RTCIceCandidatePairStats.responsesReceived - Web APIs
the responsesreceived property in the rtcicecandidatepairstats dictionary indicates the total number of stun connectivity check responses that have been received on the connection described by this pair of candidates.
... syntax responsesreceived = rtcicecandidatepairstats.responsesreceived; value an integer value which specifies the number of stun connectivity request responses that have been received on the connection described by this pair of candidates so far.
... specifications specification status comment identifiers for webrtc's statistics apithe definition of 'rtcicecandidatepairstats.responsesreceived' in that specification.

RTCIceCandidatePairStats - Web APIs
this value is undefined if no valid stun binding responses have been sent on the candidate pair; this can only happen if responsesreceived is 0.
... responsesreceived optional the total number of connectivity check responses that have been received.
...you can compute the average round trip time (rtt) by dividing this value by responsesreceived.

Index - Web APIs
3305 rtcicecandidatepairstats.responsesreceived api, connectivity, ice, networking, property, rtcicecandidatepairstats, received, reference, responses, stun, statistics, stats, webrtc, webrtc api, responsesreceived the responsesreceived property in the rtcicecandidatepairstats dictionary indicates the total number of stun connectivity check responses that have been received on the connection described by this pair of candidates.

RTCIceCandidatePairStats.consentExpiredTimestamp - Web APIs
this is only possible if responsesreceived is 0.

RTCIceCandidatePairStats.totalRoundTripTime - Web APIs
you can calculate the average round-trip time (rtt) by dividing this value by the value of the responsesreceived property: rtt = rtcicecandidatepairstats.totalroundtriptime / rtcicecandidatepairstats.responsesreceived; specifications specification status comment identifiers for webrtc's statistics apithe definition of 'rtcicecandidatepairstats.totalroundtriptime' in that specification.

RTCIceCandidatePairStats.writable - Web APIs
note: this property was removed from the specification in early 2017 because you can determine whether or not an incoming ice request is available to read by checking to see if responsesreceived is greater than 0 and that the time specified by consentexpiredtimestamp has not passed: if (icpstats.responsesreceived > 0 && icpstats.consentexpiredtimestamp < performance.now()) { /* at least one ice response has been received */ } ...