diff --git a/trunk/src/app/srs_app_srt_server.cpp b/trunk/src/app/srs_app_srt_server.cpp
index 0a23fcc61..38baab9ab 100644
--- a/trunk/src/app/srs_app_srt_server.cpp
+++ b/trunk/src/app/srs_app_srt_server.cpp
@@ -359,7 +359,7 @@ srs_error_t SrsSrtEventLoop::initialize()
 {
     srs_error_t err = srs_success;
 
-    srt_poller_ = new SrsSrtPoller();
+    srt_poller_ = srs_srt_poller_new();
 
     if ((err = srt_poller_->initialize()) != srs_success) {
         return srs_error_wrap(err, "srt poller initialize");
diff --git a/trunk/src/app/srs_app_srt_server.hpp b/trunk/src/app/srs_app_srt_server.hpp
index 886ac21f9..386806cf8 100644
--- a/trunk/src/app/srs_app_srt_server.hpp
+++ b/trunk/src/app/srs_app_srt_server.hpp
@@ -111,7 +111,7 @@ public:
     SrsSrtEventLoop();
     virtual ~SrsSrtEventLoop();
 public:
-    SrsSrtPoller* poller() { return srt_poller_; }
+    ISrsSrtPoller* poller() { return srt_poller_; }
 public:
     srs_error_t initialize();
     srs_error_t start();
@@ -119,7 +119,7 @@ public:
 public:
     virtual srs_error_t cycle();
 private:
-    SrsSrtPoller* srt_poller_;
+    ISrsSrtPoller* srt_poller_;
     SrsCoroutine* trd_;
 };
 
diff --git a/trunk/src/protocol/srs_protocol_srt.cpp b/trunk/src/protocol/srs_protocol_srt.cpp
index 6892a4839..0e61aadfc 100644
--- a/trunk/src/protocol/srs_protocol_srt.cpp
+++ b/trunk/src/protocol/srs_protocol_srt.cpp
@@ -439,6 +439,24 @@ srs_error_t SrsSrtStat::fetch(SRTSOCKET srt_fd, bool clear)
     return err;
 }
 
+class SrsSrtPoller : public ISrsSrtPoller
+{
+public:
+    SrsSrtPoller();
+    virtual ~SrsSrtPoller();
+public:
+    srs_error_t initialize();
+    srs_error_t add_socket(SrsSrtSocket* srt_skt);
+    srs_error_t mod_socket(SrsSrtSocket* srt_skt);
+    srs_error_t del_socket(SrsSrtSocket* srt_skt);
+    srs_error_t wait(int timeout_ms, int* pn_fds);
+private:
+    // Find SrsSrtSocket* context by SRTSOCKET.
+    std::map<SRTSOCKET, SrsSrtSocket*> fd_sockets_;
+    int srt_epoller_fd_;
+    std::vector<SRT_EPOLL_EVENT> events_;
+};
+
 SrsSrtPoller::SrsSrtPoller()
 {
     srt_epoller_fd_ = -1;
@@ -556,7 +574,20 @@ srs_error_t SrsSrtPoller::mod_socket(SrsSrtSocket* srt_skt)
     return err;
 }
 
-SrsSrtSocket::SrsSrtSocket(SrsSrtPoller* srt_poller, SRTSOCKET srt_fd)
+ISrsSrtPoller::ISrsSrtPoller()
+{
+}
+
+ISrsSrtPoller::~ISrsSrtPoller()
+{
+}
+
+ISrsSrtPoller* srs_srt_poller_new()
+{
+    return new SrsSrtPoller();
+}
+
+SrsSrtSocket::SrsSrtSocket(ISrsSrtPoller* srt_poller, SRTSOCKET srt_fd)
 {
     srt_poller_ = srt_poller;
     srt_fd_ = srt_fd;
diff --git a/trunk/src/protocol/srs_protocol_srt.hpp b/trunk/src/protocol/srs_protocol_srt.hpp
index 4cbb5a7f8..df2cb309b 100644
--- a/trunk/src/protocol/srs_protocol_srt.hpp
+++ b/trunk/src/protocol/srs_protocol_srt.hpp
@@ -86,31 +86,27 @@ public:
 };
 
 // Srt poller, subscribe/unsubscribed events and wait them fired.
-class SrsSrtPoller 
+class ISrsSrtPoller
 {
 public:
-    SrsSrtPoller();
-    virtual ~SrsSrtPoller();
+    ISrsSrtPoller();
+    virtual ~ISrsSrtPoller();
 public:
-    srs_error_t initialize();
-    srs_error_t add_socket(SrsSrtSocket* srt_skt);
-    srs_error_t mod_socket(SrsSrtSocket* srt_skt);
-    srs_error_t del_socket(SrsSrtSocket* srt_skt);
+    virtual srs_error_t initialize() = 0;
+    virtual srs_error_t add_socket(SrsSrtSocket* srt_skt) = 0;
+    virtual srs_error_t mod_socket(SrsSrtSocket* srt_skt) = 0;
+    virtual srs_error_t del_socket(SrsSrtSocket* srt_skt) = 0;
     // Wait for the fds in its epoll to be fired in specified timeout_ms, where the pn_fds is the number of active fds.
     // Note that for ST, please always use timeout_ms(0) and switch coroutine by yourself.
-    srs_error_t wait(int timeout_ms, int* pn_fds);
-private:
-    // Find SrsSrtSocket* context by SRTSOCKET.
-    std::map<SRTSOCKET, SrsSrtSocket*> fd_sockets_;
-    int srt_epoller_fd_;
-    std::vector<SRT_EPOLL_EVENT> events_;
+    virtual srs_error_t wait(int timeout_ms, int* pn_fds) = 0;
 };
+ISrsSrtPoller* srs_srt_poller_new();
 
 // Srt ST socket, wrap SRT io and make it adapt to ST-thread.
 class SrsSrtSocket
 {
 public:
-    SrsSrtSocket(SrsSrtPoller* srt_poller, SRTSOCKET srt_fd);
+    SrsSrtSocket(ISrsSrtPoller* srt_poller, SRTSOCKET srt_fd);
     virtual ~SrsSrtSocket();
 public: // IO API
     srs_error_t connect(const std::string& ip, int port);
@@ -171,7 +167,7 @@ private:
     // Event of this socket subscribed.
     int events_;
     // Srt poller which this socket attach to.
-    SrsSrtPoller* srt_poller_;
+    ISrsSrtPoller* srt_poller_;
 };
 
 #endif
diff --git a/trunk/src/utest/srs_utest_srt.cpp b/trunk/src/utest/srs_utest_srt.cpp
index 1fd5d966d..bd3dd49a1 100644
--- a/trunk/src/utest/srs_utest_srt.cpp
+++ b/trunk/src/utest/srs_utest_srt.cpp
@@ -23,7 +23,7 @@ VOID TEST(ServiceSrtPoller, SrtPollOperateSocket)
 {
     srs_error_t err = srs_success;
 
-    SrsSrtPoller* srt_poller = new SrsSrtPoller();
+    ISrsSrtPoller* srt_poller = srs_srt_poller_new();
     HELPER_EXPECT_SUCCESS(srt_poller->initialize());
 
     SRTSOCKET srt_fd = SRT_INVALID_SOCK;