lib/connections: Add QUIC protocol support (fixes #5377) (#5737)

go.mod

@@ -2,10 +2,12 @@ module github.com/syncthing/syncthing
 
 require (
 	github.com/AudriusButkevicius/go-nat-pmp v0.0.0-20160522074932-452c97607362
+	github.com/AudriusButkevicius/pfilter v0.0.0-20190525131515-730b0de4d4de
 	github.com/AudriusButkevicius/recli v0.0.5
 	github.com/bkaradzic/go-lz4 v0.0.0-20160924222819-7224d8d8f27e
 	github.com/calmh/du v1.0.1
 	github.com/calmh/xdr v1.1.0
+	github.com/ccding/go-stun v0.0.0-20180726100737-be486d185f3d
 	github.com/chmduquesne/rollinghash v0.0.0-20180912150627-a60f8e7142b5
 	github.com/d4l3k/messagediff v1.2.1
 	github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568
@@ -17,10 +19,9 @@ require (
 	github.com/kballard/go-shellquote v0.0.0-20170619183022-cd60e84ee657
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/lib/pq v1.1.1
+	github.com/lucas-clemente/quic-go v0.11.1
 	github.com/mattn/go-isatty v0.0.7
 	github.com/minio/sha256-simd v0.0.0-20190117184323-cc1980cb0338
-	github.com/onsi/ginkgo v0.0.0-20171221013426-6c46eb8334b3 // indirect
-	github.com/onsi/gomega v0.0.0-20171227184521-ba3724c94e4d // indirect
 	github.com/oschwald/geoip2-golang v1.3.0
 	github.com/oschwald/maxminddb-golang v0.0.0-20170901134056-26fe5ace1c70 // indirect
 	github.com/petermattis/goid v0.0.0-20170816195418-3db12ebb2a59 // indirect
@@ -35,7 +36,7 @@ require (
 	github.com/vitrun/qart v0.0.0-20160531060029-bf64b92db6b0
 	golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
 	golang.org/x/net v0.0.0-20181201002055-351d144fa1fc
-	golang.org/x/text v0.0.0-20171227012246-e19ae1496984
+	golang.org/x/text v0.3.0
 	golang.org/x/time v0.0.0-20170927054726-6dc17368e09b
 	gopkg.in/asn1-ber.v1 v1.0.0-20170511165959-379148ca0225 // indirect
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect