Merge pull request #653 from micro/tunnel

Add back the old tunnel interface

.travis.yml

@@ -1,6 +1,5 @@
 language: go
 go:
-- 1.11.x
 - 1.12.x
 env:
   - GO111MODULE=on

go.mod

@@ -3,8 +3,9 @@ module github.com/micro/go-micro
 go 1.12
 
 require (
-	cloud.google.com/go v0.41.0 // indirect
+	cloud.google.com/go v0.43.0 // indirect
 	github.com/BurntSushi/toml v0.3.1
+	github.com/Microsoft/go-winio v0.4.14 // indirect
 	github.com/armon/circbuf v0.0.0-20190214190532-5111143e8da2 // indirect
 	github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878 // indirect
 	github.com/armon/go-radix v1.0.0 // indirect
@@ -14,17 +15,16 @@ require (
 	github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc // indirect
 	github.com/forestgiant/sliceutil v0.0.0-20160425183142-94783f95db6c
 	github.com/fsnotify/fsnotify v1.4.7
-	github.com/fsouza/go-dockerclient v1.4.1
+	github.com/fsouza/go-dockerclient v1.4.2
 	github.com/ghodss/yaml v1.0.0
-	github.com/gliderlabs/ssh v0.2.2 // indirect
 	github.com/go-kit/kit v0.9.0 // indirect
 	github.com/go-log/log v0.1.0
 	github.com/go-playground/locales v0.12.1 // indirect
 	github.com/go-playground/universal-translator v0.16.0 // indirect
 	github.com/golang/protobuf v1.3.2
+	github.com/google/pprof v0.0.0-20190723021845-34ac40c74b70 // indirect
 	github.com/google/uuid v1.1.1
-	github.com/gorilla/handlers v1.4.1
+	github.com/gorilla/handlers v1.4.2
-	github.com/gorilla/mux v1.7.3 // indirect
 	github.com/gorilla/websocket v1.4.0
 	github.com/hashicorp/consul/api v1.1.0
 	github.com/hashicorp/go-immutable-radix v1.1.0 // indirect
@@ -33,19 +33,18 @@ require (
 	github.com/hashicorp/go-rootcerts v1.0.1 // indirect
 	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
 	github.com/hashicorp/go-version v1.2.0 // indirect
+	github.com/hashicorp/golang-lru v0.5.3 // indirect
 	github.com/hashicorp/hcl v1.0.0
 	github.com/hashicorp/mdns v1.0.1 // indirect
 	github.com/hashicorp/memberlist v0.1.4
 	github.com/hashicorp/serf v0.8.3 // indirect
 	github.com/imdario/mergo v0.3.7
 	github.com/joncalhoun/qson v0.0.0-20170526102502-8a9cab3a62b1
-	github.com/json-iterator/go v1.1.6
+	github.com/json-iterator/go v1.1.7
-	github.com/kevinburke/ssh_config v0.0.0-20190630040420-2e50c441276c // indirect
 	github.com/kisielk/errcheck v1.2.0 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/kr/pty v1.1.8 // indirect
 	github.com/leodido/go-urn v1.1.0 // indirect
-	github.com/lucas-clemente/quic-go v0.7.1-0.20190710050138-1441923ab031
+	github.com/lucas-clemente/quic-go v0.12.0
 	github.com/mattn/go-colorable v0.1.2 // indirect
 	github.com/mattn/go-runewidth v0.0.4 // indirect
 	github.com/micro/cli v0.2.0
@@ -53,6 +52,9 @@ require (
 	github.com/miekg/dns v1.1.15 // indirect
 	github.com/mitchellh/gox v1.0.1 // indirect
 	github.com/mitchellh/hashstructure v1.0.0
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect
 	github.com/nats-io/nats.go v1.8.1
 	github.com/nats-io/nkeys v0.1.0 // indirect
 	github.com/nlopes/slack v0.5.0
@@ -61,24 +63,18 @@ require (
 	github.com/onsi/gomega v1.5.0 // indirect
 	github.com/pkg/errors v0.8.1
 	github.com/posener/complete v1.2.1 // indirect
-	github.com/prometheus/common v0.6.0 // indirect
+	github.com/prometheus/client_golang v1.1.0 // indirect
-	github.com/prometheus/procfs v0.0.3 // indirect
 	github.com/sirupsen/logrus v1.4.2 // indirect
-	github.com/stretchr/objx v0.2.0 // indirect
 	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
 	golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4
-	golang.org/x/exp v0.0.0-20190627132806-fd42eb6b336f // indirect
+	golang.org/x/mobile v0.0.0-20190806162312-597adff16ade // indirect
-	golang.org/x/image v0.0.0-20190703141733-d6a02ce849c9 // indirect
+	golang.org/x/net v0.0.0-20190724013045-ca1201d0de80
-	golang.org/x/mobile v0.0.0-20190711165009-e47acb2ca7f9 // indirect
+	golang.org/x/sys v0.0.0-20190804053845-51ab0e2deafa // indirect
-	golang.org/x/mod v0.1.0 // indirect
+	golang.org/x/tools v0.0.0-20190807201305-8be58fba6352 // indirect
-	golang.org/x/net v0.0.0-20190628185345-da137c7871d7
+	google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64 // indirect
-	golang.org/x/sys v0.0.0-20190710143415-6ec70d6a5542 // indirect
+	google.golang.org/grpc v1.22.1
-	golang.org/x/tools v0.0.0-20190711191110-9a621aea19f8 // indirect
+	gopkg.in/go-playground/validator.v9 v9.29.1
-	google.golang.org/genproto v0.0.0-20190708153700-3bdd9d9f5532 // indirect
+	gopkg.in/src-d/go-git.v4 v4.13.1
-	google.golang.org/grpc v1.22.0
-	gopkg.in/go-playground/validator.v9 v9.29.0
-	gopkg.in/src-d/go-billy.v4 v4.3.1 // indirect
-	gopkg.in/src-d/go-git.v4 v4.12.0
 	gopkg.in/telegram-bot-api.v4 v4.6.4
-	honnef.co/go/tools v0.0.0-20190614002413-cb51c254f01b // indirect
+	honnef.co/go/tools v0.0.1-2019.2.2 // indirect
 )

