diff --git a/3rdpart/ZLToolKit b/3rdpart/ZLToolKit
index d4d4ac1e..17c445fd 160000
--- a/3rdpart/ZLToolKit
+++ b/3rdpart/ZLToolKit
@@ -1 +1 @@
-Subproject commit d4d4ac1e9866ef4d025b8189264efe5ec8fa201c
+Subproject commit 17c445fd1f42cddeeccdc6a06aa56cf2ffcfc99f
diff --git a/src/Extension/Frame.h b/src/Extension/Frame.h
index 8f2ab8a3..a967392c 100644
--- a/src/Extension/Frame.h
+++ b/src/Extension/Frame.h
@@ -161,7 +161,7 @@ public:
 
 public:
     CodecId _codec_id = CodecInvalid;
-    string _buffer;
+    BufferLikeString _buffer;
     uint32_t _dts = 0;
     uint32_t _pts = 0;
     uint32_t _prefix_size = 0;
diff --git a/src/Http/HttpChunkedSplitter.cpp b/src/Http/HttpChunkedSplitter.cpp
index e99c4f98..fd074491 100644
--- a/src/Http/HttpChunkedSplitter.cpp
+++ b/src/Http/HttpChunkedSplitter.cpp
@@ -13,7 +13,7 @@
 
 namespace mediakit{
     
-const char *HttpChunkedSplitter::onSearchPacketTail(const char *data, int len) {
+const char *HttpChunkedSplitter::onSearchPacketTail(const char *data, uint64_t len) {
     auto pos = strstr(data,"\r\n");
     if(!pos){
         return nullptr;
diff --git a/src/Http/HttpChunkedSplitter.h b/src/Http/HttpChunkedSplitter.h
index 5368c4da..5ba586a4 100644
--- a/src/Http/HttpChunkedSplitter.h
+++ b/src/Http/HttpChunkedSplitter.h
@@ -30,7 +30,7 @@ public:
 protected:
     int64_t onRecvHeader(const char *data,uint64_t len) override;
     void onRecvContent(const char *data,uint64_t len) override;
-    const char *onSearchPacketTail(const char *data,int len) override;
+    const char *onSearchPacketTail(const char *data,uint64_t len) override;
 protected:
     virtual void onRecvChunk(const char *data,uint64_t len){
         if(_onChunkData){
diff --git a/src/Http/HttpClient.cpp b/src/Http/HttpClient.cpp
index 27549e6a..706bd294 100644
--- a/src/Http/HttpClient.cpp
+++ b/src/Http/HttpClient.cpp
@@ -99,9 +99,6 @@ void HttpClient::onConnect(const SockException &ex) {
         return;
     }
 
-    //先假设http客户端只会接收一点点数据（只接受http头，节省内存）
-    getSock()->setReadBuffer(std::make_shared<BufferRaw>(1 * 1024));
-
     _totalBodySize = 0;
     _recvedBodySize = 0;
     HttpRequestSplitter::reset();
@@ -156,9 +153,6 @@ int64_t HttpClient::onRecvHeader(const char *data, uint64_t len) {
     }
 
     if(_parser["Transfer-Encoding"] == "chunked"){
-        //我们认为这种情况下后面应该有大量的数据过来，加大接收缓存提高性能
-        getSock()->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
-
         //如果Transfer-Encoding字段等于chunked，则认为后续的content是不限制长度的
         _totalBodySize = -1;
         _chunkedSplitter = std::make_shared<HttpChunkedSplitter>([this](const char *data,uint64_t len){
@@ -183,13 +177,6 @@ int64_t HttpClient::onRecvHeader(const char *data, uint64_t len) {
     //但是由于我们没必要等content接收完毕才回调onRecvContent(因为这样浪费内存并且要多次拷贝数据)
     //所以返回-1代表我们接下来分段接收content
     _recvedBodySize = 0;
-    if(_totalBodySize > 0){
-        //根据_totalBodySize设置接收缓存大小
-        getSock()->setReadBuffer(std::make_shared<BufferRaw>(MIN(_totalBodySize + 1,256 * 1024)));
-    }else{
-        getSock()->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
-    }
-
     return -1;
 }
 
diff --git a/src/Http/HttpRequestSplitter.cpp b/src/Http/HttpRequestSplitter.cpp
index 44a2f040..160d7243 100644
--- a/src/Http/HttpRequestSplitter.cpp
+++ b/src/Http/HttpRequestSplitter.cpp
@@ -39,6 +39,9 @@ void HttpRequestSplitter::input(const char *data,uint64_t len) {
     const char *index = nullptr;
     _remain_data_size = len;
     while (_content_len == 0 && _remain_data_size > 0 && (index = onSearchPacketTail(ptr,_remain_data_size)) != nullptr) {
+        if(index == ptr){
+            break;
+        }
         //_content_len == 0，这是请求头
         const char *header_ptr = ptr;
         int64_t header_size = index - ptr;
@@ -61,8 +64,7 @@ void HttpRequestSplitter::input(const char *data,uint64_t len) {
 
     if(_content_len == 0){
         //尚未找到http头，缓存定位到剩余数据部分
-        string str(ptr,_remain_data_size);
-        _remain_data = str;
+        _remain_data.assign(ptr,_remain_data_size);
         return;
     }
 
@@ -71,8 +73,7 @@ void HttpRequestSplitter::input(const char *data,uint64_t len) {
         //数据按照固定长度content处理
         if(_remain_data_size < _content_len){
             //数据不够，缓存定位到剩余数据部分
-            string str(ptr,_remain_data_size);
-            _remain_data = str;
+            _remain_data.assign(ptr, _remain_data_size);
             return;
         }
         //收到content数据，并且接受content完毕
@@ -85,9 +86,7 @@ void HttpRequestSplitter::input(const char *data,uint64_t len) {
 
         if(_remain_data_size > 0){
             //还有数据没有处理完毕
-            string str(ptr,_remain_data_size);
-            _remain_data = str;
-
+            _remain_data.assign(ptr,_remain_data_size);
             data = ptr = (char *)_remain_data.data();
             len = _remain_data.size();
             goto splitPacket;
@@ -112,7 +111,7 @@ void HttpRequestSplitter::reset() {
     _remain_data.clear();
 }
 
-const char *HttpRequestSplitter::onSearchPacketTail(const char *data,int len) {
+const char *HttpRequestSplitter::onSearchPacketTail(const char *data,uint64_t len) {
     auto pos = strstr(data,"\r\n\r\n");
     if(pos == nullptr){
         return nullptr;
diff --git a/src/Http/HttpRequestSplitter.h b/src/Http/HttpRequestSplitter.h
index 4359e130..d832a230 100644
--- a/src/Http/HttpRequestSplitter.h
+++ b/src/Http/HttpRequestSplitter.h
@@ -12,7 +12,9 @@
 #define ZLMEDIAKIT_HTTPREQUESTSPLITTER_H
 
