects to add a packet, for example because the buffer already contains a packet with the same sequence number, the payload will never be freed, resulting in a memory leak. The data buffer will now return an error if this situation occurs allowing the caller to free the payload. The res_rtp_asterisk module has also been updated to do this. ASTERISK-28826 Change-Id: Ie6c49495d1c921d5f997651c7d0f79646f095cf1	6 years ago
Ben Ford	5bacde37a2	res_rtp_asterisk: Add support for sending NACK requests. Support has been added for receiving a NACK request and handling it. Now, Asterisk can detect when a NACK request should be sent and knows how to construct one based on the packets we've received from the remote end. A buffer has been added that will store out of order packets until we receive the packet we are expecting. Then, these packets are handled like normal and frames are queued to the core like normal. Asterisk knows which packets to request in the NACK request using a vector which stores the sequence numbers of the packets we are currently missing. If a missing packet is received, cycle through the buffer until we reach another packet we have not received yet. If the buffer reaches a certain size, send a NACK request. If the buffer reaches its max size, queue all frames to the core and wipe the buffer and vector. According to RFC3711, the NACK request must be sent out in a compound packet. All compound packets must start with a sender or receiver report, so some work was done to refactor the current sender / receiver code to allow it to be used without having to also include sdes information and automatically send the report. Also added additional functionality to ast_data_buffer, along with some testing. For more information, refer to the wiki page: https://wiki.asterisk.org/wiki/display/AST/WebRTC+User+Experience+Improvements ASTERISK-27810 #close Change-Id: Idab644b08a1593659c92cda64132ccc203fe991d	8 years ago
Ben Ford	138e0eff4e	Add data buffer API to store packets. Adds a data buffer with a configurable size that can store different kinds of packets (like RTP packets for retransmission). Given a number it will store a data packet at that position relative to the others. Given a number it will retrieve the given data packet if it is present. This is purposely a storage of arbitrary things so it can be used not just for RTP packets but also Asterisk frames in the future if needed. The API does not internally use a lock, so it will be up to the user of the API to properly protect the data buffer. For more information, refer to the wiki page: https://wiki.asterisk.org/wiki/display/AST/WebRTC+User+Experience+Improvements Change-Id: Iff13c5d4795d52356959fe2a57360cd57dfade07	8 years ago

Author

SHA1

Message

Date

Pirmin Walthert

ca032d1e2e

res_rtp_asterisk: Free payload when error on insertion to data buffer

When the ast_data_buffer_put rejects to add a packet, for example because
the buffer already contains a packet with the same sequence number, the
payload will never be freed, resulting in a memory leak.

The data buffer will now return an error if this situation occurs
allowing the caller to free the payload. The res_rtp_asterisk module
has also been updated to do this.

ASTERISK-28826

Change-Id: Ie6c49495d1c921d5f997651c7d0f79646f095cf1

Ben Ford

5bacde37a2

res_rtp_asterisk: Add support for sending NACK requests.

Support has been added for receiving a NACK request and handling it.
Now, Asterisk can detect when a NACK request should be sent and knows
how to construct one based on the packets we've received from the remote
end. A buffer has been added that will store out of order packets until
we receive the packet we are expecting. Then, these packets are handled
like normal and frames are queued to the core like normal. Asterisk
knows which packets to request in the NACK request using a vector
which stores the sequence numbers of the packets we are currently missing.

If a missing packet is received, cycle through the buffer until we reach
another packet we have not received yet. If the buffer reaches a certain
size, send a NACK request. If the buffer reaches its max size, queue all
frames to the core and wipe the buffer and vector.

According to RFC3711, the NACK request must be sent out in a compound
packet. All compound packets must start with a sender or receiver
report, so some work was done to refactor the current sender / receiver
code to allow it to be used without having to also include sdes
information and automatically send the report.

Also added additional functionality to ast_data_buffer, along with some
testing.

For more information, refer to the wiki page:
https://wiki.asterisk.org/wiki/display/AST/WebRTC+User+Experience+Improvements

ASTERISK-27810 #close

Change-Id: Idab644b08a1593659c92cda64132ccc203fe991d

Ben Ford

138e0eff4e

Add data buffer API to store packets.

Adds a data buffer with a configurable size that can store different
kinds of packets (like RTP packets for retransmission). Given a number
it will store a data packet at that position relative to the others.
Given a number it will retrieve the given data packet if it is present.
This is purposely a storage of arbitrary things so it can be used not
just for RTP packets but also Asterisk frames in the future if needed.
The API does not internally use a lock, so it will be up to the user of
the API to properly protect the data buffer.

For more information, refer to the wiki page:
https://wiki.asterisk.org/wiki/display/AST/WebRTC+User+Experience+Improvements

Change-Id: Iff13c5d4795d52356959fe2a57360cd57dfade07

3 Commits (e2f2e8dceff553e19ffa81c8fa63db00d7828aef)