cleanup examples

examples/gateway/car/main.go

@@ -31,7 +31,6 @@ func main() {
 	if err != nil {
 		log.Fatal(err)
 	}
-
 	handler := common.NewBlocksHandler(gwAPI, *portPtr)
 
 	// Initialize the public gateways that we will want to have available through

examples/gateway/common/blocks.go

@@ -25,6 +25,7 @@ import (
 	uio "github.com/ipfs/go-unixfs/io"
 	"github.com/ipfs/go-unixfsnode"
 	iface "github.com/ipfs/interface-go-ipfs-core"
+	nsopts "github.com/ipfs/interface-go-ipfs-core/options/namesys"
 	ifacepath "github.com/ipfs/interface-go-ipfs-core/path"
 	dagpb "github.com/ipld/go-codec-dagpb"
 	"github.com/ipld/go-ipld-prime"
@@ -144,7 +145,15 @@ func (api *BlocksGateway) GetIPNSRecord(ctx context.Context, c cid.Cid) ([]byte,
 	return nil, routing.ErrNotSupported
 }
 
-func (api *BlocksGateway) GetDNSLinkRecord(ctx context.Context, host string) (ifacepath.Path, error) {
+func (api *BlocksGateway) GetDNSLinkRecord(ctx context.Context, hostname string) (ifacepath.Path, error) {
+	if api.namesys != nil {
+		p, err := api.namesys.Resolve(ctx, "/ipns/"+hostname, nsopts.Depth(1))
+		if err == namesys.ErrResolveRecursion {
+			err = nil
+		}
+		return ifacepath.New(p.String()), err
+	}
+
 	return nil, errors.New("not implemented")
 }
 

examples/gateway/proxy/main.go

@@ -9,6 +9,7 @@ import (
 	"github.com/ipfs/go-blockservice"
 	offline "github.com/ipfs/go-ipfs-exchange-offline"
 	"github.com/ipfs/go-libipfs/examples/gateway/common"
+	"github.com/ipfs/go-libipfs/gateway"
 )
 
 func main() {
@@ -24,16 +25,28 @@ func main() {
 	routing := newProxyRouting(*gatewayUrlPtr, nil)
 
 	// Creates the gateway with the block service and the routing.
-	gateway, err := common.NewBlocksGateway(blockService, routing)
+	gwAPI, err := common.NewBlocksGateway(blockService, routing)
 	if err != nil {
 		log.Fatal(err)
 	}
+	handler := common.NewBlocksHandler(gwAPI, *portPtr)
+
+	// Initialize the public gateways that we will want to have available through
+	// Host header rewritting. This step is optional and only required if you're
+	// running multiple public gateways and want different settings and support
+	// for DNSLink and Subdomain Gateways.
+	publicGateways := map[string]*gateway.Specification{
+		"localhost": {
+			Paths:         []string{"/ipfs", "/ipns"},
+			NoDNSLink:     true,
+			UseSubdomains: true,
+		},
+	}
+	noDNSLink := true
+	handler = gateway.WithHostname(handler, gwAPI, publicGateways, noDNSLink)
 
-	handler := common.NewBlocksHandler(gateway, *portPtr)
-	address := "127.0.0.1:" + strconv.Itoa(*portPtr)
-	log.Printf("Listening on http://%s", address)
-
-	if err := http.ListenAndServe(address, handler); err != nil {
+	log.Printf("Listening on http://localhost:%d", *portPtr)
+	if err := http.ListenAndServe(":"+strconv.Itoa(*portPtr), handler); err != nil {
 		log.Fatal(err)
 	}
 }

gateway/gateway_test.go

@@ -86,18 +86,18 @@ func (m *mockApi) GetIPNSRecord(context.Context, cid.Cid) ([]byte, error) {
 	return nil, errors.New("not implemented")
 }
 
-func (m *mockApi) IsCached(context.Context, ipath.Path) bool {
-	return false
-}
-
-func (m *mockApi) ResolvePath(context.Context, ipath.Path) (ipath.Resolved, error) {
-	return nil, errors.New("not implemented")
-}
-
 func (m *mockApi) GetDNSLinkRecord(ctx context.Context, hostname string) (ipath.Path, error) {
 	p, err := m.ns.Resolve(ctx, "/ipns/"+hostname, nsopts.Depth(1))
 	if err == namesys.ErrResolveRecursion {
 		err = nil
 	}
 	return ipath.New(p.String()), err
 }
+
+func (m *mockApi) IsCached(context.Context, ipath.Path) bool {
+	return false
+}
+
+func (m *mockApi) ResolvePath(context.Context, ipath.Path) (ipath.Resolved, error) {
+	return nil, errors.New("not implemented")
+}