 #include <string>
+#include "Network/Buffer.h"
 using namespace std;
+using namespace toolkit;
 
 namespace mediakit {
 
@@ -54,7 +56,7 @@ protected:
      * @param len 数据长度
      * @return nullptr代表未找到包位，否则返回包尾指针
      */
-    virtual const char *onSearchPacketTail(const char *data,int len);
+    virtual const char *onSearchPacketTail(const char *data, uint64_t len);
 
     /**
      * 设置content len
@@ -71,7 +73,7 @@ protected:
       */
      int64_t remainDataSize();
 private:
-    string _remain_data;
+    BufferLikeString _remain_data;
     int64_t _content_len = 0;
     int64_t _remain_data_size = 0;
 };
diff --git a/src/Http/HttpSession.cpp b/src/Http/HttpSession.cpp
index ba996d93..2d9740cc 100644
--- a/src/Http/HttpSession.cpp
+++ b/src/Http/HttpSession.cpp
@@ -24,8 +24,6 @@ HttpSession::HttpSession(const Socket::Ptr &pSock) : TcpSession(pSock) {
     TraceP(this);
     GET_CONFIG(uint32_t,keep_alive_sec,Http::kKeepAliveSecond);
     pSock->setSendTimeOutSecond(keep_alive_sec);
-    //起始接收buffer缓存设置为4K，节省内存
-    pSock->setReadBuffer(std::make_shared<BufferRaw>(4 * 1024));
 }
 
 HttpSession::~HttpSession() {
@@ -638,14 +636,6 @@ void HttpSession::Handle_Req_POST(int64_t &content_len) {
         return;
     }
 
-    //根据Content-Length设置接收缓存大小
-    if(totalContentLen > 0){
-        getSock()->setReadBuffer(std::make_shared<BufferRaw>(MIN(totalContentLen + 1,256 * 1024)));
-    }else{
-        //不定长度的Content-Length
-        getSock()->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
-    }
-
     if(totalContentLen > 0 && totalContentLen < maxReqSize ){
         //返回固定长度的content
         content_len = totalContentLen;
@@ -738,9 +728,9 @@ void HttpSession::onWrite(const Buffer::Ptr &buffer, bool flush) {
     }
 }
 
-void HttpSession::onWebSocketEncodeData(const Buffer::Ptr &buffer){
+void HttpSession::onWebSocketEncodeData(Buffer::Ptr buffer){
     _total_bytes_usage += buffer->size();
-    send(buffer);
+    send(std::move(buffer));
 }
 
 void HttpSession::onWebSocketDecodeComplete(const WebSocketHeader &header_in){
diff --git a/src/Http/HttpSession.h b/src/Http/HttpSession.h
index f1df5a8d..d9d2047c 100644
--- a/src/Http/HttpSession.h
+++ b/src/Http/HttpSession.h
@@ -92,7 +92,7 @@ protected:
      * 发送数据进行websocket协议打包后回调
      * @param buffer websocket协议数据
      */
-    void onWebSocketEncodeData(const Buffer::Ptr &buffer) override;
+    void onWebSocketEncodeData(Buffer::Ptr buffer) override;
 
     /**
      * 接收到完整的一个webSocket数据包后回调
diff --git a/src/Http/WebSocketClient.h b/src/Http/WebSocketClient.h
index 4ecce5cb..17a0febc 100644
--- a/src/Http/WebSocketClient.h
+++ b/src/Http/WebSocketClient.h
@@ -43,11 +43,11 @@ protected:
     /**
      * 发送前拦截并打包为websocket协议
      */
-    int send(const Buffer::Ptr &buf) override{
+    int send(Buffer::Ptr buf) override{
         if(_beforeSendCB){
             return _beforeSendCB(buf);
         }
-        return ClientType::send(buf);
+        return ClientType::send(std::move(buf));
     }
 
     /**
@@ -287,8 +287,8 @@ protected:
      * @param ptr 数据指针
      * @param len 数据指针长度
      */
-    void onWebSocketEncodeData(const Buffer::Ptr &buffer) override{
-        HttpClientImp::send(buffer);
+    void onWebSocketEncodeData(Buffer::Ptr buffer) override{
+        HttpClientImp::send(std::move(buffer));
     }
 
 private:
diff --git a/src/Http/WebSocketSession.h b/src/Http/WebSocketSession.h
index 69b691f1..0a8d7163 100644
--- a/src/Http/WebSocketSession.h
+++ b/src/Http/WebSocketSession.h
@@ -53,11 +53,11 @@ protected:
      * @param buf 需要截取的数据
      * @return 数据字节数
      */
-    int send(const Buffer::Ptr &buf) override {
+    int send(Buffer::Ptr buf) override {
         if (_beforeSendCB) {
             return _beforeSendCB(buf);
         }
-        return TcpSessionType::send(buf);
+        return TcpSessionType::send(std::move(buf));
     }
 
     string getIdentifier() const override {
@@ -219,8 +219,8 @@ protected:
     /**
      * 发送数据进行websocket协议打包后回调
     */
-    void onWebSocketEncodeData(const Buffer::Ptr &buffer) override{
-        HttpSessionType::send(buffer);
+    void onWebSocketEncodeData(Buffer::Ptr buffer) override{
+        HttpSessionType::send(std::move(buffer));
     }
 
 private:
diff --git a/src/Http/WebSocketSplitter.h b/src/Http/WebSocketSplitter.h
index e241406c..02d5d2eb 100644
--- a/src/Http/WebSocketSplitter.h
+++ b/src/Http/WebSocketSplitter.h
@@ -132,7 +132,7 @@ protected:
      * @param ptr 数据指针
      * @param len 数据指针长度
      */
-    virtual void onWebSocketEncodeData(const Buffer::Ptr &buffer){};
+    virtual void onWebSocketEncodeData(Buffer::Ptr buffer){};
 
 private:
     void onPayloadData(uint8_t *data, uint64_t len);
diff --git a/src/Record/MP4Muxer.cpp b/src/Record/MP4Muxer.cpp
index 471b6e09..f5b79032 100644
--- a/src/Record/MP4Muxer.cpp
+++ b/src/Record/MP4Muxer.cpp
@@ -101,7 +101,8 @@ void MP4MuxerInterface::inputFrame(const Frame::Ptr &frame) {
 