go.sum

@@ -3,15 +3,21 @@ cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
 cloud.google.com/go v0.40.0/go.mod h1:Tk58MuI9rbLMKlAjeO/bDnteAx7tX2gJIXw4T5Jwlro=
 cloud.google.com/go v0.41.0/go.mod h1:OauMR7DV8fzvZIl2qg6rkaIhD/vmgk4iwEw/h6ercmg=
+cloud.google.com/go v0.43.0/go.mod h1:BOSR3VbTLkk6FDC/TcffxP4NF/FFBGA5ku+jvKOP7pg=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/Microsoft/go-winio v0.4.12/go.mod h1:VhR8bwka0BXejwEJY73c50VrPtXAaKcyvVC4A4RozmA=
+github.com/Microsoft/go-winio v0.4.13/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
+github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
+github.com/Microsoft/hcsshim v0.8.6/go.mod h1:Op3hHsoHPAvb6lceZHDtd9OkTew38wNoXnJs8iY7rUg=
 github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/ghQa61ZWa/C2Aw3RkjiTBOix7dkqa1VLIs=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/circbuf v0.0.0-20190214190532-5111143e8da2/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
@@ -26,6 +32,7 @@ github.com/beevik/ntp v0.2.0 h1:sGsd+kAXzT0bfVfzJfce04g+dSRfrs+tbQW8lweuYgw=
 github.com/beevik/ntp v0.2.0/go.mod h1:hIHWr+l3+/clUnF44zdK+CWW7fO8dR5cIylAQ76NRpg=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bitly/go-simplejson v0.5.0 h1:6IH+V8/tVMab511d5bn4M7EwGXZf9Hj6i2xSwkNEM+Y=
 github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
@@ -43,8 +50,12 @@ github.com/containerd/continuity v0.0.0-20190426062206-aaeac12a7ffc/go.mod h1:GL
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/docker/distribution v2.7.1+incompatible h1:a5mlkVzth6W5A4fOsS3D2EO5BUmsJpcB+cRlLU7cSug=
+github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/docker v0.7.3-0.20190309235953-33c3200e0d16 h1:dmUn0SuGx7unKFwxyeQ/oLUHhEfZosEDrpmYM+6MTuc=
 github.com/docker/docker v0.7.3-0.20190309235953-33c3200e0d16/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v1.4.2-0.20190710153559-aa8249ae1b8b h1:+Ga+YpCDpcY1fln6GI0fiiirpqHGcob5/Vk3oKNuGdU=
+github.com/docker/docker v1.4.2-0.20190710153559-aa8249ae1b8b/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.4.0 h1:El9xVISelRB7BuFusrZozjnkIM5YnzCViNKohAFqRJQ=
 github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5XhDvyHbTtUxmeec=
 github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
@@ -61,6 +72,8 @@ github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsouza/go-dockerclient v1.4.1 h1:W7wuJ3IB48WYZv/UBk9dCTIb9oX805+L9KIm65HcUYs=
 github.com/fsouza/go-dockerclient v1.4.1/go.mod h1:PUNHxbowDqRXfRgZqMz1OeGtbWC6VKyZvJ99hDjB0qs=
+github.com/fsouza/go-dockerclient v1.4.2 h1:dl6GfIWS5Qn4C6OfSnnoe6YuOV8lvKAE8W/YD1Q7udo=
+github.com/fsouza/go-dockerclient v1.4.2/go.mod h1:COunfLZrsdwX/j3YVDAG8gIw3KutrI0x1+vGEJ5zxdI=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/gliderlabs/ssh v0.1.1/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
@@ -96,9 +109,11 @@ github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
 github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
+github.com/google/pprof v0.0.0-20190723021845-34ac40c74b70/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
@@ -108,6 +123,8 @@ github.com/gorilla/handlers v1.4.0 h1:XulKRWSQK5uChr4pEgSE4Tc/OcmnU9GJuSwdog/tZs
 github.com/gorilla/handlers v1.4.0/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
 github.com/gorilla/handlers v1.4.1 h1:BHvcRGJe/TrL+OqFxoKQGddTgeibiOjaBssV5a/N9sw=
 github.com/gorilla/handlers v1.4.1/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
+github.com/gorilla/handlers v1.4.2 h1:0QniY0USkHQ1RGCLfKxeNHK9bkDHGRYGNDFBCS+YARg=
+github.com/gorilla/handlers v1.4.2/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
 github.com/gorilla/mux v1.7.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
@@ -150,6 +167,8 @@ github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCO
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1 h1:0hERBMJE1eitiLkihrMvRVBYAkpHzc/J3QdDN+dAcgU=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/hashicorp/golang-lru v0.5.3 h1:YPkqC67at8FYaadspW/6uE0COsBxS2656RLEr8Bppgk=
+github.com/hashicorp/golang-lru v0.5.3/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hashicorp/logutils v1.0.0/go.mod h1:QIAnNjmIWmVIIkWDTG1z5v++HQmx9WQRO+LraFDTW64=
@@ -174,12 +193,16 @@ github.com/joncalhoun/qson v0.0.0-20170526102502-8a9cab3a62b1 h1:lnrOS18wZBYrzdD
 github.com/joncalhoun/qson v0.0.0-20170526102502-8a9cab3a62b1/go.mod h1:DFXrEwSRX0p/aSvxE21319menCBFeQO0jXpRj7LEZUA=
 github.com/json-iterator/go v1.1.6 h1:MrUvLMLTMxbqFJ9kzlvat/rYZqZnW3u4wkLzWTaFwKs=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
+github.com/json-iterator/go v1.1.7 h1:KfgG9LzI+pYjr4xvmz/5H4FXjokeP+rlHLhv3iH62Fo=
+github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e h1:RgQk53JHp/Cjunrr1WlsXSZpqXn+uREuHvUVcK82CV8=
 github.com/kevinburke/ssh_config v0.0.0-20180830205328-81db2a75821e/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
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 github.com/kevinburke/ssh_config v0.0.0-20190630040420-2e50c441276c/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
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@@ -197,6 +220,8 @@ github.com/lucas-clemente/quic-go v0.7.1-0.20190710050138-1441923ab031 h1:wjcGvg
 github.com/lucas-clemente/quic-go v0.7.1-0.20190710050138-1441923ab031/go.mod h1:lb5aAxL68VvhZ00e7yYuQVK/9FLggtYy4qo7oI5qzqA=
 github.com/lucas-clemente/quic-go v0.11.2 h1:Mop0ac3zALaBR3wGs6j8OYe/tcFvFsxTUFMkE/7yUOI=
 github.com/lucas-clemente/quic-go v0.11.2/go.mod h1:PpMmPfPKO9nKJ/psF49ESTAGQSdfXxlg1otPbEB2nOw=
+github.com/lucas-clemente/quic-go v0.12.0 h1:dYHUyB50gEQlK3KqytmNySzuyzAcaQ3iuI2ZReAfVrE=
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 github.com/marten-seemann/qtls v0.2.3 h1:0yWJ43C62LsZt08vuQJDK1uC1czUc3FJeCLPoNAI4vA=
 github.com/marten-seemann/qtls v0.2.3/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
@@ -204,6 +229,8 @@ github.com/marten-seemann/qtls v0.2.4 h1:mCJ6i1jAqcsm9XODrSGvXECodoAb1STta+TkxJC
 github.com/marten-seemann/qtls v0.2.4/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
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 github.com/marten-seemann/qtls v0.3.1/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
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@@ -241,11 +268,14 @@ github.com/mitchellh/iochan v1.0.0/go.mod h1:JwYml1nuB7xOzsp52dPpHFffvOCDupsG0Qu
 github.com/mitchellh/mapstructure v0.0.0-20160808181253-ca63d7c062ee/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
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@@ -282,6 +312,7 @@ github.com/posener/complete v1.2.1/go.mod h1:6gapUrK/U1TAN7ciCoNRIdVC5sbdBTUh1DK
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
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@@ -301,6 +332,7 @@ github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAm
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@@ -339,9 +371,11 @@ golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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@@ -350,6 +384,7 @@ golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
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 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
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@@ -375,6 +410,8 @@ golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwL
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@@ -408,6 +445,10 @@ golang.org/x/sys v0.0.0-20190621062556-bf70e4678053/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -429,9 +470,14 @@ golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBn
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@@ -452,12 +498,17 @@ google.golang.org/genproto v0.0.0-20190620144150-6af8c5fc6601/go.mod h1:z3L6/3dT
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 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.22.0 h1:J0UbZOIrCAl+fpTOf8YLs4dJo8L/owV4LYVtAXQoPkw=
 google.golang.org/grpc v1.22.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.22.1 h1:/7cs52RnTJmD43s3uxzlq2U7nqVTd/37viQwMrMNlOM=
+google.golang.org/grpc v1.22.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -465,18 +516,24 @@ gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/go-playground/validator.v9 v9.29.0 h1:5ofssLNYgAA/inWn6rTZ4juWpRJUwEnXc1LG2IeXwgQ=
 gopkg.in/go-playground/validator.v9 v9.29.0/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
+gopkg.in/go-playground/validator.v9 v9.29.1 h1:SvGtYmN60a5CVKTOzMSyfzWDeZRxRuGvRQyEAKbw1xc=
+gopkg.in/go-playground/validator.v9 v9.29.1/go.mod h1:+c9/zcJMFNgbLvly1L1V+PpxWdVbfP1avr/N00E2vyQ=
 gopkg.in/src-d/go-billy.v4 v4.2.1 h1:omN5CrMrMcQ+4I8bJ0wEhOBPanIRWzFC953IiXKdYzo=
 gopkg.in/src-d/go-billy.v4 v4.2.1/go.mod h1:tm33zBoOwxjYHZIE+OV8bxTWFMJLrconzFMd38aARFk=
 gopkg.in/src-d/go-billy.v4 v4.3.0 h1:KtlZ4c1OWbIs4jCv5ZXrTqG8EQocr0g/d4DjNg70aek=
 gopkg.in/src-d/go-billy.v4 v4.3.0/go.mod h1:tm33zBoOwxjYHZIE+OV8bxTWFMJLrconzFMd38aARFk=
 gopkg.in/src-d/go-billy.v4 v4.3.1 h1:OkK1DmefDy1Z6Veu82wdNj/cLpYORhdX4qdaYCPwc7s=
 gopkg.in/src-d/go-billy.v4 v4.3.1/go.mod h1:tm33zBoOwxjYHZIE+OV8bxTWFMJLrconzFMd38aARFk=
+gopkg.in/src-d/go-billy.v4 v4.3.2 h1:0SQA1pRztfTFx2miS8sA97XvooFeNOmvUenF4o0EcVg=
+gopkg.in/src-d/go-billy.v4 v4.3.2/go.mod h1:nDjArDMp+XMs1aFAESLRjfGSgfvoYN0hDfzEk0GjC98=
 gopkg.in/src-d/go-git-fixtures.v3 v3.1.1/go.mod h1:dLBcvytrw/TYZsNTWCnkNF2DSIlzWYqTe3rJR56Ac7g=
 gopkg.in/src-d/go-git-fixtures.v3 v3.5.0/go.mod h1:dLBcvytrw/TYZsNTWCnkNF2DSIlzWYqTe3rJR56Ac7g=
 gopkg.in/src-d/go-git.v4 v4.11.0 h1:cJwWgJ0DXifrNrXM6RGN1Y2yR60Rr1zQ9Q5DX5S9qgU=
 gopkg.in/src-d/go-git.v4 v4.11.0/go.mod h1:Vtut8izDyrM8BUVQnzJ+YvmNcem2J89EmfZYCkLokZk=
 gopkg.in/src-d/go-git.v4 v4.12.0 h1:CKgvBCJCcdfNnyXPYI4Cp8PaDDAmAPEN0CtfEdEAbd8=
 gopkg.in/src-d/go-git.v4 v4.12.0/go.mod h1:zjlNnzc1Wjn43v3Mtii7RVxiReNP0fIu9npcXKzuNp4=
+gopkg.in/src-d/go-git.v4 v4.13.1 h1:SRtFyV8Kxc0UP7aCHcijOMQGPxHSmMOPrzulQWolkYE=
+gopkg.in/src-d/go-git.v4 v4.13.1/go.mod h1:nx5NYcxdKxq5fpltdHnPa2Exj4Sx0EclMWZQbYDu2z8=
 gopkg.in/telegram-bot-api.v4 v4.6.4 h1:hpHWhzn4jTCsAJZZ2loNKfy2QWyPDRJVl3aTFXeMW8g=
 gopkg.in/telegram-bot-api.v4 v4.6.4/go.mod h1:5DpGO5dbumb40px+dXcwCpcjmeHNYLpk0bp3XRNvWDM=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
@@ -491,4 +548,5 @@ honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190614002413-cb51c254f01b/go.mod h1:JlmFZigtG9vBVR3QGIQ9g/Usz4BzH+Xm6Z8iHQWRYUw=
+honnef.co/go/tools v0.0.1-2019.2.2/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=

tunnel/default.go

@@ -1,79 +1,443 @@
 package tunnel
 
 import (
+	"crypto/sha256"
+	"errors"
+	"fmt"
 	"sync"
 
+	"github.com/google/uuid"
 	"github.com/micro/go-micro/transport"
+	"github.com/micro/go-micro/util/log"
 )
 
+// tun represents a network tunnel
 type tun struct {
+	options Options
+
 	sync.RWMutex
-	tr        transport.Transport
+
-	options   Options
+	// to indicate if we're connected or not
 	connected bool
-	closed    chan bool
+
+	// the send channel for all messages
+	send chan *message
+
+	// close channel
+	closed chan bool
+
+	// a map of sockets based on Micro-Tunnel-Id
+	sockets map[string]*socket
+
+	// outbound links
+	links map[string]*link
+
+	// listener
+	listener transport.Listener
 }
 
-func newTunnel(opts ...Option) Tunnel {
+type link struct {
-	// initialize default options
+	transport.Socket
-	options := DefaultOptions()
+	id string
+}
 
+// create new tunnel on top of a link
+func newTunnel(opts ...Option) *tun {
+	options := DefaultOptions()
 	for _, o := range opts {
 		o(&options)
 	}
 
-	// tunnel transport
+	return &tun{
-	tr := newTransport()
-
-	t := &tun{
-		tr:      tr,
 		options: options,
+		send:    make(chan *message, 128),
 		closed:  make(chan bool),
+		sockets: make(map[string]*socket),
+		links:   make(map[string]*link),
+	}
+}
+
+// getSocket returns a socket from the internal socket map.
+// It does this based on the Micro-Tunnel-Id and Micro-Tunnel-Session
+func (t *tun) getSocket(id, session string) (*socket, bool) {
+	// get the socket
+	t.RLock()
+	s, ok := t.sockets[id+session]
+	t.RUnlock()
+	return s, ok
+}
+
+// newSocket creates a new socket and saves it
+func (t *tun) newSocket(id, session string) (*socket, bool) {
+	// hash the id
+	h := sha256.New()
+	h.Write([]byte(id))
+	id = fmt.Sprintf("%x", h.Sum(nil))
+
+	// new socket
+	s := &socket{
+		id:      id,
+		session: session,
+		closed:  make(chan bool),
+		recv:    make(chan *message, 128),
+		send:    t.send,
+		wait:    make(chan bool),
 	}
 
-	return t
+	// save socket
+	t.Lock()
+	_, ok := t.sockets[id+session]
+	if ok {
+		// socket already exists
+		t.Unlock()
+		return nil, false
+	}
+	t.sockets[id+session] = s
+	t.Unlock()
+
+	// return socket
+	return s, true
 }
 
