net/http: http request not always be replace as js.fetch

[yimiaoxiehou]

Go version

go1.24.0 darwin/arm64

Output of go env in your module/workspace:

AR='ar'
CC='clang'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='clang++'
GCCGO='gccgo'
GO111MODULE=''
GOARCH='arm64'
GOARM64='v8.0'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/Users/yimiao/Library/Caches/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/Users/yimiao/Library/Application Support/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -arch arm64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/t7/t5sww6lx5vj8sp7dr8d15hwh0000gn/T/go-build424620184=/tmp/go-build -gno-record-gcc-switches -fno-common'
GOHOSTARCH='arm64'
GOHOSTOS='darwin'
GOINSECURE=''
GOMOD='/Users/yimiao/workspace/dipt/go.mod'
GOMODCACHE='/Users/yimiao/go/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='darwin'
GOPATH='/Users/yimiao/go'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/Users/yimiao/.version-fox/cache/golang/current'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/Users/yimiao/Library/Application Support/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/Users/yimiao/.version-fox/cache/golang/current/pkg/tool/darwin_arm64'
GOVCS=''
GOVERSION='go1.24.0'
GOWORK=''
PKG_CONFIG='pkg-config'

What did you do?

use httpclient on main.go is ok, it can replace as fetch

use httpclient by import pkg not work

What did you see happen?

resp, err := http.DefaultClient.Get("https://example.com") on main.go work ok. but on imported package not work.

What did you expect to see?

all httpclinet on wasm golang can be replace as fetch

[seankhliao]

see https://go.googlesource.com/go/+/9bd21607900d7072fd3d12ec756cb5eb87f8fe2a/src/net/http/roundtrip_js.go#61

your call https://github.com/yimiaoxiehou/dipt/blob/9a566ec974986cc9c093e0d6170b8ec5c76451e0/main.go#L100

uses https://pkg.go.dev/github.com/google/go-containerregistry/pkg/v1/remote#pkg-variables

which has a Dialer set.

Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and proposals only.

For questions please refer to https://github.com/golang/go/wiki/Questions