Begin implementation of wasi-http (#5929)

* Integrate experimental HTTP into wasmtime.

* Reset Cargo.lock

* Switch to bail!, plumb options partially.

* Implement timeouts.

* Remove generated files & wasm, add Makefile

* Remove generated code textfile

* Update crates/wasi-http/Cargo.toml

Co-authored-by: Eduardo de Moura Rodrigues <16357187+eduardomourar@users.noreply.github.com>

* Update crates/wasi-http/Cargo.toml

Co-authored-by: Eduardo de Moura Rodrigues <16357187+eduardomourar@users.noreply.github.com>

* Extract streams from request/response.

* Fix read for len < buffer length.

* Formatting.

* types impl: swap todos for traps

* streams_impl: idioms, and swap todos for traps

* component impl: idioms, swap all unwraps for traps, swap all todos for traps

* http impl: idiom

* Remove an unnecessary mut.

* Remove an unsupported function.

* Switch to the tokio runtime for the HTTP request.

* Add a rust example.

* Update to latest wit definition

* Remove example code.

* wip: start writing a http test...

* finish writing the outbound request example

havent executed it yet

* better debug output

* wasi-http: some stubs required for rust rewrite of the example

* add wasi_http tests to test-programs

* CI: run the http tests

* Fix some warnings.

* bump new deps to latest releases (#3)

* Add tests for wasi-http to test-programs (#2)

* wip: start writing a http test...

* finish writing the outbound request example

havent executed it yet

* better debug output

* wasi-http: some stubs required for rust rewrite of the example

* add wasi_http tests to test-programs

* CI: run the http tests

* bump new deps to latest releases

h2 0.3.16
http 0.2.9
mio 0.8.6
openssl 0.10.48
openssl-sys 0.9.83
tokio 1.26.0

---------

Co-authored-by: Brendan Burns <bburns@microsoft.com>

* Update crates/test-programs/tests/http_tests/runtime/wasi_http_tests.rs

* Update crates/test-programs/tests/http_tests/runtime/wasi_http_tests.rs

* Update crates/test-programs/tests/http_tests/runtime/wasi_http_tests.rs

* wasi-http: fix cargo.toml file and publish script to work together (#4)

unfortunately, the publish script doesn't use a proper toml parser (in
order to not have any dependencies), so the whitespace has to be the
trivial expected case.

then, add wasi-http to the list of crates to publish.

* Update crates/test-programs/build.rs

* Switch to rustls

* Cleanups.

* Merge switch to rustls.

* Formatting

* Remove libssl install

* Fix tests.

* Rename wasi-http -> wasmtime-wasi-http

* prtest:full

Conditionalize TLS on riscv64gc.

* prtest:full

Fix formatting, also disable tls on s390x

* prtest:full

Add a path parameter to wit-bindgen, remove symlink.

* prtest:full

Fix tests for places where SSL isn't supported.

* Update crates/wasi-http/Cargo.toml

---------

Co-authored-by: Eduardo de Moura Rodrigues <16357187+eduardomourar@users.noreply.github.com>
Co-authored-by: Pat Hickey <phickey@fastly.com>
Co-authored-by: Pat Hickey <pat@moreproductive.org>

Cargo.toml

@@ -33,6 +33,7 @@ wasmtime-wasi = { workspace = true, features = ["exit"] }
 wasmtime-wasi-crypto = { workspace = true, optional = true }
 wasmtime-wasi-nn = { workspace = true, optional = true }
 wasmtime-wasi-threads = { workspace = true, optional = true }
+wasmtime-wasi-http = { workspace = true, optional = true }
 clap = { workspace = true, features = ["color", "suggestions", "derive"] }
 anyhow = { workspace = true }
 target-lexicon = { workspace = true }
@@ -165,6 +166,8 @@ cranelift-bforest = { path = "cranelift/bforest", version = "0.96.0" }
 cranelift-control = { path = "cranelift/control", version = "0.96.0" }
 cranelift = { path = "cranelift/umbrella", version = "0.96.0" }
 
+wasmtime-wasi-http = { path = "crates/wasi-http", version = "=0.0.1" }
+
 winch-codegen = { path = "winch/codegen", version = "=0.7.0" }
 winch-environ = { path = "winch/environ", version = "=0.7.0" }
 winch-filetests = { path = "winch/filetests" }
@@ -213,6 +216,7 @@ default = [
   "vtune",
   "wasi-nn",
   "wasi-threads",
+  "wasi-http",
   "pooling-allocator",
 ]
 jitdump = ["wasmtime/jitdump"]
@@ -220,6 +224,7 @@ vtune = ["wasmtime/vtune"]
 wasi-crypto = ["dep:wasmtime-wasi-crypto"]
 wasi-nn = ["dep:wasmtime-wasi-nn"]
 wasi-threads = ["dep:wasmtime-wasi-threads"]
+wasi-http = ["dep:wasmtime-wasi-http"]
 pooling-allocator = ["wasmtime/pooling-allocator", "wasmtime-cli-flags/pooling-allocator"]
 all-arch = ["wasmtime/all-arch"]
 posix-signals-on-macos = ["wasmtime/posix-signals-on-macos"]
@@ -264,3 +269,4 @@ harness = false
 [[bench]]
 name = "wasi"
 harness = false
+