Add libhv and test http client

vendor/libhv/include/hv/WebSocketParser.h

@@ -0,0 +1,35 @@
+#ifndef HV_WEBSOCKET_PARSER_H_
+#define HV_WEBSOCKET_PARSER_H_
+
+#include "hexport.h"
+
+#include <string>
+#include <memory>
+#include <functional>
+
+enum websocket_parser_state {
+    WS_FRAME_BEGIN,
+    WS_FRAME_HEADER,
+    WS_FRAME_BODY,
+    WS_FRAME_END,
+    WS_FRAME_FIN,
+};
+
+struct websocket_parser;
+class HV_EXPORT WebSocketParser {
+public:
+    websocket_parser*                   parser;
+    websocket_parser_state              state;
+    int                                 opcode;
+    std::string                         message;
+    std::function<void(int opcode, const std::string& msg)> onMessage;
+
+    WebSocketParser();
+    ~WebSocketParser();
+
+    int FeedRecvData(const char* data, size_t len);
+};
+
+typedef std::shared_ptr<WebSocketParser> WebSocketParserPtr;
+
+#endif // HV_WEBSOCKET_PARSER_H_