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statistics.go
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statistics.go
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// https://github.com/Haivision/srt/blob/master/docs/API/statistics.md
package srt
// Statistics represents the statistics for a connection
type Statistics struct {
MsTimeStamp uint64 // The time elapsed, in milliseconds, since the SRT socket has been created
// Accumulated
Accumulated StatisticsAccumulated
// Interval
Interval StatisticsInterval
// Instantaneous
Instantaneous StatisticsInstantaneous
}
type StatisticsAccumulated struct {
PktSent uint64 // The total number of sent DATA packets, including retransmitted packets
PktRecv uint64 // The total number of received DATA packets, including retransmitted packets
PktSentUnique uint64 // The total number of unique DATA packets sent by the SRT sender
PktRecvUnique uint64 // The total number of unique original, retransmitted or recovered by the packet filter DATA packets received in time, decrypted without errors and, as a result, scheduled for delivery to the upstream application by the SRT receiver.
PktSendLoss uint64 // The total number of data packets considered or reported as lost at the sender side. Does not correspond to the packets detected as lost at the receiver side.
PktRecvLoss uint64 // The total number of SRT DATA packets detected as presently missing (either reordered or lost) at the receiver side
PktRetrans uint64 // The total number of retransmitted packets sent by the SRT sender
PktRecvRetrans uint64 // The total number of retransmitted packets registered at the receiver side
PktSentACK uint64 // The total number of sent ACK (Acknowledgement) control packets
PktRecvACK uint64 // The total number of received ACK (Acknowledgement) control packets
PktSentNAK uint64 // The total number of sent NAK (Negative Acknowledgement) control packets
PktRecvNAK uint64 // The total number of received NAK (Negative Acknowledgement) control packets
PktSentKM uint64 // The total number of sent KM (Key Material) control packets
PktRecvKM uint64 // The total number of received KM (Key Material) control packets
UsSndDuration uint64 // The total accumulated time in microseconds, during which the SRT sender has some data to transmit, including packets that have been sent, but not yet acknowledged
PktRecvBelated uint64
PktSendDrop uint64 // The total number of dropped by the SRT sender DATA packets that have no chance to be delivered in time
PktRecvDrop uint64 // The total number of dropped by the SRT receiver and, as a result, not delivered to the upstream application DATA packets
PktRecvUndecrypt uint64 // The total number of packets that failed to be decrypted at the receiver side
ByteSent uint64 // Same as pktSent, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecv uint64 // Same as pktRecv, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteSentUnique uint64 // Same as pktSentUnique, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvUnique uint64 // Same as pktRecvUnique, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvLoss uint64 // Same as pktRecvLoss, but expressed in bytes, including payload and all the headers (IP, TCP, SRT), bytes for the presently missing (either reordered or lost) packets' payloads are estimated based on the average packet size
ByteRetrans uint64 // Same as pktRetrans, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvRetrans uint64 // Same as pktRecvRetrans, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvBelated uint64
ByteSendDrop uint64 // Same as pktSendDrop, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvDrop uint64 // Same as pktRecvDrop, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvUndecrypt uint64 // Same as pktRecvUndecrypt, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
}
type StatisticsInterval struct {
MsInterval uint64 // Length of the interval, in milliseconds
PktSent uint64 // Number of sent DATA packets, including retransmitted packets
PktRecv uint64 // Number of received DATA packets, including retransmitted packets
PktSentUnique uint64 // Number of unique DATA packets sent by the SRT sender
PktRecvUnique uint64 // Number of unique original, retransmitted or recovered by the packet filter DATA packets received in time, decrypted without errors and, as a result, scheduled for delivery to the upstream application by the SRT receiver.
PktSendLoss uint64 // Number of data packets considered or reported as lost at the sender side. Does not correspond to the packets detected as lost at the receiver side.
