Draft: asynchronous phase handler

.github/workflows/nginx.yaml

@@ -49,10 +49,11 @@ env:
 
   NGX_TEST_FILES: examples/t
   NGX_TEST_GLOBALS_DYNAMIC: >-
-    load_module ${{ github.workspace }}/nginx/objs/ngx_http_async_module.so;
+    load_module ${{ github.workspace }}/nginx/objs/ngx_http_async_request_module.so;
     load_module ${{ github.workspace }}/nginx/objs/ngx_http_awssigv4_module.so;
     load_module ${{ github.workspace }}/nginx/objs/ngx_http_curl_module.so;
     load_module ${{ github.workspace }}/nginx/objs/ngx_http_shared_dict_module.so;
+    load_module ${{ github.workspace }}/nginx/objs/ngx_http_subrequest_module.so;
     load_module ${{ github.workspace }}/nginx/objs/ngx_http_upstream_custom_module.so;
 
   OPENSSL_VERSION: '3.0.16'

Cargo.toml

@@ -53,6 +53,7 @@ targets = []
 [dependencies]
 allocator-api2 = { version = "0.4.0", default-features = false, features = ["fresh-rust"] }
 async-task = { version = "4.7.1", optional = true }
+futures-util = { version = "0.3", default-features = false }
 lock_api = "0.4.13"
 nginx-sys = { path = "nginx-sys", version = "0.5.0"}
 pin-project-lite = { version = "0.2.16", optional = true }

examples/Cargo.toml

@@ -13,6 +13,9 @@ autobins = false
 build = "../build.rs"
 
 [dependencies]
+# allocator-api2 = { version = "0.4.0", default-features = false, features = ["fresh-rust"] }
+# async-task = { version = "4.7.1" }
+# futures = "0.3"
 nginx-sys = { path = "../nginx-sys/", default-features = false }
 ngx = { path = "../", default-features = false, features = ["std"] }
 
@@ -47,22 +50,29 @@ path = "upstream.rs"
 crate-type = ["cdylib"]
 
 [[example]]
-name = "async"
-path = "async.rs"
+name = "async_request"
+path = "async_request.rs"
 crate-type = ["cdylib"]
+required-features = ["async"]
 
 [[example]]
 name = "shared_dict"
 path = "shared_dict.rs"
 crate-type = ["cdylib"]
 
+[[example]]
+name = "subrequest"
+path = "subrequest.rs"
+crate-type = ["cdylib"]
+
 [features]
 default = ["export-modules", "ngx/vendored"]
 # Generate `ngx_modules` table with module exports
 # The exports table is required for building loadable modules with --crate-type cdylib
 # outside of the NGINX buildsystem. However, cargo currently does not detect
 # this configuration automatically.
 # See https://github.com/rust-lang/rust/issues/20267
+async = ["ngx/async"]
 export-modules = []
 linux = []