package nettrace

Import Path
	internal/nettrace (on go.dev)

Dependency Relation
	imports 0 packages, and imported by one package


Involved Source Files

	
		Package nettrace contains internal hooks for tracing activity in
		the net package. This package is purely internal for use by the
		net/http/httptrace package and has no stable API exposed to end
		users.


Package-Level Type Names (total 3, all are exported)


	/* sort exporteds by:  |  */
	
		LookupIPAltResolverKey is a context.Context Value key used by tests to
		specify an alternate resolver func.
		It is not exposed to outsider users. (But see issue 12503)
		The value should be the same type as lookupIP:
		    func lookupIP(ctx context.Context, host string) ([]IPAddr, error)


	
		Trace contains a set of hooks for tracing events within
		the net package. Any specific hook may be nil.

		
			
				ConnectStart is called after a Dial with the results, excluding
				Dials made during DNS lookups. It may also be called multiple
				times, like ConnectStart.

			
				ConnectStart is called before a Dial, excluding Dials made
				during DNS lookups. In the case of DualStack (Happy Eyeballs)
				dialing, this may be called multiple times, from multiple
				goroutines.

			
				DNSDone is called after a DNS lookup completes (or fails).
				The coalesced parameter is whether singleflight de-dupped
				the call. The addrs are of type net.IPAddr but can't
				actually be for circular dependency reasons.

			
				DNSStart is called with the hostname of a DNS lookup
				before it begins.



	
		TraceKey is a context.Context Value key. Its associated value should
		be a *Trace struct.