-// Id returns tunnel id
+// TODO: use tunnel id as part of the session
-func (t *tun) Id() string {
+func (t *tun) newSession() string {
-	return t.options.Id
+	return uuid.New().String()
 }
 
-// Options returns tunnel options
+// process outgoing messages sent by all local sockets
-func (t *tun) Options() Options {
+func (t *tun) process() {
-	return t.options
+	// manage the send buffer
+	// all pseudo sockets throw everything down this
+	for {
+		select {
+		case msg := <-t.send:
+			nmsg := &transport.Message{
+				Header: msg.data.Header,
+				Body:   msg.data.Body,
+			}
+
+			// set the tunnel id on the outgoing message
+			nmsg.Header["Micro-Tunnel-Id"] = msg.id
+
+			// set the session id
+			nmsg.Header["Micro-Tunnel-Session"] = msg.session
+
+			// send the message via the interface
+			t.RLock()
+			for _, link := range t.links {
+				link.Send(nmsg)
+			}
+			t.RUnlock()
+		case <-t.closed:
+			return
+		}
+	}
 }
 
-// Address returns tunnel listen address
+// process incoming messages
-func (t *tun) Address() string {
+func (t *tun) listen(link transport.Socket, listener bool) {
-	return t.options.Address
+	for {
+		// process anything via the net interface
+		msg := new(transport.Message)
+		err := link.Recv(msg)
+		if err != nil {
+			return
+		}
+
+		// first check Micro-Tunnel
+		switch msg.Header["Micro-Tunnel"] {
+		case "connect":
+			// assuming new connection
+			// TODO: do something with this
+			continue
+		case "close":
+			// assuming connection closed
+			// TODO: do something with this
+			continue
+		}
+
+		// the tunnel id
+		id := msg.Header["Micro-Tunnel-Id"]
+
+		// the session id
+		session := msg.Header["Micro-Tunnel-Session"]
+
+		// if the session id is blank there's nothing we can do
+		// TODO: check this is the case, is there any reason
+		// why we'd have a blank session? Is the tunnel
+		// used for some other purpose?
+		if len(id) == 0 || len(session) == 0 {
+			continue
+		}
+
+		var s *socket
+		var exists bool
+
+		// if its a local listener then we use that as the session id
+		// e.g we're using a loopback connecting to ourselves
+		if listener {
+			s, exists = t.getSocket(id, "listener")
+		} else {
+			// get the socket based on the tunnel id and session
+			// this could be something we dialed in which case
+			// we have a session for it otherwise its a listener
+			s, exists = t.getSocket(id, session)
+			if !exists {
+				// try get it based on just the tunnel id
+				// the assumption here is that a listener
+				// has no session but its set a listener session
+				s, exists = t.getSocket(id, "listener")
+			}
+		}
+
+		// no socket in existence
+		if !exists {
+			// drop it, we don't care about
+			// messages we don't know about
+			continue
+		}
+
+		// is the socket closed?
+		select {
+		case <-s.closed:
+			// closed
+			delete(t.sockets, id)
+			continue
+		default:
+			// process
+		}
+
+		// is the socket new?
+		select {
+		// if its new the socket is actually blocked waiting
+		// for a connection. so we check if its waiting.
+		case <-s.wait:
+		// if its waiting e.g its new then we close it
+		default:
+			// set remote address of the socket
+			s.remote = msg.Header["Remote"]
+			close(s.wait)
+		}
+
+		// construct a new transport message
+		tmsg := &transport.Message{
+			Header: msg.Header,
+			Body:   msg.Body,
+		}
+
+		// construct the internal message
+		imsg := &message{
+			id:      id,
+			session: session,
+			data:    tmsg,
+		}
+
+		// append to recv backlog
+		// we don't block if we can't pass it on
+		select {
+		case s.recv <- imsg:
+		default:
+		}
+	}
 }
 
-// Transport returns tunnel client transport
+func (t *tun) connect() error {
-func (t *tun) Transport() transport.Transport {
+	l, err := t.options.Transport.Listen(t.options.Address)
-	return t.tr
+	if err != nil {
-}
+		return err
+	}
+
+	// save the listener
+	t.listener = l
+
+	go func() {
+		// accept inbound connections
+		err := l.Accept(func(sock transport.Socket) {
+			// save the link
+			id := uuid.New().String()
+			t.Lock()
+			t.links[id] = &link{
+				Socket: sock,
+				id:     id,
+			}
+			t.Unlock()
+
+			// delete the link
+			defer func() {
+				t.Lock()
+				delete(t.links, id)
+				t.Unlock()
+			}()
+
+			// listen for inbound messages
+			t.listen(sock, true)
+		})
+
+		t.Lock()
+		defer t.Unlock()
+
+		// still connected but the tunnel died
+		if err != nil && t.connected {
+			log.Logf("Tunnel listener died: %v", err)
+		}
+	}()
+
+	for _, node := range t.options.Nodes {
+		c, err := t.options.Transport.Dial(node)
+		if err != nil {
+			log.Debugf("Tunnel failed to connect to %s: %v", node, err)
+			continue
+		}
+
+		err = c.Send(&transport.Message{
+			Header: map[string]string{
+				"Micro-Tunnel": "connect",
+			},
+		})
+
+		if err != nil {
+			continue
+		}
+
+		// process incoming messages
+		go t.listen(c, false)
+
+		// save the link
+		id := uuid.New().String()
+		t.links[id] = &link{
+			Socket: c,
+			id:     id,
+		}
+	}
+
+	// process outbound messages to be sent
+	// process sends to all links
+	go t.process()
 
