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286 lines
5.7 KiB
C++
286 lines
5.7 KiB
C++
/**
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* Copyright (C) 2015-2018
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* All rights reserved.
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*
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* AUTHOR(S)
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* niukey@qq.com
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* shuxin.zheng@qq.com
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*
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* VERSION
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* Sun 18 Sep 2016 05:15:52 PM CST
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*/
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#pragma once
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#include "../acl_cpp_define.hpp"
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#include "../stdlib/noncopyable.hpp"
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namespace acl
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{
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class socket_stream;
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enum
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{
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FRAME_CONTINUATION = 0x00,
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FRAME_TEXT = 0x01,
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FRAME_BINARY = 0x02,
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FRAME_RSV3 = 0x03,
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FRAME_RSV4 = 0x04,
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FRAME_RSV5 = 0x05,
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FRAME_RSV6 = 0x06,
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FRAME_RSV7 = 0x07,
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FRAME_CLOSE = 0x08,
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FRAME_PING = 0x09,
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FRAME_PONG = 0x0A,
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FRAME_CTL_RSVB = 0x0B,
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FRAME_CTL_RSVC = 0x0C,
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FRAME_CTL_RSVD = 0x0D,
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FRAME_CTL_RSVE = 0x0E,
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FRAME_CTL_RSVF = 0x0F,
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};
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struct frame_header
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{
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bool fin;
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bool rsv1;
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bool rsv2;
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bool rsv3;
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unsigned char opcode:4;
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bool mask;
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unsigned long long payload_len;
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unsigned int masking_key;
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};
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/**
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* websocket 基础类
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*/
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class ACL_CPP_API websocket : public noncopyable
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{
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public:
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/**
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* 构造方法
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* @param client {socket_stream&}
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*/
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websocket(socket_stream& client);
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~websocket(void);
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/**
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* 当类对象被重复使用时,需要通过本方法将状态重重
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*/
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websocket& reset(void);
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/**
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* 获得本类对象所绑定的 socket_stream 对象
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* @return {socket_stream&}
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*/
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socket_stream& get_stream(void) const
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{
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return client_;
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}
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/**
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* 设置是否结束的标志位
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* @param yes {bool}
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* @return {websocket&}
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*/
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websocket& set_frame_fin(bool yes);
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/**
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* 设置保留标志位
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* @param yes {bool}
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* @return {websocket&}
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*/
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websocket& set_frame_rsv1(bool yes);
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/**
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* 设置保留标志位
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* @param yes {bool}
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* @return {websocket&}
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*/
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websocket& set_frame_rsv2(bool yes);
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/**
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* 设置保留标志位
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* @param yes {bool}
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* @return {websocket&}
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*/
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websocket& set_frame_rsv3(bool yes);
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/**
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* 设置数据帧类型,参见上面定义:FRAME_XXX
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* @param type {unsigned char}
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* @return {websocket&}
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*/
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websocket& set_frame_opcode(unsigned char type);
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/**
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* 设置本数据帧数据载体的总长度
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* @param len {unsigned long long}
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* @return {websocket&}
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*/
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websocket& set_frame_payload_len(unsigned long long len);
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/**
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* 设置数据帧数据的掩码值
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* @param mask {unsigned int}
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* @return {websocket&}
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*/
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websocket& set_frame_masking_key(unsigned int mask);
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/**
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* 发送数制帧中的数据体,可以循环调用本方法发送本帧的数据,发送数据
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* 总长度(即多次调用本方法的数据长度之和)应与 set_frame_payload_len
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* 方法设置的值相同
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* @param data {const void*}
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* @param len {size_t}
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* @return {bool} 发送是否成功
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*/
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bool send_frame_data(const void* data, size_t len);
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bool send_frame_data(void* data, size_t len);
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bool send_frame_data(const char* str);
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bool send_frame_data(char* str);
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/**
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* 发送 PONG 数据帧
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* @param data {const void*} PONG 数据帧的数据载体,可以为 NULL
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* @param len {size_t} data 数据长度,当 data 为 NULL 或 len 为 0 时,
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* 表示没有数据载荷
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* @return {bool} 发送是否成功
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*/
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bool send_frame_pong(const void* data, size_t len);
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bool send_frame_pong(void* data, size_t len);
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bool send_frame_pong(const char* str);
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bool send_frame_pong(char* str);
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/**
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* 发送 PING 数据帧
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* @param data {const void*} PING 数据帧的数据载体,可以为 NULL
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* @param len {size_t} data 数据长度,当 data 为 NULL 或 len 为 0 时,
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* 表示没有数据载荷
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* @return {bool} 发送是否成功
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*/
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bool send_frame_ping(const void* data, size_t len);
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bool send_frame_ping(void* data, size_t len);
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bool send_frame_ping(const char* str);
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bool send_frame_ping(char* str);
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/**
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* 读取数据帧帧头
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* @return {bool}
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*/
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bool read_frame_head(void);
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/**
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* 读取数据帧数据体,需要循环调用本方法直至正常结束或出错
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* @param buf {void*} 存放数据的缓冲区
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* @param size {size_t} buf 数据缓冲区大小
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* @return {int} 返回值 > 0 表示读到的数据长度需再次读,== 0 表示读结束,
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* < 0 表示读出错
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*/
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int read_frame_data(void* buf, size_t size);
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/**
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* 获得读到的数据帧的帧头
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* @return {const frame_header&}
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*/
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const frame_header& get_frame_header(void) const
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{
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return header_;
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}
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/**
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* 判断本帧是否为结束帧
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* @return {bool}
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*/
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bool frame_is_fin(void) const
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{
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return header_.fin;
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}
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/**
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* 判断本帧是否设置了保留标志位
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* @return {bool}
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*/
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bool frame_is_rsv1(void) const
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{
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return header_.rsv1;
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}
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/**
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* 判断本帧是否设置了保留标志位
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* @return {bool}
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*/
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bool frame_is_rsv2(void) const
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{
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return header_.rsv2;
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}
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/**
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* 判断本帧是否设置了保留标志位
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* @return {bool}
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*/
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bool frame_is_rsv3(void) const
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{
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return header_.rsv3;
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}
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/**
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* 获得本数据帧的状态码,参见上面:FRAME_XXX
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* @return {unsigned char}
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*/
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unsigned char get_frame_opcode(void) const
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{
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return header_.opcode;
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}
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/**
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* 获得本数据帧是否设置了掩码
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* @return {bool}
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*/
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bool frame_has_mask(void) const
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{
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return header_.mask;
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}
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/**
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* 获得本数据帧的数据体长度
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* @return {unsigned long long}
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*/
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unsigned long long get_frame_payload_len(void) const
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{
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return header_.payload_len;
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}
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/**
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* 获得本数据帧的掩码值
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* @return {unsigned int}
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*/
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unsigned int get_frame_masking_key(void) const
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{
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return header_.masking_key;
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}
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/**
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* 获得本数据帧已读到的数据长度
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* @return {unsigned long long}
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*/
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unsigned long long get_frame_payload_nread(void) const
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{
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return payload_nread_;
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}
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private:
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socket_stream& client_;
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struct frame_header header_;
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char* header_buf_;
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size_t header_size_;
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size_t header_len_;
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unsigned long long payload_nread_;
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unsigned long long payload_nsent_;
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bool header_sent_;
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void make_frame_header(void);
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};
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} // namespace acl
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