net/http: js-wasm in nodejs HTTP requests fail #69106
Description
Go version
go version go1.22.0 darwin/amd64
Output of go env in your module/workspace:
GO111MODULE='on' GOARCH='amd64' GOBIN='' GOCACHE='/Users/sekulicd/Library/Caches/go-build' GOENV='/Users/sekulicd/Library/Application Support/go/env' GOEXE='' GOEXPERIMENT='' GOFLAGS='' GOHOSTARCH='amd64' GOHOSTOS='darwin' GOINSECURE='' GOMODCACHE='/Users/sekulicd/go/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='darwin' GOPATH='/Users/sekulicd/go' GOPRIVATE='' GOPROXY='https://proxy.golang.org,direct' GOROOT='/usr/local/Cellar/go/1.22.0/libexec' GOSUMDB='sum.golang.org' GOTMPDIR='' GOTOOLCHAIN='auto' GOTOOLDIR='/usr/local/Cellar/go/1.22.0/libexec/pkg/tool/darwin_amd64' GOVCS='' GOVERSION='go1.22.0' GCCGO='gccgo' GOAMD64='v1' AR='ar' CC='cc' CXX='c++' CGO_ENABLED='1' GOMOD='/Users/sekulicd/go/src/tst/go.mod' GOWORK='' CGO_CFLAGS='-O2 -g' CGO_CPPFLAGS='' CGO_CXXFLAGS='-O2 -g' CGO_FFLAGS='-O2 -g' CGO_LDFLAGS='-O2 -g' PKG_CONFIG='pkg-config' GOGCCFLAGS='-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -ffile-prefix-map=/var/folders/q2/t3b78q_d1d9br0p8q1zqd8nc0000gn/T/go-build1746037209=/tmp/go-build -gno-record-gcc-switches -fno-common'What did you do?
I want to make HTTP request from Go WASM inside Node JS.
Here is sample main.go
//go:build js && wasm // +build js,wasm package main import ( "io/ioutil" "log" "net/http" ) func main() { c := http.Client{ Transport: http.DefaultTransport, } resp, err := c.Get("https://httpbin.org/anything") if err != nil { log.Fatal(err) } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) if err != nil { log.Fatal(err) } log.Println(string(body)) } When i try to execute WebAssembly with Node.js with cmd:
GOOS=js GOARCH=wasm go run -exec="$(go env GOROOT)/misc/wasm/go_js_wasm_exec" . I get bellow error:
2024/08/28 14:11:49 Get "https://httpbin.org/anything": dial tcp: lookup httpbin.org on 192.168.17.142:53: write udp 127.0.0.1:4->192.168.17.142:53: write: Connection reset by peer I understood that with this PR if i add js/wasm build tags that http.DefaultTransport will use RoundTripper with fetch options.
What did you see happen?
2024/08/28 14:11:49 Get "https://httpbin.org/anything": dial tcp: lookup httpbin.org on 192.168.17.142:53: write udp 127.0.0.1:4->192.168.17.142:53: write: Connection reset by peer What did you expect to see?
Response similar to bellow:
{ "args": {}, "data": "", "files": {}, "form": {}, "headers": { "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7", "Accept-Encoding": "gzip, deflate, br, zstd", "Accept-Language": "en-US,en;q=0.9,sr;q=0.8,hr;q=0.7,bs;q=0.6,sh;q=0.5", "Host": "httpbin.org", "Priority": "u=0, i", "Sec-Ch-Ua": "\"Not)A;Brand\";v=\"99\", \"Google Chrome\";v=\"127\", \"Chromium\";v=\"127\"", "Sec-Ch-Ua-Mobile": "?0", "Sec-Ch-Ua-Platform": "\"macOS\"", "Sec-Fetch-Dest": "document", "Sec-Fetch-Mode": "navigate", "Sec-Fetch-Site": "none", "Sec-Fetch-User": "?1", "Upgrade-Insecure-Requests": "1", "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36", "X-Amzn-Trace-Id": "Root=1-66cf14ab-0caaf43c6309fce12a8d7bc2" }, "json": null, "method": "GET", "origin": "77.222.25.88", "url": "https://httpbin.org/anything" }