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PerformanceResourceTiming.nextHopProtocol

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The nextHopProtocol property is a string representing the network protocol used to fetch the resource, as identified by the ALPN Protocol ID (RFC7301).

When a proxy is used, if a tunnel connection is established, this property returns the ALPN Protocol ID of the tunneled protocol. Otherwise, this property returns the ALPN Protocol ID of the first hop to the proxy.

This property is Read only .

Syntax

resource.nextHopProtocol;

Return value

A string representing the network protocol used to fetch the resource, as identified by the ALPN Protocol ID (RFC7301).

Example

The following example uses the nextHopProtocol property.

function print_PerformanceEntries() {
  // Use getEntriesByType() to just get the "resource" events
  var p = performance.getEntriesByType("resource");
  for (var i=0; i < p.length; i++) {
    print_nextHopProtocol(p[i]);
  }
}
function print_nextHopProtocol(perfEntry) {
  var value = "nextHopProtocol" in perfEntry;
  if (value)
    console.log("nextHopProtocol = " + perfEntry.nextHopProtocol);
  else
    console.log("nextHopProtocol = NOT supported");
}

Specifications

Specification Status Comment
Resource Timing
The definition of 'nextHopProtocol' in that specification.
Editor's Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support. No support No support No support No support No support
Feature Android Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support. No support No support No support No support No support No support

Document Tags and Contributors

 Contributors to this page: rolfedh, AFBarstow
 Last updated by: rolfedh,