body size middleware for public POST endpoints

controller/body_size_middleware.go

@@ -0,0 +1,16 @@
+package controller
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+const maxBodyBytes = int64(65536)
+
+func bodySizeMiddleware(c *gin.Context) {
+	var w http.ResponseWriter = c.Writer
+	c.Request.Body = http.MaxBytesReader(w, c.Request.Body, maxBodyBytes)
+
+	c.Next()
+}