                 if (_frameCached.size() != 1) {
                     //缓存中有多帧，需要按照mp4格式合并一起
-                    string merged;
+                    BufferLikeString merged;
+                    merged.reserve(back->size() + 1024);
                     _frameCached.for_each([&](const Frame::Ptr &frame) {
                         uint32_t nalu_size = frame->size() - frame->prefixSize();
                         nalu_size = htonl(nalu_size);
diff --git a/src/Record/TsMuxer.cpp b/src/Record/TsMuxer.cpp
index f6e64fc2..84273fc6 100644
--- a/src/Record/TsMuxer.cpp
+++ b/src/Record/TsMuxer.cpp
@@ -107,7 +107,8 @@ void TsMuxer::inputFrame(const Frame::Ptr &frame) {
                 Frame::Ptr back = _frameCached.back();
                 Buffer::Ptr merged_frame = back;
                 if (_frameCached.size() != 1) {
-                    string merged;
+                    BufferLikeString merged;
+                    merged.reserve(back->size() + 1024);
                     _frameCached.for_each([&](const Frame::Ptr &frame) {
                         if (frame->prefixSize()) {
                             merged.append(frame->data(), frame->size());
@@ -119,7 +120,7 @@ void TsMuxer::inputFrame(const Frame::Ptr &frame) {
                             _is_idr_fast_packet = true;
                         }
                     });
-                    merged_frame = std::make_shared<BufferString>(std::move(merged));
+                    merged_frame = std::make_shared<BufferOffset<BufferLikeString> >(std::move(merged));
                 }
                 track_info.stamp.revise(back->dts(), back->pts(), dts_out, pts_out);
                 //取视频时间戳为TS的时间戳
diff --git a/src/Rtmp/Rtmp.h b/src/Rtmp/Rtmp.h
index 0d2e5fb3..1f8d1e3e 100644
--- a/src/Rtmp/Rtmp.h
+++ b/src/Rtmp/Rtmp.h
@@ -136,7 +136,7 @@ public:
     uint32_t ts_field = 0;
     uint32_t stream_index;
     uint32_t chunk_id;
-    std::string buffer;
+    BufferLikeString buffer;
 
 public:
     char *data() const override{
diff --git a/src/Rtmp/RtmpPlayer.h b/src/Rtmp/RtmpPlayer.h
index 08c0bde0..4a712a67 100644
--- a/src/Rtmp/RtmpPlayer.h
+++ b/src/Rtmp/RtmpPlayer.h
@@ -58,8 +58,8 @@ protected:
     //from RtmpProtocol
     void onRtmpChunk(RtmpPacket &chunk_data) override;
     void onStreamDry(uint32_t stream_index) override;
-    void onSendRawData(const Buffer::Ptr &buffer) override {
-        send(buffer);
+    void onSendRawData(Buffer::Ptr buffer) override {
+        send(std::move(buffer));
     }
 
     template<typename FUNC>
diff --git a/src/Rtmp/RtmpProtocol.cpp b/src/Rtmp/RtmpProtocol.cpp
index 8c658bc1..55f45092 100644
--- a/src/Rtmp/RtmpProtocol.cpp
+++ b/src/Rtmp/RtmpProtocol.cpp
@@ -57,8 +57,8 @@ static string openssl_HMACsha256(const void *key, unsigned int key_len, const vo
 namespace mediakit {
 
 RtmpProtocol::RtmpProtocol() {
-    _next_step_func = [this]() {
-        handle_C0C1();
+    _next_step_func = [this](const char *data, uint64_t len) {
+        return handle_C0C1(data, len);
     };
 }
 
@@ -84,10 +84,10 @@ void RtmpProtocol::reset() {
     //////////Invoke Request//////////
     _send_req_id = 0;
     //////////Rtmp parser//////////
-    _recv_data_buf.clear();
+    HttpRequestSplitter::reset();
     _stream_index = STREAM_CONTROL;
-    _next_step_func = [this]() {
-        handle_C0C1();
+    _next_step_func = [this](const char *data, uint64_t len) {
+        return handle_C0C1(data, len);
     };
 }
 
@@ -218,7 +218,7 @@ void RtmpProtocol::sendRtmp(uint8_t type, uint32_t stream_index, const Buffer::P
     set_be24(header->body_size, buf->size());
     set_le32(header->stream_index, stream_index);
     //发送rtmp头
-    onSendRawData(buffer_header);
+    onSendRawData(std::move(buffer_header));
 
     //扩展时间戳字段
     BufferRaw::Ptr buffer_ext_stamp;
@@ -260,17 +260,20 @@ void RtmpProtocol::sendRtmp(uint8_t type, uint32_t stream_index, const Buffer::P
     }
 }
 
-void RtmpProtocol::onParseRtmp(const char *data, int size) {
-    _recv_data_buf.append(data, size);
-    //移动拷贝提高性能
-    function<void()> next_step_func(std::move(_next_step_func));
-    //执行下一步
-    next_step_func();
+void RtmpProtocol::onParseRtmp(const char *data, uint64_t size) {
+    input(data, size);
+}
 
+const char *RtmpProtocol::onSearchPacketTail(const char *data,uint64_t len){
+    //移动拷贝提高性能
+    auto next_step_func(std::move(_next_step_func));
+    //执行下一步
+    auto ret = next_step_func(data, len);
     if (!_next_step_func) {
         //为设置下一步，恢复之
         next_step_func.swap(_next_step_func);
     }
+    return ret;
 }
 
 ////for client////
@@ -280,57 +283,57 @@ void RtmpProtocol::startClientSession(const function<void()> &func) {
     onSendRawData(obtainBuffer(&handshake_head, 1));
     RtmpHandshake c1(0);
     onSendRawData(obtainBuffer((char *) (&c1), sizeof(c1)));
-    _next_step_func = [this, func]() {
+    _next_step_func = [this, func](const char *data, uint64_t len) {
         //等待 S0+S1+S2
-        handle_S0S1S2(func);
+        return handle_S0S1S2(data, len, func);
     };
 }
 
-void RtmpProtocol::handle_S0S1S2(const function<void()> &func) {
-    if (_recv_data_buf.size() < 1 + 2 * C1_HANDSHARK_SIZE) {
+const char* RtmpProtocol::handle_S0S1S2(const char *data, uint64_t len, const function<void()> &func) {
+    if (len < 1 + 2 * C1_HANDSHARK_SIZE) {
         //数据不够
-        return;
+        return nullptr;
     }
-    if (_recv_data_buf[0] != HANDSHAKE_PLAINTEXT) {
+    if (data[0] != HANDSHAKE_PLAINTEXT) {
         throw std::runtime_error("only plaintext[0x03] handshake supported");
     }
     //发送 C2
-    const char *pcC2 = _recv_data_buf.data() + 1;
+    const char *pcC2 = data + 1;
     onSendRawData(obtainBuffer(pcC2, C1_HANDSHARK_SIZE));
-    _recv_data_buf.erase(0, 1 + 2 * C1_HANDSHARK_SIZE);
     //握手结束
-    _next_step_func = [this]() {
+    _next_step_func = [this](const char *data, uint64_t len) {
         //握手结束并且开始进入解析命令模式
-        handle_rtmp();
+        return handle_rtmp(data, len);
     };
     func();
+    return data + 1 + 2 * C1_HANDSHARK_SIZE;
 }
 
