/* Length is a byte count of Modbus PDU (function code + data) and the * unit identifier. */ usLength = aucTCPBuf[MB_TCP_LEN] << 8U; usLength |= aucTCPBuf[MB_TCP_LEN + 1]; /* Is the frame already complete. */ if
注意:SYN或FIN也占用seq号,该值+1 */staticu8_tflags;/* TCP首部各个标志字段 */staticu8_trecv_flags;/* 记录tcp_process()对报文段的处理结果 */staticstructpbuf*recv_data;/* 单次提交到应用层的数据缓冲区。本次input_receive()处理后,把需要递交到应用层的数据,缓存到这里。 *//* 当前进行输入处...
先使用 tcpdump 抓个包，再使用 Wireshark 看下 TCP 的握手。
(skb->data + offset, copy, csum); if ((len -= copy) == 0) return csum; offset += copy; /* 接下来从这里继续处理 */ pos = copy; /* 已处理数据长 */ } /* 累加本skb分页数据的校验和 */ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { int end; BUG_TRAP(start ...
// 发送数据size_t TCPConnection::write(conststring&data){// 向写入缓冲区写入datasize_t write_size=_sender.stream_in().write(data);// 根据对端接收缓冲区大小控制数据发送量大小_sender.fill_window();// 将等待发送的数据包加上本地的 ackno 和 window size_trans_segments_to_out_with_ack_and...
If it is the beginning of base64://, then the latter data is considered to be base64 encoded and will be used after decoding. 6.15 Independent Service The sps function does not force a upstream to be specified. When the upstream is empty, the sps itself can complete the full proxy func...
Socket套接口是通过将struct socket结构体在创建Socket描述符fd时加入file->private_data,这样通过Socket描述符fd能够找到对应的struct socket结构体变量。struct socket结构体中的struct proto_ops *ops指向Socket套接口函数对应的TCP/IP接口函数,即inet_stream_ops、inet_dgram_ops、inet_sockraw_ops中的函数指针,最终...
KCPprotocol is supported: HTTP (S), SOCKS5 proxy supports the KCP protocol which can transmit data, reduce latency, and improve the browsing experience. The integrated external API, HTTP (S): SOCKS5 proxy authentication can be integrated with the external HTTP API, which can easily control the...
DNS also serves as a database for mail administration. For a complete description of this service, see System Administration Guide: Naming and Directory Services (DNS, NIS, and LDAP). See also the resolver(3RESOLV) man page. /etc files –The original host-based UNIX name system was ...