-// Connect connects establishes point to point tunnel
-func (t *tun) Connect() error {
 	return nil
 }
 
-// Close closes the tunnel
+func (t *tun) close() error {
+	// close all the links
+	for id, link := range t.links {
+		link.Send(&transport.Message{
+			Header: map[string]string{
+				"Micro-Tunnel": "close",
+			},
+		})
+		link.Close()
+		delete(t.links, id)
+	}
+
+	// close the listener
+	return t.listener.Close()
+}
+
+// Close the tunnel
 func (t *tun) Close() error {
-	return nil
+	t.Lock()
-}
+	defer t.Unlock()
+
+	if !t.connected {
+		return nil
+	}
 
-// Status returns tunnel status
-func (t *tun) Status() Status {
 	select {
 	case <-t.closed:
-		return Closed
+		return nil
 	default:
-		return Connected
+		// close all the sockets
+		for _, s := range t.sockets {
+			s.Close()
+		}
+		// close the connection
+		close(t.closed)
+		t.connected = false
+
+		// send a close message
+		// we don't close the link
+		// just the tunnel
+		return t.close()
 	}
+
+	return nil
 }
 
-func (t *tun) String() string {
+// Connect the tunnel
-	return "micro"
+func (t *tun) Connect() error {
+	t.Lock()
+	defer t.Unlock()
+
+	// already connected
+	if t.connected {
+		return nil
+	}
+
+	// send the connect message
+	if err := t.connect(); err != nil {
+		return err
+	}
+
+	// set as connected
+	t.connected = true
+	// create new close channel
+	t.closed = make(chan bool)
+
+	return nil
+}
+
+func (t *tun) Init(opts ...Option) error {
+	for _, o := range opts {
+		o(&t.options)
+	}
+	return nil
+}
+
+// Dial an address
+func (t *tun) Dial(addr string) (Conn, error) {
+	c, ok := t.newSocket(addr, t.newSession())
+	if !ok {
+		return nil, errors.New("error dialing " + addr)
+	}
+	// set remote
+	c.remote = addr
+	// set local
+	c.local = "local"
+
+	return c, nil
+}
+
+// Accept a connection on the address
+func (t *tun) Listen(addr string) (Listener, error) {
+	// create a new socket by hashing the address
+	c, ok := t.newSocket(addr, "listener")
+	if !ok {
+		return nil, errors.New("already listening on " + addr)
+	}
+
+	// set remote. it will be replaced by the first message received
+	c.remote = "remote"
+	// set local
+	c.local = addr
+
+	tl := &tunListener{
+		addr: addr,
+		// the accept channel
+		accept: make(chan *socket, 128),
+		// the channel to close
+		closed: make(chan bool),
+		// the connection
+		conn: c,
+		// the listener socket
+		socket: c,
+	}
+
+	// this kicks off the internal message processor
+	// for the listener so it can create pseudo sockets
+	// per session if they do not exist or pass messages
+	// to the existign sessions
+	go tl.process()
+
+	// return the listener
+	return tl, nil
 }

tunnel/listener.go

@@ -0,0 +1,101 @@
+package tunnel
+
+import (
+	"io"
+)
+
+type tunListener struct {
+	// address of the listener
+	addr string
+	// the accept channel
+	accept chan *socket
+	// the channel to close
+	closed chan bool
+	// the connection
+	conn Conn
+	// the listener socket
+	socket *socket
+}
+
+func (t *tunListener) process() {
+	// our connection map for session
+	conns := make(map[string]*socket)
+
+	for {
+		select {
+		case <-t.closed:
+			return
+		// receive a new message
+		case m := <-t.socket.recv:
+			// get a socket
+			sock, ok := conns[m.session]
+			if !ok {
+				// create a new socket session
+				sock = &socket{
+					// our tunnel id
+					id: m.id,
+					// the session id
+					session: m.session,
+					// close chan
+					closed: make(chan bool),
+					// recv called by the acceptor
+					recv: make(chan *message, 128),
+					// use the internal send buffer
+					send: t.socket.send,
+					// wait
+					wait: make(chan bool),
+				}
+
+				// first message
+				sock.recv <- m
+
+				// save the socket
+				conns[m.session] = sock
+
+				// send to accept chan
+				select {
+				case <-t.closed:
+					return
+				case t.accept <- sock:
+				}
+			}
+
+			// send this to the accept chan
+			select {
+			case <-sock.closed:
+				delete(conns, m.session)
+			case sock.recv <- m:
+			}
+		}
+	}
+}
+
+func (t *tunListener) Addr() string {
+	return t.addr
+}
+
+func (t *tunListener) Close() error {
+	select {
+	case <-t.closed:
+		return nil
+	default:
+		close(t.closed)
+	}
+	return nil
+}
+
+// Everytime accept is called we essentially block till we get a new connection
+func (t *tunListener) Accept() (Conn, error) {
+	select {
+	// if the socket is closed return
+	case <-t.closed:
+		return nil, io.EOF
+	// wait for a new connection
+	case c, ok := <-t.accept:
+		if !ok {
+			return nil, io.EOF
+		}
+		return c, nil
+	}
+	return nil, nil
+}

tunnel/options.go

@@ -3,6 +3,7 @@ package tunnel
 import (
 	"github.com/google/uuid"
 	"github.com/micro/go-micro/transport"
+	"github.com/micro/go-micro/transport/quic"
 )
 
 var (
@@ -39,7 +40,7 @@ func Address(a string) Option {
 }
 
 // Nodes specify remote network nodes
-func Nodes(n []string) Option {
+func Nodes(n ...string) Option {
 	return func(o *Options) {
 		o.Nodes = n
 	}
@@ -57,7 +58,6 @@ func DefaultOptions() Options {
 	return Options{
 		Id:        uuid.New().String(),
 		Address:   DefaultAddress,
-		Nodes:     make([]string, 0),
+		Transport: quic.NewTransport(),
-		Transport: transport.DefaultTransport,
 	}
 }

tunnel/socket.go

@@ -1,25 +1,90 @@
 package tunnel
 
-import "github.com/micro/go-micro/transport"
+import (
+	"errors"
 