 ////for server ////
-void RtmpProtocol::handle_C0C1() {
-    if (_recv_data_buf.size() < 1 + C1_HANDSHARK_SIZE) {
+const char * RtmpProtocol::handle_C0C1(const char *data, uint64_t len) {
+    if (len < 1 + C1_HANDSHARK_SIZE) {
         //need more data!
-        return;
+        return nullptr;
     }
-    if (_recv_data_buf[0] != HANDSHAKE_PLAINTEXT) {
+    if (data[0] != HANDSHAKE_PLAINTEXT) {
         throw std::runtime_error("only plaintext[0x03] handshake supported");
     }
-    if (memcmp(_recv_data_buf.data() + 5, "\x00\x00\x00\x00", 4) == 0) {
+    if (memcmp(data + 5, "\x00\x00\x00\x00", 4) == 0) {
         //simple handsharke
-        handle_C1_simple();
+        handle_C1_simple(data);
     } else {
 #ifdef ENABLE_OPENSSL
         //complex handsharke
-        handle_C1_complex();
+        handle_C1_complex(data);
 #else
         WarnL << "未打开ENABLE_OPENSSL宏，复杂握手采用简单方式处理，flash播放器可能无法播放！";
-        handle_C1_simple();
+        handle_C1_simple(data);
 #endif//ENABLE_OPENSSL
     }
-    _recv_data_buf.erase(0, 1 + C1_HANDSHARK_SIZE);
+    return data + 1 + C1_HANDSHARK_SIZE;
 }
 
-void RtmpProtocol::handle_C1_simple(){
+void RtmpProtocol::handle_C1_simple(const char *data){
     //发送S0
     char handshake_head = HANDSHAKE_PLAINTEXT;
     onSendRawData(obtainBuffer(&handshake_head, 1));
@@ -338,18 +341,19 @@ void RtmpProtocol::handle_C1_simple(){
     RtmpHandshake s1(0);
     onSendRawData(obtainBuffer((char *) &s1, C1_HANDSHARK_SIZE));
     //发送S2
-    onSendRawData(obtainBuffer(_recv_data_buf.data() + 1, C1_HANDSHARK_SIZE));
+    onSendRawData(obtainBuffer(data + 1, C1_HANDSHARK_SIZE));
     //等待C2
-    _next_step_func = [this]() {
-        handle_C2();
+    _next_step_func = [this](const char *data, uint64_t len) {
+        //握手结束并且开始进入解析命令模式
+        return handle_C2(data, len);
     };
 }
 
 #ifdef ENABLE_OPENSSL
-void RtmpProtocol::handle_C1_complex(){
+void RtmpProtocol::handle_C1_complex(const char *data){
     //参考自:http://blog.csdn.net/win_lin/article/details/13006803
     //skip c0,time,version
-    const char *c1_start = _recv_data_buf.data() + 1;
+    const char *c1_start = data + 1;
     const char *schema_start = c1_start + 8;
     char *digest_start;
     try {
@@ -385,7 +389,7 @@ void RtmpProtocol::handle_C1_complex(){
 //			InfoL << "schema1";
         } catch (std::exception &ex) {
 //			WarnL << "try rtmp complex schema1 failed:" <<  ex.what();
-            handle_C1_simple();
+            handle_C1_simple(data);
         }
     }
 }
@@ -502,44 +506,43 @@ void RtmpProtocol::send_complex_S0S1S2(int schemeType,const string &digest){
     memcpy((char *) &s2 + C1_HANDSHARK_SIZE - C1_DIGEST_SIZE, s2_digest.data(), C1_DIGEST_SIZE);
     onSendRawData(obtainBuffer((char *) &s2, sizeof(s2)));
     //等待C2
-    _next_step_func = [this]() {
-        handle_C2();
+    _next_step_func = [this](const char *data, uint64_t len) {
+        return handle_C2(data, len);
     };
 }
 #endif //ENABLE_OPENSSL
 
-void RtmpProtocol::handle_C2() {
-    if (_recv_data_buf.size() < C1_HANDSHARK_SIZE) {
+const char* RtmpProtocol::handle_C2(const char *data, uint64_t len) {
+    if (len < C1_HANDSHARK_SIZE) {
         //need more data!
-        return;
+        return nullptr;
     }
-    _recv_data_buf.erase(0, C1_HANDSHARK_SIZE);
-    //握手结束，进入命令模式
-    if (!_recv_data_buf.empty()) {
-        handle_rtmp();
-    }
-    _next_step_func = [this]() {
-        handle_rtmp();
+    _next_step_func = [this](const char *data, uint64_t len) {
+        return handle_rtmp(data, len);
     };
+
+    //握手结束，进入命令模式
+    return handle_rtmp(data + C1_HANDSHARK_SIZE, len - C1_HANDSHARK_SIZE);
 }
 
 static const size_t HEADER_LENGTH[] = {12, 8, 4, 1};
 
-void RtmpProtocol::handle_rtmp() {
-    while (!_recv_data_buf.empty()) {
+const char* RtmpProtocol::handle_rtmp(const char *data, uint64_t len) {
+    auto ptr = data;
+    while (len) {
         int offset = 0;
-        uint8_t flags = _recv_data_buf[0];
+        uint8_t flags = ptr[0];
         size_t header_len = HEADER_LENGTH[flags >> 6];
         _now_chunk_id = flags & 0x3f;
         switch (_now_chunk_id) {
             case 0: {
                 //0 值表示二字节形式，并且 ID 范围 64 - 319
                 //(第二个字节 + 64)。
-                if (_recv_data_buf.size() < 2) {
+                if (len < 2) {
                     //need more data
-                    return;
+                    return ptr;
                 }
-                _now_chunk_id = 64 + (uint8_t) (_recv_data_buf[1]);
+                _now_chunk_id = 64 + (uint8_t) (ptr[1]);
                 offset = 1;
                 break;
             }
@@ -547,11 +550,11 @@ void RtmpProtocol::handle_rtmp() {
             case 1: {
                 //1 值表示三字节形式，并且 ID 范围为 64 - 65599
                 //((第三个字节) * 256 + 第二个字节 + 64)。
-                if (_recv_data_buf.size() < 3) {
+                if (len < 3) {
                     //need more data
-                    return;
+                    return ptr;
                 }
-                _now_chunk_id = 64 + ((uint8_t) (_recv_data_buf[2]) << 8) + (uint8_t) (_recv_data_buf[1]);
+                _now_chunk_id = 64 + ((uint8_t) (ptr[2]) << 8) + (uint8_t) (ptr[1]);
                 offset = 2;
                 break;
             }
@@ -560,12 +563,12 @@ void RtmpProtocol::handle_rtmp() {
             default : break;
         }
 
-        if (_recv_data_buf.size() < header_len + offset) {
+        if (len < header_len + offset) {
             //need more data
-            return;
+            return ptr;
         }
 