PktRecvLoss uint64 // Number of SRT DATA packets detected as presently missing (either reordered or lost) at the receiver side
PktRetrans uint64 // Number of retransmitted packets sent by the SRT sender
PktRecvRetrans uint64 // Number of retransmitted packets registered at the receiver side
PktSentACK uint64 // Number of sent ACK (Acknowledgement) control packets
PktRecvACK uint64 // Number of received ACK (Acknowledgement) control packets
PktSentNAK uint64 // Number of sent NAK (Negative Acknowledgement) control packets
PktRecvNAK uint64 // Number of received NAK (Negative Acknowledgement) control packets
MbpsSendRate float64 // Sending rate, in Mbps
MbpsRecvRate float64 // Receiving rate, in Mbps
UsSndDuration uint64 // Accumulated time in microseconds, during which the SRT sender has some data to transmit, including packets that have been sent, but not yet acknowledged
PktReorderDistance uint64
PktRecvBelated uint64 // Number of packets that arrive too late
PktSndDrop uint64 // Number of dropped by the SRT sender DATA packets that have no chance to be delivered in time
PktRecvDrop uint64 // Number of dropped by the SRT receiver and, as a result, not delivered to the upstream application DATA packets
PktRecvUndecrypt uint64 // Number of packets that failed to be decrypted at the receiver side
ByteSent uint64 // Same as pktSent, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecv uint64 // Same as pktRecv, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteSentUnique uint64 // Same as pktSentUnique, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvUnique uint64 // Same as pktRecvUnique, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvLoss uint64 // Same as pktRecvLoss, but expressed in bytes, including payload and all the headers (IP, TCP, SRT), bytes for the presently missing (either reordered or lost) packets' payloads are estimated based on the average packet size
ByteRetrans uint64 // Same as pktRetrans, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvRetrans uint64 // Same as pktRecvRetrans, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvBelated uint64 // Same as pktRecvBelated, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteSendDrop uint64 // Same as pktSendDrop, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvDrop uint64 // Same as pktRecvDrop, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
ByteRecvUndecrypt uint64 // Same as pktRecvUndecrypt, but expressed in bytes, including payload and all the headers (IP, TCP, SRT)
}
type StatisticsInstantaneous struct {
UsPktSendPeriod float64 // Current minimum time interval between which consecutive packets are sent, in microseconds
PktFlowWindow uint64 // The maximum number of packets that can be "in flight"
PktFlightSize uint64 // The number of packets in flight
MsRTT float64 // Smoothed round-trip time (SRTT), an exponentially-weighted moving average (EWMA) of an endpoint's RTT samples, in milliseconds
MbpsSentRate float64 // Current transmission bandwidth, in Mbps
MbpsRecvRate float64 // Current receiving bandwidth, in Mbps
MbpsLinkCapacity float64 // Estimated capacity of the network link, in Mbps
ByteAvailSendBuf uint64 // The available space in the sender's buffer, in bytes
ByteAvailRecvBuf uint64 // The available space in the receiver's buffer, in bytes
MbpsMaxBW float64 // Transmission bandwidth limit, in Mbps
ByteMSS uint64 // Maximum Segment Size (MSS), in bytes
PktSendBuf uint64 // The number of packets in the sender's buffer that are already scheduled for sending or even possibly sent, but not yet acknowledged
ByteSendBuf uint64 // Instantaneous (current) value of pktSndBuf, but expressed in bytes, including payload and all headers (IP, TCP, SRT)
MsSendBuf uint64 // The timespan (msec) of packets in the sender's buffer (unacknowledged packets)
MsSendTsbPdDelay uint64 // Timestamp-based Packet Delivery Delay value of the peer
PktRecvBuf uint64 // The number of acknowledged packets in receiver's buffer
ByteRecvBuf uint64 // Instantaneous (current) value of pktRcvBuf, expressed in bytes, including payload and all headers (IP, TCP, SRT)
MsRecvBuf uint64 // The timespan (msec) of acknowledged packets in the receiver's buffer
MsRecvTsbPdDelay uint64 // Timestamp-based Packet Delivery Delay value set on the socket via SRTO_RCVLATENCY or SRTO_LATENCY
PktReorderTolerance uint64 // Instant value of the packet reorder tolerance
PktRecvAvgBelatedTime uint64 // Accumulated difference between the current time and the time-to-play of a packet that is received late
PktSendLossRate float64 // Percentage of resent data vs. sent data
PktRecvLossRate float64 // Percentage of retransmitted data vs. received data
}