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rtp: take into account ipv4/ipv6 when calculating header size

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Calculate the header_size based on the IP version instead of using a
hardcoded value.

Fixes #4524
This commit is contained in:
Wim Taymans 2025-01-24 12:43:34 +01:00
parent 180967bb64
commit 830bd19ca2
4 changed files with 22 additions and 4 deletions
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8
src/modules/module-rtp/stream.c
View file

@ -71,6 +71,7 @@ struct impl {
uint32_t ts_offset;
uint32_t psamples;
uint32_t mtu;
uint32_t header_size;
uint32_t payload_size;
struct spa_ringbuffer ring;
@ -442,11 +443,14 @@ struct rtp_stream *rtp_stream_new(struct pw_core *core,
impl->payload = pw_properties_get_uint32(props, "rtp.payload", impl->payload);
impl->mtu = pw_properties_get_uint32(props, "net.mtu", DEFAULT_MTU);
if (impl->mtu <= PACKET_HEADER_SIZE) {
impl->header_size = pw_properties_get_uint32(props, "net.header", IP4_HEADER_SIZE + UDP_HEADER_SIZE);
impl->header_size += RTP_HEADER_SIZE;
if (impl->mtu <= impl->header_size) {
pw_log_error("invalid MTU %d, using %d", impl->mtu, DEFAULT_MTU);
impl->mtu = DEFAULT_MTU;
}
impl->payload_size = impl->mtu - PACKET_HEADER_SIZE;
impl->payload_size = impl->mtu - impl->header_size;
impl->seq = pw_rand32();