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tinygo-org / tinygo

Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
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std net package does not supported in wasm/wasi #2704

Open Cylkal opened 2 years ago

Cylkal commented 2 years ago

Problem description

code example:

package main

import (
    "net"
    "time"
)

func main() {
    _, _ = net.DialTimeout("tcp", ":80", time.Second)
}

compile command: tinygo build -o demo.wasm -target=wasi ./test.go

out:

# command-line-arguments
test.go:9:13: DialTimeout not declared by package net

Background

When I want to import package golang.org/x/crypto/ssh, trying to connect to ssh server in a wasm module, some err occurs while compile:

# golang.org/x/crypto/ssh
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:71:54: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:104:39: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:183:51: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:289:13: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:389:54: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/client.go:173:19: DialTimeout not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/server.go:299:28: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/streamlocal.go:47:28: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/streamlocal.go:85:15: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/streamlocal.go:89:15: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/streamlocal.go:99:30: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/streamlocal.go:112:14: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:27:21: ResolveTCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:191:14: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:231:17: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:235:17: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:355:20: TCPAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:372:16: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:376:16: UnixAddr not declared by package net
../../../../go/pkg/mod/golang.org/x/crypto@v0.0.0-20210813211128-0a44fdfbc16e/ssh/tcpip.go:391:16: TCPAddr not declared by package net

As we can see, ssh import net package which does not support many methods or types it reqiuired.

Is there any plan to support the official net library?

dankegel commented 2 years ago

WASI does seem to have the beginnings of support for sockets, see https://radu-matei.com/blog/towards-sockets-networking-wasi/ https://github.com/WebAssembly/WASI/pull/312 https://github.com/bytecodealliance/wasmtime/issues/70 https://github.com/WebAssembly/wasi-sockets and there has been a tiny bit of discussion about it in tinygo slack, https://gophers.slack.com/archives/CDJD3SUP6/p1645868342147429 but as yet nobody has wired it up.

sago35 commented 2 years ago

I have not tried this, but the following may be helpful.

tinynet implements a subnet of the Go net package. Because it is based on unisockets, it supports more platforms (WASM/JS, WASM/WASI, TinyGo, Go etc.) than the official net package.

https://github.com/alphahorizonio/tinynet

dipankardas011 commented 1 year ago

same issue here is my error log

# golang.org/x/crypto/ssh
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:289:13: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:71:54: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:104:39: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:183:51: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:389:54: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/client.go:177:19: undefined: net.DialTimeout
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/server.go:300:28: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/streamlocal.go:47:28: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/streamlocal.go:85:15: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/streamlocal.go:89:15: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/streamlocal.go:99:30: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/streamlocal.go:112:14: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:27:21: undefined: net.ResolveTCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:191:14: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:231:17: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:235:17: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:355:20: undefined: net.TCPAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:372:16: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:376:16: undefined: net.UnixAddr
../home/tinygo/go/pkg/mod/golang.org/x/crypto@v0.0.0-20220722155217-630584e8d5aa/ssh/tcpip.go:391:16: undefined: net.TCPAddr
dipankardas011 commented 1 year ago

Is it worked on? if not where should I work to help its development?

aykevl commented 1 year ago

See: https://github.com/tinygo-org/tinygo/pull/3704 (I haven't followed the development very closely).

dipankardas011 commented 1 year ago

Also one more query does tinygo support cobra cli package? I know its not the right place but whom to ask😕

aykevl commented 1 year ago

@dipankardas011 you can test so for yourself, it only takes a few seconds :wink: