diff --git a/trunk/src/utest/srs_utest.cpp b/trunk/src/utest/srs_utest.cpp
index a58e5814c..1a223dedd 100644
--- a/trunk/src/utest/srs_utest.cpp
+++ b/trunk/src/utest/srs_utest.cpp
@@ -36,67 +36,6 @@ ISrsThreadContext* _srs_context = new ISrsThreadContext();
 SrsConfig* _srs_config = NULL;
 SrsServer* _srs_server = NULL;
 
-MockEmptyIO::MockEmptyIO()
-{
-}
-
-MockEmptyIO::~MockEmptyIO()
-{
-}
-
-bool MockEmptyIO::is_never_timeout(int64_t /*timeout_us*/)
-{
-    return true;
-}
-
-int MockEmptyIO::read_fully(void* /*buf*/, size_t /*size*/, ssize_t* /*nread*/)
-{
-    return ERROR_SUCCESS;
-}
-
-int MockEmptyIO::write(void* /*buf*/, size_t /*size*/, ssize_t* /*nwrite*/)
-{
-    return ERROR_SUCCESS;
-}
-
-void MockEmptyIO::set_recv_timeout(int64_t /*timeout_us*/)
-{
-}
-
-int64_t MockEmptyIO::get_recv_timeout()
-{
-    return -1;
-}
-
-int64_t MockEmptyIO::get_recv_bytes()
-{
-    return -1;
-}
-
-void MockEmptyIO::set_send_timeout(int64_t /*timeout_us*/)
-{
-}
-
-int64_t MockEmptyIO::get_send_timeout()
-{
-    return 0;
-}
-
-int64_t MockEmptyIO::get_send_bytes()
-{
-    return 0;
-}
-
-int MockEmptyIO::writev(const iovec */*iov*/, int /*iov_size*/, ssize_t* /*nwrite*/)
-{
-    return ERROR_SUCCESS;
-}
-
-int MockEmptyIO::read(void* /*buf*/, size_t /*size*/, ssize_t* /*nread*/)
-{
-    return ERROR_SUCCESS;
-}
-
 // basic test and samples.
 VOID TEST(SampleTest, FastSampleInt64Test) 
 {
diff --git a/trunk/src/utest/srs_utest.hpp b/trunk/src/utest/srs_utest.hpp
index c0fdfaa7d..239cc68c2 100644
--- a/trunk/src/utest/srs_utest.hpp
+++ b/trunk/src/utest/srs_utest.hpp
@@ -49,34 +49,4 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 //    * {ASSERT|EXPECT}_DOUBLE_EQ(expected, actual): Tests that two double values are almost equal.
 //    * {ASSERT|EXPECT}_NEAR(v1, v2, abs_error): Tests that v1 and v2 are within the given distance to each other.
 
-#include <srs_protocol_io.hpp>
-
-class MockEmptyIO : public ISrsProtocolReaderWriter
-{
-public:
-    MockEmptyIO();
-    virtual ~MockEmptyIO();
-// for protocol
-public:
-    virtual bool is_never_timeout(int64_t timeout_us);
-// for handshake.
-public:
-    virtual int read_fully(void* buf, size_t size, ssize_t* nread);
-    virtual int write(void* buf, size_t size, ssize_t* nwrite);
-// for protocol
-public:
-    virtual void set_recv_timeout(int64_t timeout_us);
-    virtual int64_t get_recv_timeout();
-    virtual int64_t get_recv_bytes();
-// for protocol
-public:
-    virtual void set_send_timeout(int64_t timeout_us);
-    virtual int64_t get_send_timeout();
-    virtual int64_t get_send_bytes();
-    virtual int writev(const iovec *iov, int iov_size, ssize_t* nwrite);
-// for protocol/amf0/msg-codec
-public:
-    virtual int read(void* buf, size_t size, ssize_t* nread);
-};
-
 #endif
diff --git a/trunk/src/utest/srs_utest_handshake.cpp b/trunk/src/utest/srs_utest_handshake.cpp
index 77a6af4ce..d412328c3 100644
--- a/trunk/src/utest/srs_utest_handshake.cpp
+++ b/trunk/src/utest/srs_utest_handshake.cpp
@@ -26,6 +26,67 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_core_autofree.hpp>
 #include <srs_protocol_utility.hpp>
 
+MockEmptyIO::MockEmptyIO()
+{
+}
+
+MockEmptyIO::~MockEmptyIO()
+{
+}
+
+bool MockEmptyIO::is_never_timeout(int64_t /*timeout_us*/)
+{
+    return true;
+}
+
+int MockEmptyIO::read_fully(void* /*buf*/, size_t /*size*/, ssize_t* /*nread*/)
+{
+    return ERROR_SUCCESS;
+}
+
+int MockEmptyIO::write(void* /*buf*/, size_t /*size*/, ssize_t* /*nwrite*/)
+{
+    return ERROR_SUCCESS;
+}
+
+void MockEmptyIO::set_recv_timeout(int64_t /*timeout_us*/)
+{
+}
+
+int64_t MockEmptyIO::get_recv_timeout()
+{
+    return -1;
+}
+
+int64_t MockEmptyIO::get_recv_bytes()
+{
+    return -1;
+}
+
+void MockEmptyIO::set_send_timeout(int64_t /*timeout_us*/)
+{
+}
+
+int64_t MockEmptyIO::get_send_timeout()
+{
+    return 0;
+}
+
+int64_t MockEmptyIO::get_send_bytes()
+{
+    return 0;
+}
+
+int MockEmptyIO::writev(const iovec */*iov*/, int /*iov_size*/, ssize_t* /*nwrite*/)
+{
+    return ERROR_SUCCESS;
+}
+
+int MockEmptyIO::read(void* /*buf*/, size_t /*size*/, ssize_t* /*nread*/)
+{
+    return ERROR_SUCCESS;
+}
+
 #ifdef SRS_AUTO_SSL
 
 // verify the sha256
diff --git a/trunk/src/utest/srs_utest_handshake.hpp b/trunk/src/utest/srs_utest_handshake.hpp
index 2d678bf7f..44780fb2e 100644
--- a/trunk/src/utest/srs_utest_handshake.hpp
+++ b/trunk/src/utest/srs_utest_handshake.hpp
@@ -36,4 +36,34 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 using namespace srs;
 #endif
 
+#include <srs_protocol_io.hpp>
+
+class MockEmptyIO : public ISrsProtocolReaderWriter
+{
+public:
+    MockEmptyIO();
+    virtual ~MockEmptyIO();
+// for protocol
+public:
+    virtual bool is_never_timeout(int64_t timeout_us);
+// for handshake.
+public:
+    virtual int read_fully(void* buf, size_t size, ssize_t* nread);
+    virtual int write(void* buf, size_t size, ssize_t* nwrite);
+// for protocol
+public:
+    virtual void set_recv_timeout(int64_t timeout_us);
+    virtual int64_t get_recv_timeout();
+    virtual int64_t get_recv_bytes();
+// for protocol
+public:
+    virtual void set_send_timeout(int64_t timeout_us);
+    virtual int64_t get_send_timeout();
+    virtual int64_t get_send_bytes();
+    virtual int writev(const iovec *iov, int iov_size, ssize_t* nwrite);
+// for protocol/amf0/msg-codec
+public:
+    virtual int read(void* buf, size_t size, ssize_t* nread);
+};
+
 #endif