-type tunSocket struct{}
+	"github.com/micro/go-micro/transport"
+)
 
-func (s *tunSocket) Recv(m *transport.Message) error {
+// socket is our pseudo socket for transport.Socket
+type socket struct {
+	// socket id based on Micro-Tunnel
+	id string
+	// the session id based on Micro.Tunnel-Session
+	session string
+	// closed
+	closed chan bool
+	// remote addr
+	remote string
+	// local addr
+	local string
+	// send chan
+	send chan *message
+	// recv chan
+	recv chan *message
+	// wait until we have a connection
+	wait chan bool
+}
+
+// message is sent over the send channel
+type message struct {
+	// tunnel id
+	id string
+	// the session id
+	session string
+	// transport data
+	data *transport.Message
+}
+
+func (s *socket) Remote() string {
+	return s.remote
+}
+
+func (s *socket) Local() string {
+	return s.local
+}
+
+func (s *socket) Id() string {
+	return s.id
+}
+
+func (s *socket) Session() string {
+	return s.session
+}
+
+func (s *socket) Send(m *transport.Message) error {
+	select {
+	case <-s.closed:
+		return errors.New("socket is closed")
+	default:
+		// no op
+	}
+	// append to backlog
+	s.send <- &message{id: s.id, session: s.session, data: m}
 	return nil
 }
 
-func (s *tunSocket) Send(m *transport.Message) error {
+func (s *socket) Recv(m *transport.Message) error {
+	select {
+	case <-s.closed:
+		return errors.New("socket is closed")
+	default:
+		// no op
+	}
+	// recv from backlog
+	msg := <-s.recv
+	// set message
+	*m = *msg.data
+	// return nil
 	return nil
 }
 
-func (s *tunSocket) Close() error {
+func (s *socket) Close() error {
+	select {
+	case <-s.closed:
+		// no op
+	default:
+		close(s.closed)
+	}
 	return nil
 }
-
-func (s *tunSocket) Local() string {
-	return ""
-}
-
-func (s *tunSocket) Remote() string {
-	return ""
-}

tunnel/transport.go

@@ -1,51 +0,0 @@
-package tunnel
-
-import "github.com/micro/go-micro/transport"
-
-type tunTransport struct {
-	options transport.Options
-}
-
-type tunClient struct {
-	*tunSocket
-	options transport.DialOptions
-}
-
-type tunListener struct {
-	conn chan *tunSocket
-}
-
-func newTransport(opts ...transport.Option) transport.Transport {
-	var options transport.Options
-
-	for _, o := range opts {
-		o(&options)
-	}
-
-	return &tunTransport{
-		options: options,
-	}
-}
-
-func (t *tunTransport) Init(opts ...transport.Option) error {
-	for _, o := range opts {
-		o(&t.options)
-	}
-	return nil
-}
-
-func (t *tunTransport) Options() transport.Options {
-	return t.options
-}
-
-func (t *tunTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
-	return nil, nil
-}
-
-func (t *tunTransport) Listen(addr string, opts ...transport.ListenOption) (transport.Listener, error) {
-	return nil, nil
-}
-
-func (t *tunTransport) String() string {
-	return "micro"
-}

tunnel/transport/listener.go

@@ -0,0 +1,30 @@
+package transport
+
+import (
+	"github.com/micro/go-micro/transport"
+	"github.com/micro/go-micro/tunnel"
+)
+
+type tunListener struct {
+	l tunnel.Listener
+}
+
+func (t *tunListener) Addr() string {
+	return t.l.Addr()
+}
+
+func (t *tunListener) Close() error {
+	return t.l.Close()
+}
+
+func (t *tunListener) Accept(fn func(socket transport.Socket)) error {
+	for {
+		// accept connection
+		c, err := t.l.Accept()
+		if err != nil {
+			return err
+		}
+		// execute the function
+		go fn(c)
+	}
+}

