Osmocom's Base Station Controller for 2G mobile networks https://osmocom.org/projects/osmobsc
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osmo-bsc/contrib/rtp/rtp_replay_sip.st

88 lines
2.1 KiB

"""
Create a SIP connection and then stream...
"""
PackageLoader
fileInPackage: #OsmoSIP.
"Load for the replay code"
FileStream fileIn: 'rtp_replay_shared.st'.
Osmo.SIPCall subclass: StreamCall [
| sem stream |
createCall: aSDP [
| sdp |
stream := RTPReplay on: 'rtp_ssrc6976010.240.240.1_to_10.240.240.50.state'.
sdp := aSDP % {stream localPort}.
^ super createCall: sdp.
]
sem: aSemaphore [
sem := aSemaphore
]
sessionNew [
| host port |
Transcript nextPutAll: 'The call has started'; nl.
Transcript nextPutAll: sdp_result; nl.
host := SDPUtils findHost: sdp_result.
port := SDPUtils findPort: sdp_result.
[
stream streamAudio: host port: port.
Transcript nextPutAll: 'Streaming has finished.'; nl.
] fork.
]
sessionFailed [
sem signal
]
sessionEnd [
sem signal
]
]
Eval [
| transport agent call sem sdp_fr sdp_amr |
sdp_fr := (WriteStream on: String new)
nextPutAll: 'v=0'; cr; nl;
nextPutAll: 'o=twinkle 1739517580 1043400482 IN IP4 127.0.0.1'; cr; nl;
nextPutAll: 's=-'; cr; nl;
nextPutAll: 'c=IN IP4 127.0.0.1'; cr; nl;
nextPutAll: 't=0 0'; cr; nl;
nextPutAll: 'm=audio %1 RTP/AVP 0 101'; cr; nl;
nextPutAll: 'a=rtpmap:0 PCMU/8000'; cr; nl;
nextPutAll: 'a=rtpmap:101 telephone-event/8000'; cr; nl;
nextPutAll: 'a=fmtp:101 0-15'; cr; nl;
nextPutAll: 'a=ptime:20'; cr; nl;
contents.
sem := Semaphore new.
transport := Osmo.SIPUdpTransport
startOn: '0.0.0.0' port: 5066.
agent := Osmo.SIPUserAgent createOn: transport.
transport start.
call := (StreamCall
fromUser: 'sip:1000@sip.zecke.osmocom.org'
host: '127.0.0.1'
port: 5060
to: 'sip:123456@127.0.0.1'
on: agent)
sem: sem; yourself.
call createCall: sdp_fr.
"Wait for the stream to have ended"
sem wait.
(Delay forSeconds: 4) wait.
]