⬆️ version bump to v4.5

- Update obioptions.Version from "Release 4.4.29" to "/v/ Release v5"
- Update version.txt from 4.29 → .30
(automated by Makefile)

pkg/obilua/luahttp.go

@@ -0,0 +1,65 @@
+package obilua
+
+import (
+	"io"
+	"net/http"
+	"strings"
+	"time"
+
+	lua "github.com/yuin/gopher-lua"
+)
+
+const httpClientTimeout = 30 * time.Second
+
+var _httpClient = &http.Client{
+	Timeout: httpClientTimeout,
+}
+
+// RegisterHTTP registers the http module in the Lua state.
+//
+// Exposes:
+//
+//	http.post(url, body) → response string  (on success)
+//	http.post(url, body) → nil, err string  (on error)
+func RegisterHTTP(luaState *lua.LState) {
+	table := luaState.NewTable()
+	luaState.SetField(table, "post", luaState.NewFunction(luaHTTPPost))
+	luaState.SetGlobal("http", table)
+}
+
+// luaHTTPPost implements http.post(url, body) for Lua.
+//
+// Lua signature:
+//
+//	local response = http.post(url, body)
+//	local response, err = http.post(url, body)
+func luaHTTPPost(L *lua.LState) int {
+	url := L.CheckString(1)
+	body := L.CheckString(2)
+
+	req, err := http.NewRequest(http.MethodPost, url, strings.NewReader(body))
+	if err != nil {
+		L.Push(lua.LNil)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := _httpClient.Do(req)
+	if err != nil {
+		L.Push(lua.LNil)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+	defer resp.Body.Close()
+
+	respBytes, err := io.ReadAll(resp.Body)
+	if err != nil {
+		L.Push(lua.LNil)
+		L.Push(lua.LString(err.Error()))
+		return 2
+	}
+
+	L.Push(lua.LString(respBytes))
+	return 1
+}