-        RtmpHeader &header = *((RtmpHeader *) (_recv_data_buf.data() + offset));
+        RtmpHeader &header = *((RtmpHeader *) (ptr + offset));
         auto &chunk_data = _map_chunk_data[_now_chunk_id];
         chunk_data.chunk_id = _now_chunk_id;
         switch (header_len) {
@@ -581,11 +584,11 @@ void RtmpProtocol::handle_rtmp() {
 
         auto time_stamp = chunk_data.ts_field;
         if (chunk_data.ts_field == 0xFFFFFF) {
-            if (_recv_data_buf.size() < header_len + offset + 4) {
+            if (len < header_len + offset + 4) {
                 //need more data
-                return;
+                return ptr;
             }
-            time_stamp = load_be32(_recv_data_buf.data() + offset + header_len);
+            time_stamp = load_be32(ptr + offset + header_len);
             offset += 4;
         }
 
@@ -593,27 +596,29 @@ void RtmpProtocol::handle_rtmp() {
             throw std::runtime_error("非法的bodySize");
         }
 
-        auto iMore = min(_chunk_size_in, chunk_data.body_size - chunk_data.buffer.size());
-        if (_recv_data_buf.size() < header_len + offset + iMore) {
+        auto more = min(_chunk_size_in, (size_t)(chunk_data.body_size - chunk_data.buffer.size()));
+        if (len < header_len + offset + more) {
             //need more data
-            return;
+            return ptr;
         }
-        chunk_data.buffer.append(_recv_data_buf, header_len + offset, iMore);
-        _recv_data_buf.erase(0, header_len + offset + iMore);
+        chunk_data.buffer.append(ptr + header_len + offset, more);
+        ptr += header_len + offset + more;
+        len -= header_len + offset + more;
         if (chunk_data.buffer.size() == chunk_data.body_size) {
             //frame is ready
             _now_stream_index = chunk_data.stream_index;
             chunk_data.time_stamp = time_stamp + (chunk_data.is_abs_stamp ? 0 : chunk_data.time_stamp);
             if (chunk_data.body_size) {
-                handle_rtmpChunk(chunk_data);
+                handle_chunk(chunk_data);
             }
             chunk_data.buffer.clear();
             chunk_data.is_abs_stamp = false;
         }
     }
+    return ptr;
 }
 
-void RtmpProtocol::handle_rtmpChunk(RtmpPacket& chunk_data) {
+void RtmpProtocol::handle_chunk(RtmpPacket& chunk_data) {
     switch (chunk_data.type_id) {
         case MSG_ACK: {
             if (chunk_data.buffer.size() < 4) {
@@ -713,7 +718,7 @@ void RtmpProtocol::handle_rtmpChunk(RtmpPacket& chunk_data) {
 
         case MSG_AGGREGATE: {
             auto ptr = (uint8_t *) chunk_data.buffer.data();
-            auto ptr_tail = ptr + chunk_data.buffer.length();
+            auto ptr_tail = ptr + chunk_data.buffer.size();
             while (ptr + 8 + 3 < ptr_tail) {
                 auto type = *ptr;
                 ptr += 1;
@@ -730,14 +735,13 @@ void RtmpProtocol::handle_rtmpChunk(RtmpPacket& chunk_data) {
                     break;
                 }
                 RtmpPacket sub_packet;
-                sub_packet.buffer.resize(size);
-                memcpy((char *) sub_packet.buffer.data(), ptr, size);
+                sub_packet.buffer.assign((char *)ptr, size);
                 sub_packet.type_id = type;
                 sub_packet.body_size = size;
                 sub_packet.time_stamp = ts;
                 sub_packet.stream_index = chunk_data.stream_index;
                 sub_packet.chunk_id = chunk_data.chunk_id;
-                handle_rtmpChunk(sub_packet);
+                handle_chunk(sub_packet);
                 ptr += size;
             }
             break;
diff --git a/src/Rtmp/RtmpProtocol.h b/src/Rtmp/RtmpProtocol.h
index 6f2df9dd..e20fce30 100644
--- a/src/Rtmp/RtmpProtocol.h
+++ b/src/Rtmp/RtmpProtocol.h
@@ -21,23 +21,24 @@
 #include "Util/TimeTicker.h"
 #include "Network/Socket.h"
 #include "Util/ResourcePool.h"
+#include "Http/HttpRequestSplitter.h"
 
 using namespace std;
 using namespace toolkit;
 
 namespace mediakit {
 
-class RtmpProtocol {
+class RtmpProtocol : public HttpRequestSplitter{
 public:
     RtmpProtocol();
     virtual ~RtmpProtocol();
 
-    void onParseRtmp(const char *data, int size);
+    void onParseRtmp(const char *data, uint64_t size);
     //作为客户端发送c0c1，等待s0s1s2并且回调
     void startClientSession(const function<void()> &cb);
 
 protected:
-    virtual void onSendRawData(const Buffer::Ptr &buffer) = 0;
+    virtual void onSendRawData(Buffer::Ptr buffer) = 0;
     virtual void onRtmpChunk(RtmpPacket &chunk_data) = 0;
     virtual void onStreamBegin(uint32_t stream_index){
         _stream_index = stream_index;
@@ -45,6 +46,11 @@ protected:
     virtual void onStreamEof(uint32_t stream_index){};
     virtual void onStreamDry(uint32_t stream_index){};
 
+protected:
+    //// HttpRequestSplitter override ////
+    int64_t onRecvHeader(const char *data,uint64_t len) override { return 0; }
+    const char *onSearchPacketTail(const char *data,uint64_t len) override;
+
 protected:
     void reset();
     BufferRaw::Ptr obtainBuffer();
@@ -66,20 +72,20 @@ protected:
     void sendRtmp(uint8_t type, uint32_t stream_index, const Buffer::Ptr &buffer, uint32_t stamp, int chunk_id);
 
 private:
-    void handle_S0S1S2(const function<void()> &func);
-    void handle_C0C1();
-    void handle_C1_simple();
+    void handle_C1_simple(const char *data);
 #ifdef ENABLE_OPENSSL
-    void handle_C1_complex();
+    void handle_C1_complex(const char *data);
     string get_C1_digest(const uint8_t *ptr,char **digestPos);
     string get_C1_key(const uint8_t *ptr);
     void check_C1_Digest(const string &digest,const string &data);
     void send_complex_S0S1S2(int schemeType,const string &digest);
 #endif //ENABLE_OPENSSL
 
