# OnPremise SRT Server

# version 1.0.3 (2020/12/17):
- First public version

# version 1.0.4 (2021/01/04):
- Bug than could make reinit the server program randomly
 
# version 1.0.5 (2021/01/11):
- updated SRT lib to v1.4.2

# version 1.0.6 (2021/01/13):
- solved the timestamp issues that derived into audio artifacts in the Facebook transcoding process  

# version 1.0.7 (2021/01/16):
- audio resampling to 44100 Hz to avoid audio issues on Youtube and Facebook re-encoding
- bad detected CGNAT in system tab

# version 1.1.0 (2021/01/23):
- serveral front-end improvements
- SRT streamid for callers implemented
- auto-reinit on software update (no need to reboot from now)
- SDT renaming on UDP-TS inputs

# version 1.1.1 (2021/01/30):
- RTMP reconnection issues

# version 1.1.2 (2021/02/08):
- Front-end issue refreshing channels options in Chrome for Mac (thanks to Edgar)

# version 1.2.0 (2021/02/21):
- ZeroTier modules removed to avoid BSL conflicts
- Open Source License txt with all FOSS packages used, added to the GUI

# version 1.2.1 (2021/02/24):
- SRT latency greater than 3000 ms issues. Now you can reach upto 8000 ms

# version 1.2.3 (2021/03/23):
- License issues on some mainboard models
- Several bugs

# version 1.2.4 (2021/03/25):
- Admin username is now read-only
- A front-end bug didn't show the input channels to choose when creating a new output

# version 1.2.6 (2021/05/18):
- Sort outputs alphabetically button in the Streams tab
- SRT library update to 1.4.3 (latest stable)
- UDP multicast binding to an specific physical network interface (bind_addr@mcast_group, i.e: Address = 192.168.100.44@238.0.0.1)

# version 1.2.7 (2021/05/20):
- Security update

# version 1.2.8 (2021/06/08):
- UDP/SRT default socket buffer increased to avoid issues on less powerful computers

# version 1.2.9 (2021/07/15):
- Silence alarm limit raised to -50 dB, needed in some playouts systems 

# version 1.2.10 (2021/09/14):
- SRT and UDP input and output sockets buffers increased to solve smears and pixels on low screen in bursty data rates. 

# version 1.3.4 (2021/10/26): (important update)
- WARNING: This update makes hardware reboot, so have this in mind before updating from your dashboard.
- Layer 1 of software rewritten from start.
- Variable non-standard size packets now supported on SRT and UDP with also RTP headers.
- EtherMPX, uMPX/microMPX and other RTP streams are now supported.
- SRT library updated to version 1.4.4 (latest stable).
- UDP burst output and SRT jitter much lower.
- New ISO file based on Debian 11 with a newer kernel 5.10 and new drivers.

# version 1.3.5 (2022/05/02): (important update)
- New ISO file based on Debian 11.3 with updated drivers.
- Several security patches
- Updated libraries

# version 1.3.6 (2022/07/18): (important update)
- Bandwidth overhead limited to 50% of nominal, to avoid skyrocketing on very high packet loses scenarios
- Solved broken restore in version 1.3.5.
- SMTP email alarms sender (stream interrupted and audio silence watchdog)
- Quick stream start when rebooted

# version 1.3.7 (2022/08/06):
- Added email alarm also when stream or audio are back. Also says if the system is just started/rebooted.
- Quick restore process, no need to reboot now.
- Bug concurrent race conditions with email thread and the status of streams (solved). Could make to restart the program or hide the streams.
- ZeroTier service join capability.

# version 1.5.0 (2022/09/16):
WARNING: INSTALL IT ONLY FROM THE DOWNLOADABLE ISO IMAGE !!!
- There is no updates from older versions to this one.
- This version has been rebuit from ground up using Debian 11.5, so cannot be integrated in an older version.
- Backups from older versions are perfectly compatible, so you can restore them in this new version.
- This new version has improved HLS and DASH compatibility with the latest versions of them, and adaptability to newer versions to come.

# version 1.5.1 (2022/10/04):
- Swagger documentation was missing in the previous version (only for REST API developpers)

# version 1.5.2 (2022/10/13):
- Solves an important issue related to address handling based on SLAAC on the new transition from IPv4 to IPv6
- Installs many non-free firmwares for ethernet drivers that will allow install the system in lots of hardware
- You can now define a default gateway for every interface, not just the default one for all the system

# version 1.5.3 (2022/11/21):
- Corrects PCRs in HLS streams, so they can be used in DVB broadcast directly
- Better HLS compatibility
- You can select a sub-stream in the HLS playlist: i.e http://ip-serv/playlist.m3u8?stream=720p (among: 240p,360p,480p,576p,720p,1080p)
- Shows the SRT listener port

# version 1.5.4 (2022/12/25):
- Hostname was not well stablished

# version 1.5.5 (2023/02/05):
- HLS issues solved

# version 1.5.6 (2023/07/15):
- Update https timeout increased to avoid issues in some networks
- SRT Listener able to bind local interfaces

# version 1.5.7 (2023/08/18):
- USB key dongle for perpetual License

# version 1.5.8 (2023/09/20):
- E-mail false alarm patched

# version 1.5.9 (2024/01/24):
- SRT with any StreamID and Password chars (corrected SRT parsing)

# version 1.5.10 (2024/09/11):
- RTMP Input Listener using rtmp://0.0.0.0:1935/appname as RTMP URL

# version 1.5.12 (2024/11/11):
- UDP multicast packets marked with TOS=0xB8 for videostream priority
- UDP multicast sender IP_MULTICAST_LOOP disabled, to avoid loops on multiple LAN interfaces subscribed to the same mcast group

# version 1.5.13 (2024/11/15):
- Library SRT updated to the latest version 1.5.4
- Added some extra source buffer at SRT protocol to increase stability on VBR bursting

# version 1.5.14 (2024/12/11):
- Updated libraries for HLS, DASH and UDP/RTP protocols
- Fixed IPv6 network config and gateways
- You can change network config with no rebooting (pay attention to change to the new address in your browser)

# version 1.5.15 (2024/12/13):
- Better tools to diagnose issues
- IPv6 fully supported