tunnel/transport/transport.go

@@ -0,0 +1,113 @@
+// Package transport provides a tunnel transport
+package transport
+
+import (
+	"context"
+
+	"github.com/micro/go-micro/transport"
+	"github.com/micro/go-micro/tunnel"
+)
+
+type tunTransport struct {
+	options transport.Options
+
+	tunnel tunnel.Tunnel
+}
+
+type tunnelKey struct{}
+
+type transportKey struct{}
+
+func (t *tunTransport) Init(opts ...transport.Option) error {
+	for _, o := range opts {
+		o(&t.options)
+	}
+
+	// close the existing tunnel
+	if t.tunnel != nil {
+		t.tunnel.Close()
+	}
+
+	// get the tunnel
+	tun, ok := t.options.Context.Value(tunnelKey{}).(tunnel.Tunnel)
+	if !ok {
+		tun = tunnel.NewTunnel()
+	}
+
+	// get the transport
+	tr, ok := t.options.Context.Value(transportKey{}).(transport.Transport)
+	if ok {
+		tun.Init(tunnel.Transport(tr))
+	}
+
+	// set the tunnel
+	t.tunnel = tun
+
+	return nil
+}
+
+func (t *tunTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
+	if err := t.tunnel.Connect(); err != nil {
+		return nil, err
+	}
+
+	c, err := t.tunnel.Dial(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	return c, nil
+}
+
+func (t *tunTransport) Listen(addr string, opts ...transport.ListenOption) (transport.Listener, error) {
+	if err := t.tunnel.Connect(); err != nil {
+		return nil, err
+	}
+
+	l, err := t.tunnel.Listen(addr)
+	if err != nil {
+		return nil, err
+	}
+
+	return &tunListener{l}, nil
+}
+
+func (t *tunTransport) Options() transport.Options {
+	return t.options
+}
+
+func (t *tunTransport) String() string {
+	return "tunnel"
+}
+
+// NewTransport honours the initialiser used in
+func NewTransport(opts ...transport.Option) transport.Transport {
+	t := &tunTransport{
+		options: transport.Options{},
+	}
+
+	// initialise
+	t.Init(opts...)
+
+	return t
+}
+
+// WithTransport sets the internal tunnel
+func WithTunnel(t tunnel.Tunnel) transport.Option {
+	return func(o *transport.Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, tunnelKey{}, t)
+	}
+}
+
+// WithTransport sets the internal transport
+func WithTransport(t transport.Transport) transport.Option {
+	return func(o *transport.Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, transportKey{}, t)
+	}
+}

tunnel/tunnel.go

@@ -1,39 +1,44 @@
-// Package tunnel provides micro network tunnelling
+// Package tunnel provides gre network tunnelling
 package tunnel
 
 import (
 	"github.com/micro/go-micro/transport"
 )
 
-// Status is tunnel status
+// Tunnel creates a gre network tunnel on top of a link.
-type Status int
+// It establishes multiple streams using the Micro-Tunnel-Id header
-
+// and Micro-Tunnel-Session header. The tunnel id is a hash of
-const (
+// the address being requested.
-	// Connected means the tunnel is alive
-	Connected Status = iota
-	// Closed meands the tunnel has been disconnected
-	Closed
-)
-
-// Tunnel creates a p2p network tunnel.
 type Tunnel interface {
-	// Id returns tunnel id
+	Init(opts ...Option) error
-	Id() string
-	// Options returns the tunnel options
-	Options() Options
-	// Address returns tunnel address
-	Address() string
-	// Transport to use by tunne clients
-	Transport() transport.Transport
 	// Connect connects the tunnel
 	Connect() error
 	// Close closes the tunnel
 	Close() error
-	// Status returns tunnel status
+	// Dial an endpoint
-	Status() Status
+	Dial(addr string) (Conn, error)
+	// Accept connections
+	Listen(addr string) (Listener, error)
 }
 
-// NewTunnel creates a new tunnel on top of a link
+// The listener provides similar constructs to the transport.Listener
+type Listener interface {
+	Addr() string
+	Close() error
+	Accept() (Conn, error)
+}
+
+// Conn is a connection dialed or accepted which includes the tunnel id and session
+type Conn interface {
+	// Specifies the tunnel id
+	Id() string
+	// The session
+	Session() string
+	// a transport socket
+	transport.Socket
+}
+
+// NewTunnel creates a new tunnel
 func NewTunnel(opts ...Option) Tunnel {
 	return newTunnel(opts...)
 }

tunnel/tunnel_test.go

@@ -0,0 +1,114 @@
+package tunnel
+
+import (
+	"sync"
+	"testing"
+
+	"github.com/micro/go-micro/transport"
+)
+
+// testAccept will accept connections on the transport, create a new link and tunnel on top
+func testAccept(t *testing.T, tun Tunnel, wg *sync.WaitGroup) {
+	// listen on some virtual address
+	tl, err := tun.Listen("test-tunnel")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// accept a connection
+	c, err := tl.Accept()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// get a message
+	for {
+		m := new(transport.Message)
+		if err := c.Recv(m); err != nil {
+			t.Fatal(err)
+		}
+		wg.Done()
+		return
+	}
+}
+
+// testSend will create a new link to an address and then a tunnel on top
+func testSend(t *testing.T, tun Tunnel) {
+	// dial a new session
+	c, err := tun.Dial("test-tunnel")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer c.Close()
+
+	m := transport.Message{
+		Header: map[string]string{
+			"test": "header",
+		},
+	}
+
+	if err := c.Send(&m); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestTunnel(t *testing.T) {
+	// create a new listener
+	tun := NewTunnel(Nodes("127.0.0.1:9096"))
+	err := tun.Connect()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tun.Close()
+
+	var wg sync.WaitGroup
+
+	// start accepting connections
+	wg.Add(1)
+	go testAccept(t, tun, &wg)
+
+	// send a message
+	testSend(t, tun)
+
+	// wait until message is received
+	wg.Wait()
+}
+
+func TestTwoTunnel(t *testing.T) {
+	// create a new tunnel client
+	tunA := NewTunnel(
+		Address("127.0.0.1:9096"),
+		Nodes("127.0.0.1:9097"),
+	)
+
+	// create a new tunnel server
+	tunB := NewTunnel(
+		Address("127.0.0.1:9097"),
+	)
+
+	// start tunB
+	err := tunB.Connect()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tunB.Close()
+
+	// start tunA
+	err = tunA.Connect()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tunA.Close()
+
+	var wg sync.WaitGroup
+
+	// start accepting connections
+	wg.Add(1)
+	go testAccept(t, tunB, &wg)
+
+	// send a message
+	testSend(t, tunA)
+
+	// wait until done
+	wg.Wait()
+}