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Update WebRTC candidates logic

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This commit is contained in:
Alex X
2023-11-02 15:37:44 +03:00
parent 6b29c37433
commit 0f1dc73d55
12 changed files with 112 additions and 89 deletions
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30
pkg/webrtc/helpers.go
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@@ -260,17 +260,15 @@ func MimeType(codec *core.Codec) string {
// for server reflexive candidates, 110 for peer reflexive candidates,
// and 0 for relayed candidates.
// We use new priority 120 for Manual Host. It is lower than real Host,
// but more then any other candidates.
const PriorityTypeHostUDP = (1 << 24) * int(126)
const PriorityTypeHostTCP = (1 << 24) * int(126-27)
const PriorityLocalUDP = (1 << 8) * int(65535)
const PriorityLocalTCPPassive = (1 << 8) * int((1<<13)*4+8191)
const PriorityComponentRTP = 1 * int(256-ice.ComponentRTP)
const PriorityManualHost = (1 << 24) * uint32(120)
const PriorityLocalUDP = (1 << 8) * uint32(65535)
const PriorityLocalTCPPassive = (1 << 8) * uint32((1<<13)*4+8191)
const PriorityComponentRTP = uint32(256 - ice.ComponentRTP)
func CandidateManualHostUDP(host string, port int) string {
func CandidateManualHostUDP(host, port string, offset int) string {
foundation := crc32.ChecksumIEEE([]byte("host" + host + "udp4"))
priority := PriorityManualHost + PriorityLocalUDP + PriorityComponentRTP
priority := PriorityTypeHostUDP + PriorityLocalUDP + PriorityComponentRTP + offset
// 1. Foundation
// 2. Component, always 1 because RTP
@@ -279,19 +277,15 @@ func CandidateManualHostUDP(host string, port int) string {
// 5. Host - IP4 or IP6 or domain name
// 6. Port
// 7. typ host
return fmt.Sprintf(
"candidate:%d 1 udp %d %s %d typ host",
foundation, priority, host, port,
)
return fmt.Sprintf("candidate:%d 1 udp %d %s %s typ host", foundation, priority, host, port)
}
func CandidateManualHostTCPPassive(address string, port int) string {
foundation := crc32.ChecksumIEEE([]byte("host" + address + "tcp4"))
priority := PriorityManualHost + PriorityLocalTCPPassive + PriorityComponentRTP
func CandidateManualHostTCPPassive(host, port string, offset int) string {
foundation := crc32.ChecksumIEEE([]byte("host" + host + "tcp4"))
priority := PriorityTypeHostTCP + PriorityLocalTCPPassive + PriorityComponentRTP + offset
return fmt.Sprintf(
"candidate:%d 1 tcp %d %s %d typ host tcptype passive",
foundation, priority, address, port,
"candidate:%d 1 tcp %d %s %s typ host tcptype passive", foundation, priority, host, port,
)
}