-    void handle_C2();
-    void handle_rtmp();
-    void handle_rtmpChunk(RtmpPacket &chunk_data);
+    const char* handle_S0S1S2(const char *data, uint64_t len, const function<void()> &func);
+    const char* handle_C0C1(const char *data, uint64_t len);
+    const char* handle_C2(const char *data, uint64_t len);
+    const char* handle_rtmp(const char *data, uint64_t len);
+    void handle_chunk(RtmpPacket &chunk_data);
 
 protected:
     int _send_req_id = 0;
@@ -100,8 +106,7 @@ private:
     uint32_t _bandwidth = 2500000;
     uint8_t _band_limit_type = 2;
     //////////Rtmp parser//////////
-    string _recv_data_buf;
-    function<void()> _next_step_func;
+    function<const char * (const char *data, uint64_t len)> _next_step_func;
     ////////////Chunk////////////
     unordered_map<int, RtmpPacket> _map_chunk_data;
 };
diff --git a/src/Rtmp/RtmpPusher.cpp b/src/Rtmp/RtmpPusher.cpp
index 201d6f9e..a7d08cf5 100644
--- a/src/Rtmp/RtmpPusher.cpp
+++ b/src/Rtmp/RtmpPusher.cpp
@@ -119,9 +119,6 @@ void RtmpPusher::onConnect(const SockException &err){
         onPublishResult(err, false);
         return;
     }
-    //推流器不需要多大的接收缓存，节省内存占用
-    getSock()->setReadBuffer(std::make_shared<BufferRaw>(1 * 1024));
-
     weak_ptr<RtmpPusher> weak_self = dynamic_pointer_cast<RtmpPusher>(shared_from_this());
     startClientSession([weak_self]() {
         auto strong_self = weak_self.lock();
diff --git a/src/Rtmp/RtmpPusher.h b/src/Rtmp/RtmpPusher.h
index 3d7e7044..a1ac0d9c 100644
--- a/src/Rtmp/RtmpPusher.h
+++ b/src/Rtmp/RtmpPusher.h
@@ -43,8 +43,8 @@ protected:
 
     //for RtmpProtocol override
     void onRtmpChunk(RtmpPacket &chunk_data) override;
-    void onSendRawData(const Buffer::Ptr &buffer) override{
-        send(buffer);
+    void onSendRawData(Buffer::Ptr buffer) override{
+        send(std::move(buffer));
     }
 
 private:
diff --git a/src/Rtmp/RtmpSession.cpp b/src/Rtmp/RtmpSession.cpp
index f992385c..9b82600f 100644
--- a/src/Rtmp/RtmpSession.cpp
+++ b/src/Rtmp/RtmpSession.cpp
@@ -17,8 +17,6 @@ RtmpSession::RtmpSession(const Socket::Ptr &sock) : TcpSession(sock) {
     DebugP(this);
     GET_CONFIG(uint32_t,keep_alive_sec,Rtmp::kKeepAliveSecond);
     sock->setSendTimeOutSecond(keep_alive_sec);
-    //起始接收buffer缓存设置为4K，节省内存
-    sock->setReadBuffer(std::make_shared<BufferRaw>(4 * 1024));
 }
 
 RtmpSession::~RtmpSession() {
@@ -151,9 +149,6 @@ void RtmpSession::onCmd_publish(AMFDecoder &dec) {
         _publisher_src->setListener(dynamic_pointer_cast<MediaSourceEvent>(shared_from_this()));
         //设置转协议
         _publisher_src->setProtocolTranslation(enableHls, enableMP4);
-
-        //如果是rtmp推流客户端，那么加大TCP接收缓存，这样能提升接收性能
-        getSock()->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
         setSocketFlags();
     };
 
diff --git a/src/Rtmp/RtmpSession.h b/src/Rtmp/RtmpSession.h
index 239a7781..e608ca4c 100644
--- a/src/Rtmp/RtmpSession.h
+++ b/src/Rtmp/RtmpSession.h
@@ -56,9 +56,9 @@ private:
     void setMetaData(AMFDecoder &dec);
 
     void onSendMedia(const RtmpPacket::Ptr &pkt);
-    void onSendRawData(const Buffer::Ptr &buffer) override{
+    void onSendRawData(Buffer::Ptr buffer) override{
         _total_bytes += buffer->size();
-        send(buffer);
+        send(std::move(buffer));
     }
     void onRtmpChunk(RtmpPacket &chunk_data) override;
 
diff --git a/src/Rtmp/amf.cpp b/src/Rtmp/amf.cpp
index ca4c8077..c2db49a3 100644
--- a/src/Rtmp/amf.cpp
+++ b/src/Rtmp/amf.cpp
@@ -539,7 +539,7 @@ std::string AMFDecoder::load<std::string>() {
     if (pos + str_len > buf.size()) {
         throw std::runtime_error("Not enough data");
     }
-    std::string s(buf, pos, str_len);
+    std::string s = buf.substr(pos, str_len);
     pos += str_len;
     return s;
 }
@@ -612,7 +612,7 @@ std::string AMFDecoder::load_key() {
     if (pos + str_len > buf.size()) {
         throw std::runtime_error("Not enough data");
     }
-    std::string s(buf, pos, str_len);
+    std::string s = buf.substr(pos, str_len);
     pos += str_len;
     return s;
 
@@ -680,7 +680,7 @@ AMFValue AMFDecoder::load_arr() {
     return object;
 }
 
-AMFDecoder::AMFDecoder(const std::string &buf_in, size_t pos_in, int version_in) :
+AMFDecoder::AMFDecoder(const BufferLikeString &buf_in, size_t pos_in, int version_in) :
         buf(buf_in), pos(pos_in), version(version_in) {
 }
 
diff --git a/src/Rtmp/amf.h b/src/Rtmp/amf.h
index 9b29b11e..44153da3 100644
--- a/src/Rtmp/amf.h
+++ b/src/Rtmp/amf.h
@@ -18,7 +18,9 @@
 #include <map>
 #include <stdexcept>
 #include <functional>
+#include "Network/Buffer.h"
 using namespace std;
+using namespace toolkit;
 
 enum AMFType {
     AMF_NUMBER,
@@ -81,7 +83,7 @@ private:
 
 class AMFDecoder {
 public:
-    AMFDecoder(const std::string &buf, size_t pos, int version = 0);
+    AMFDecoder(const BufferLikeString &buf, size_t pos, int version = 0);
     template<typename TP>
     TP load();
 private:
@@ -92,7 +94,7 @@ private:
     uint8_t front();
     uint8_t pop_front();
 private:
-    const std::string &buf;
+    const BufferLikeString &buf;
     size_t pos;
     int version;
 };
diff --git a/src/Rtp/Decoder.cpp b/src/Rtp/Decoder.cpp
index 09090d76..9df23287 100644
--- a/src/Rtp/Decoder.cpp
+++ b/src/Rtp/Decoder.cpp
@@ -102,11 +102,12 @@ void FrameMerger::inputFrame(const Frame::Ptr &frame,const function<void(uint32_
         Frame::Ptr back = _frameCached.back();
         Buffer::Ptr merged_frame = back;
         if(_frameCached.size() != 1){
-            string merged;
+            BufferLikeString merged;
+            merged.reserve(back->size() + 1024);
             _frameCached.for_each([&](const Frame::Ptr &frame){
                 merged.append(frame->data(),frame->size());
             });
-            merged_frame = std::make_shared<BufferString>(std::move(merged));
+            merged_frame = std::make_shared<BufferOffset<BufferLikeString> >(std::move(merged));
         }
         cb(back->dts(),back->pts(),merged_frame);
         _frameCached.clear();
diff --git a/src/Rtp/GB28181Process.cpp b/src/Rtp/GB28181Process.cpp
index 0006d2eb..27947533 100644
--- a/src/Rtp/GB28181Process.cpp
+++ b/src/Rtp/GB28181Process.cpp
@@ -69,7 +69,7 @@ void GB28181Process::onRtpSorted(const RtpPacket::Ptr &rtp, int) {
     _rtp_decoder->inputRtp(rtp, false);
 }
 
