Add libhv and test http client

vendor/libhv/include/hv/WebSocketChannel.h

@@ -0,0 +1,55 @@
+#ifndef HV_WEBSOCKET_CHANNEL_H_
+#define HV_WEBSOCKET_CHANNEL_H_
+
+#include <mutex>
+
+#include "Channel.h"
+
+#include "wsdef.h"
+#include "hmath.h"
+
+namespace hv {
+
+class HV_EXPORT WebSocketChannel : public SocketChannel {
+public:
+    ws_session_type type;
+    WebSocketChannel(hio_t* io, ws_session_type type = WS_CLIENT)
+        : SocketChannel(io)
+        , type(type)
+        , opcode(WS_OPCODE_CLOSE)
+    {}
+    ~WebSocketChannel() {}
+
+    // isConnected, send, close
+
+    int send(const std::string& msg, enum ws_opcode opcode = WS_OPCODE_TEXT, bool fin = true) {
+        return send(msg.c_str(), msg.size(), opcode, fin);
+    }
+
+    int send(const char* buf, int len, enum ws_opcode opcode = WS_OPCODE_BINARY, bool fin = true);
+
+    // websocket fragment
+    int send(const char* buf, int len, int fragment, enum ws_opcode opcode = WS_OPCODE_BINARY);
+
+    int sendPing();
+    int sendPong();
+
+    int close() {
+        return SocketChannel::close(type == WS_SERVER);
+    }
+
+protected:
+    int sendFrame(const char* buf, int len, enum ws_opcode opcode = WS_OPCODE_BINARY, bool fin = true);
+
+public:
+    enum ws_opcode  opcode;
+private:
+    Buffer      sendbuf_;
+    std::mutex  mutex_;
+};
+
+}
+
+typedef std::shared_ptr<hv::WebSocketChannel> WebSocketChannelPtr;
+
+#endif // HV_WEBSOCKET_CHANNEL_H_