Splitter: 全局限制内存使用量，防止内存溢出

src/Http/HttpRequestSplitter.cpp

@@ -13,9 +13,16 @@
 #include "Util/util.h"
 using namespace toolkit;
 
+//协议解析最大缓存1兆数据
+static constexpr size_t kMaxCacheSize = 1 * 1024 * 1024;
+
 namespace mediakit {
 
 void HttpRequestSplitter::input(const char *data,size_t len) {
+    if (remainDataSize() > kMaxCacheSize) {
+        //缓存太多数据无法处理则上抛异常
+        throw std::out_of_range("remain data size is too huge:" + to_string(remainDataSize()));
+    }
     const char *ptr = data;
     if(!_remain_data.empty()){
         _remain_data.append(data,len);