-const char *GB28181Process::onSearchPacketTail(const char *packet,int bytes){
+const char *GB28181Process::onSearchPacketTail(const char *packet,uint64_t bytes){
     try {
         auto ret = _decoder->input((uint8_t *) packet, bytes);
         if (ret > 0) {
diff --git a/src/Rtp/GB28181Process.h b/src/Rtp/GB28181Process.h
index 536af856..76da3f1d 100644
--- a/src/Rtp/GB28181Process.h
+++ b/src/Rtp/GB28181Process.h
@@ -37,7 +37,7 @@ public:
 
 protected:
     void onRtpSorted(const RtpPacket::Ptr &rtp, int track_index) override ;
-    const char *onSearchPacketTail(const char *data,int len) override;
+    const char *onSearchPacketTail(const char *data,uint64_t len) override;
     int64_t onRecvHeader(const char *data,uint64_t len) override { return 0; };
 
 private:
diff --git a/src/Rtp/PSEncoder.cpp b/src/Rtp/PSEncoder.cpp
index f2b47693..7bd55d3f 100644
--- a/src/Rtp/PSEncoder.cpp
+++ b/src/Rtp/PSEncoder.cpp
@@ -129,7 +129,8 @@ void PSEncoder::inputFrame(const Frame::Ptr &frame) {
                 Frame::Ptr back = _frameCached.back();
                 Buffer::Ptr merged_frame = back;
                 if (_frameCached.size() != 1) {
-                    string merged;
+                    BufferLikeString merged;
+                    merged.reserve(back->size() + 1024);
                     _frameCached.for_each([&](const Frame::Ptr &frame) {
                         if (frame->prefixSize()) {
                             merged.append(frame->data(), frame->size());
@@ -138,7 +139,7 @@ void PSEncoder::inputFrame(const Frame::Ptr &frame) {
                             merged.append(frame->data(), frame->size());
                         }
                     });
-                    merged_frame = std::make_shared<BufferString>(std::move(merged));
+                    merged_frame = std::make_shared<BufferOffset<BufferLikeString> >(std::move(merged));
                 }
                 track_info.stamp.revise(back->dts(), back->pts(), dts_out, pts_out);
                 _timestamp = dts_out;
diff --git a/src/Rtp/RtpSplitter.cpp b/src/Rtp/RtpSplitter.cpp
index 74b20c2e..0bb76d59 100644
--- a/src/Rtp/RtpSplitter.cpp
+++ b/src/Rtp/RtpSplitter.cpp
@@ -9,7 +9,6 @@
  */
 
 #if defined(ENABLE_RTPPROXY)
-#include <netinet/in.h>
 #include <string.h>
 #include "RtpSplitter.h"
 namespace mediakit{
@@ -35,14 +34,14 @@ int64_t RtpSplitter::onRecvHeader(const char *data,uint64_t len){
     return 0;
 }
 
-static bool isEhome(const char *data, int len){
+static bool isEhome(const char *data, uint64_t len){
     if (len < 4) {
         return false;
     }
     return memcmp(data, kEHOME_MAGIC, sizeof(kEHOME_MAGIC) - 1) == 0;
 }
 
-const char *RtpSplitter::onSearchPacketTail(const char *data, int len) {
+const char *RtpSplitter::onSearchPacketTail(const char *data, uint64_t len) {
     if (len < 4) {
         //数据不够
         return nullptr;
@@ -70,7 +69,7 @@ const char *RtpSplitter::onSearchPacketTail(const char *data, int len) {
     return onSearchPacketTail_l(data, len);
 }
 
-const char *RtpSplitter::onSearchPacketTail_l(const char *data, int len) {
+const char *RtpSplitter::onSearchPacketTail_l(const char *data, uint64_t len) {
     //这是rtp包
     uint16_t length = (((uint8_t *) data)[0] << 8) | ((uint8_t *) data)[1];
     if (len < length + 2) {
diff --git a/src/Rtp/RtpSplitter.h b/src/Rtp/RtpSplitter.h
index d81cdd0e..9f895c21 100644
--- a/src/Rtp/RtpSplitter.h
+++ b/src/Rtp/RtpSplitter.h
@@ -31,8 +31,8 @@ protected:
 
 protected:
     int64_t onRecvHeader(const char *data, uint64_t len) override;
-    const char *onSearchPacketTail(const char *data, int len) override;
-    const char *onSearchPacketTail_l(const char *data, int len);
+    const char *onSearchPacketTail(const char *data, uint64_t len) override;
+    const char *onSearchPacketTail_l(const char *data, uint64_t len);
 
 private:
     int _offset = 0;
diff --git a/src/Rtp/TSDecoder.cpp b/src/Rtp/TSDecoder.cpp
index 0f25c20e..92fb26dd 100644
--- a/src/Rtp/TSDecoder.cpp
+++ b/src/Rtp/TSDecoder.cpp
@@ -28,7 +28,7 @@ int64_t TSSegment::onRecvHeader(const char *data, uint64_t len) {
     return 0;
 }
 
-const char *TSSegment::onSearchPacketTail(const char *data, int len) {
+const char *TSSegment::onSearchPacketTail(const char *data, uint64_t len) {
     if (len < _size + 1) {
         if (len == _size && ((uint8_t *) data)[0] == TS_SYNC_BYTE) {
             return data + _size;
diff --git a/src/Rtp/TSDecoder.h b/src/Rtp/TSDecoder.h
index 42841404..db6e8b4b 100644
--- a/src/Rtp/TSDecoder.h
+++ b/src/Rtp/TSDecoder.h
@@ -31,7 +31,7 @@ public:
     static bool isTSPacket(const char *data, int len);
 protected:
     int64_t onRecvHeader(const char *data, uint64_t len) override ;
-    const char *onSearchPacketTail(const char *data, int len) override ;
+    const char *onSearchPacketTail(const char *data, uint64_t len) override ;
 private:
     int _size;
     onSegment _onSegment;
diff --git a/src/Rtsp/RtspPlayer.cpp b/src/Rtsp/RtspPlayer.cpp
index dc899a5d..747de9e5 100644
--- a/src/Rtsp/RtspPlayer.cpp
+++ b/src/Rtsp/RtspPlayer.cpp
@@ -704,7 +704,8 @@ void RtspPlayer::sendRtspRequest(const string &cmd, const string &url,const StrC
     for (auto &pr : header){
         printer << pr.first << ": " << pr.second << "\r\n";
     }
-    SockSender::send(printer << "\r\n");
+    printer << "\r\n";
+    SockSender::send(std::move(printer));
 }
 
 void RtspPlayer::onRecvRTP_l(const RtpPacket::Ptr &rtp, const SdpTrack::Ptr &track) {
diff --git a/src/Rtsp/RtspPusher.cpp b/src/Rtsp/RtspPusher.cpp
index 4728c8b4..0172ca5b 100644
--- a/src/Rtsp/RtspPusher.cpp
+++ b/src/Rtsp/RtspPusher.cpp
@@ -121,8 +121,6 @@ void RtspPusher::onConnect(const SockException &err) {
         onPublishResult(err, false);
         return;
     }
-    //推流器不需要多大的接收缓存，节省内存占用
-    getSock()->setReadBuffer(std::make_shared<BufferRaw>(1 * 1024));
     sendAnnounce();
 }
 
