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feat(netxlite): implement DNSTransport wrapping (#776)

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Acknowledge that transports MAY be used in isolation (i.e., outside
of a Resolver) and add support for wrapping.

Ensure that every factory that creates an unwrapped type is named
accordingly to hopefully ensure there are no surprises.

Implement DNSTransport wrapping and use a technique similar to the
one used by Dialer to customize the DNSTransport while constructing
more complex data types (e.g., a specific resolver).

Ensure that the stdlib resolver's own "getaddrinfo" transport (1)
is wrapped and (2) could be extended during construction.

This work is part of my ongoing effort to bring to this repository
websteps-illustrated changes relative to netxlite.

Ref issue: https://github.com/ooni/probe/issues/2096
This commit is contained in:
Simone Basso
2022-06-01 11:10:08 +02:00
committed by GitHub
parent 923d81cdee
commit 8f7e3803eb
20 changed files with 369 additions and 91 deletions
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internal/engine/netx/resolver/integration_test.go
+14 -14
View File
@@ -70,50 +70,50 @@ func TestNewResolverSystem(t *testing.T) {
}
func TestNewResolverUDPAddress(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverUDPTransport(netxlite.DefaultDialer, "8.8.8.8:53"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverUDPTransport(netxlite.DefaultDialer, "8.8.8.8:53"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}
func TestNewResolverUDPDomain(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverUDPTransport(netxlite.DefaultDialer, "dns.google.com:53"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverUDPTransport(netxlite.DefaultDialer, "dns.google.com:53"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}
func TestNewResolverTCPAddress(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverTCPTransport(new(net.Dialer).DialContext, "8.8.8.8:53"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverTCPTransport(new(net.Dialer).DialContext, "8.8.8.8:53"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}
func TestNewResolverTCPDomain(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverTCPTransport(new(net.Dialer).DialContext, "dns.google.com:53"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverTCPTransport(new(net.Dialer).DialContext, "dns.google.com:53"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}
func TestNewResolverDoTAddress(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverTLSTransport(new(tls.Dialer).DialContext, "8.8.8.8:853"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverTLSTransport(new(tls.Dialer).DialContext, "8.8.8.8:853"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}
func TestNewResolverDoTDomain(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverTLSTransport(new(tls.Dialer).DialContext, "dns.google.com:853"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverTLSTransport(new(tls.Dialer).DialContext, "dns.google.com:853"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}
func TestNewResolverDoH(t *testing.T) {
reso := netxlite.NewSerialResolver(
netxlite.NewDNSOverHTTPSTransport(http.DefaultClient, "https://cloudflare-dns.com/dns-query"))
reso := netxlite.NewUnwrappedSerialResolver(
netxlite.NewUnwrappedDNSOverHTTPSTransport(http.DefaultClient, "https://cloudflare-dns.com/dns-query"))
testresolverquick(t, reso)
testresolverquickidna(t, reso)
}