Implementing socket extensions

README.md

@@ -41,7 +41,8 @@ A brief description for `example`
 | example/fibonacci.py      | Fibonacci, which contains loop and recursion                         |
 | example/fibonacci_env.py  | Call python/native function in wasm                                  |
 | example/pi.py             | Calculate π using the agm algorithm                                  |
-| example/wasi_ll.py       | Execute a wasi program and list information about a directory         |
+| example/wasi_httpbin.py   | Execute a wasi program and http get from <http://httpbin.org>        |
+| example/wasi_ll.py        | Execute a wasi program and list information about a directory        |
 | example/wasi_zen.py       | Execute a wasi program and print poem "The Zen of Python"            |
 
 # Test

example/wasi_httpbin.py

@@ -0,0 +1,31 @@
+import pywasm
+import socket
+
+runtime = pywasm.core.Runtime()
+
+client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+host = 'httpbin.org'
+port = 80
+client_socket.connect((host, port))
+rights = sum([
+    pywasm.wasi.Preview1.RIGHTS_FD_READ,
+    pywasm.wasi.Preview1.RIGHTS_FD_WRITE,
+    pywasm.wasi.Preview1.RIGHTS_SOCK_SHUTDOWN,
+])
+
+wasi = pywasm.wasi.Preview1(['wasi_httpbin.wasm'], {}, {})
+wasi.fd.append(pywasm.wasi.Preview1.File(
+    host_fd=client_socket.fileno(),
+    host_name=client_socket.getsockname(),
+    host_status=pywasm.wasi.Preview1.FILE_STATUS_OPENED,
+    pipe=None,
+    wasm_fd=3,
+    wasm_flag=0,
+    wasm_name=client_socket.getsockname(),
+    wasm_rights_base=rights,
+    wasm_rights_root=rights,
+    wasm_status=pywasm.wasi.Preview1.FILE_STATUS_OPENED,
+    wasm_type=pywasm.wasi.Preview1.FILETYPE_SOCKET_STREAM,
+))
+wasi.bind(runtime)
+wasi.main(runtime, runtime.instance_from_file('example/wasi_httpbin/bin/wasi_httpbin.wasm'))

example/wasi_httpbin/.cargo/config.toml

@@ -0,0 +1,2 @@
+[build]
+target = "wasm32-wasip1"

example/wasi_httpbin/.gitignore

@@ -0,0 +1 @@
+/target

example/wasi_httpbin/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "wasi_httpbin"
+version = "1.0.0"
+edition = "2024"
+
+[dependencies]
+wasi = "0.11.0+wasi-snapshot-preview1"