@@ -318,7 +316,7 @@ inline void RtspPusher::sendRtpPacket(const RtspMediaSource::RingDataType &pkt)
                     setSendFlushFlag(true);
                 }
                 BufferRtp::Ptr buffer(new BufferRtp(rtp));
-                send(buffer);
+                send(std::move(buffer));
             });
             break;
         }
@@ -335,7 +333,7 @@ inline void RtspPusher::sendRtpPacket(const RtspMediaSource::RingDataType &pkt)
                 }
 
                 BufferRtp::Ptr buffer(new BufferRtp(rtp, 4));
-                pSock->send(buffer, nullptr, 0, ++i == size);
+                pSock->send(std::move(buffer), nullptr, 0, ++i == size);
             });
             break;
         }
@@ -475,7 +473,7 @@ void RtspPusher::sendRtspRequest(const string &cmd, const string &url,const StrC
     if (!sdp.empty()) {
         printer << sdp;
     }
-    SockSender::send(printer);
+    SockSender::send(std::move(printer));
 }
 
 
diff --git a/src/Rtsp/RtspSession.cpp b/src/Rtsp/RtspSession.cpp
index e010bd3c..40c42f47 100644
--- a/src/Rtsp/RtspSession.cpp
+++ b/src/Rtsp/RtspSession.cpp
@@ -60,8 +60,6 @@ RtspSession::RtspSession(const Socket::Ptr &sock) : TcpSession(sock) {
     DebugP(this);
     GET_CONFIG(uint32_t,keep_alive_sec,Rtsp::kKeepAliveSecond);
     sock->setSendTimeOutSecond(keep_alive_sec);
-    //起始接收buffer缓存设置为4K，节省内存
-    sock->setReadBuffer(std::make_shared<BufferRaw>(4 * 1024));
 }
 
 RtspSession::~RtspSession() {
@@ -270,8 +268,7 @@ void RtspSession::handleReq_RECORD(const Parser &parser){
         rtp_info.pop_back();
         sendRtspResponse("200 OK", {"RTP-Info",rtp_info});
         if(_rtp_type == Rtsp::RTP_TCP){
-            //如果是rtsp推流服务器，并且是TCP推流，那么加大TCP接收缓存，这样能提升接收性能
-            getSock()->setReadBuffer(std::make_shared<BufferRaw>(256 * 1024));
+            //如果是rtsp推流服务器，并且是TCP推流，设置socket flags,，这样能提升接收性能
             setSocketFlags();
         }
     };
@@ -1030,15 +1027,15 @@ bool RtspSession::sendRtspResponse(const string &res_code, const StrCaseMap &hea
         printer << sdp;
     }
 //	DebugP(this) << printer;
-    return send(std::make_shared<BufferString>(printer)) > 0 ;
+    return send(std::make_shared<BufferString>(std::move(printer))) > 0 ;
 }
 
-int RtspSession::send(const Buffer::Ptr &pkt){
+int RtspSession::send(Buffer::Ptr pkt){
 //	if(!_enableSendRtp){
 //		DebugP(this) << pkt->data();
 //	}
     _bytes_usage += pkt->size();
-    return TcpSession::send(pkt);
+    return TcpSession::send(std::move(pkt));
 }
 
 bool RtspSession::sendRtspResponse(const string &res_code, const std::initializer_list<string> &header, const string &sdp, const char *protocol) {
@@ -1162,7 +1159,7 @@ void RtspSession::sendRtpPacket(const RtspMediaSource::RingDataType &pkt) {
                 }
                 BufferRtp::Ptr buffer(new BufferRtp(rtp, 4));
                 _bytes_usage += buffer->size();
-                pSock->send(buffer, nullptr, 0, ++i == size);
+                pSock->send(std::move(buffer), nullptr, 0, ++i == size);
             });
         }
             break;
diff --git a/src/Rtsp/RtspSession.h b/src/Rtsp/RtspSession.h
index cd691c7b..23dd52bb 100644
--- a/src/Rtsp/RtspSession.h
+++ b/src/Rtsp/RtspSession.h
@@ -93,7 +93,7 @@ protected:
     std::shared_ptr<SockInfo> getOriginSock(MediaSource &sender) const override;
 
     /////TcpSession override////
-    int send(const Buffer::Ptr &pkt) override;
+    int send(Buffer::Ptr pkt) override;
     //收到RTCP包回调
     virtual void onRtcpPacket(int track_idx, SdpTrack::Ptr &track, unsigned char *data, unsigned int len);
 
diff --git a/src/Rtsp/RtspSplitter.cpp b/src/Rtsp/RtspSplitter.cpp
index 1c97f369..527659af 100644
--- a/src/Rtsp/RtspSplitter.cpp
+++ b/src/Rtsp/RtspSplitter.cpp
@@ -15,7 +15,7 @@
 
 namespace mediakit{
 
-const char *RtspSplitter::onSearchPacketTail(const char *data, int len) {
+const char *RtspSplitter::onSearchPacketTail(const char *data, uint64_t len) {
     auto ret = onSearchPacketTail_l(data, len);
     if(ret){
         return ret;
@@ -32,7 +32,7 @@ const char *RtspSplitter::onSearchPacketTail(const char *data, int len) {
     return ret;
 }
 
-const char *RtspSplitter::onSearchPacketTail_l(const char *data, int len) {
+const char *RtspSplitter::onSearchPacketTail_l(const char *data, uint64_t len) {
     if(!_enableRecvRtp || data[0] != '$'){
         //这是rtsp包
         _isRtpPacket = false;
diff --git a/src/Rtsp/RtspSplitter.h b/src/Rtsp/RtspSplitter.h
index 3cd35821..a1a443c2 100644
--- a/src/Rtsp/RtspSplitter.h
+++ b/src/Rtsp/RtspSplitter.h
@@ -47,8 +47,8 @@ protected:
      */
     virtual int64_t getContentLength(Parser &parser);
 protected:
-    const char *onSearchPacketTail(const char *data,int len) override ;
-    const char *onSearchPacketTail_l(const char *data,int len) ;
+    const char *onSearchPacketTail(const char *data,uint64_t len) override ;
+    const char *onSearchPacketTail_l(const char *data,uint64_t len) ;
     int64_t onRecvHeader(const char *data,uint64_t len) override;
     void onRecvContent(const char *data,uint64_t len) override;
 private: