1 files changed, 58 insertions, 0 deletions
diff --git a/src/net/lookup_fake.go b/src/net/lookup_fake.go
new file mode 100644
index 0000000..c27eae4
--- /dev/null
+++ b/src/net/lookup_fake.go
@@ -0,0 +1,58 @@
+// Copyright 2011 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build js && wasm
+
+package net
+
+import (
+	"context"
+	"syscall"
+)
+
+func lookupProtocol(ctx context.Context, name string) (proto int, err error) {
+	return lookupProtocolMap(name)
+}
+
+func (*Resolver) lookupHost(ctx context.Context, host string) (addrs []string, err error) {
+	return nil, syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupIP(ctx context.Context, network, host string) (addrs []IPAddr, err error) {
+	return nil, syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupPort(ctx context.Context, network, service string) (port int, err error) {
+	return goLookupPort(network, service)
+}
+
+func (*Resolver) lookupCNAME(ctx context.Context, name string) (cname string, err error) {
+	return "", syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupSRV(ctx context.Context, service, proto, name string) (cname string, srvs []*SRV, err error) {
+	return "", nil, syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupMX(ctx context.Context, name string) (mxs []*MX, err error) {
+	return nil, syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupNS(ctx context.Context, name string) (nss []*NS, err error) {
+	return nil, syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupTXT(ctx context.Context, name string) (txts []string, err error) {
+	return nil, syscall.ENOPROTOOPT
+}
+
+func (*Resolver) lookupAddr(ctx context.Context, addr string) (ptrs []string, err error) {
+	return nil, syscall.ENOPROTOOPT
+}
+
+// concurrentThreadsLimit returns the number of threads we permit to
+// run concurrently doing DNS lookups.
+func concurrentThreadsLimit() int {
+	return 500
+}