SPICE建立Channel的详细步骤及消息传递流程

http://blog.chinaunix.net/uid-24709751-id-4035504.html

参考 http://www.cnblogs.com/D-Tec/archive/2013/04/19/3030129.html
建立Channel的详细步骤及消息传递流程如下：（s表示server代码，c表示client代码）

1. s: reds_init_net, 注册回调reds_accept 创建listen socket，增加监听watch_add(reds_accept),后续加入select监听
   
2. 
   
3. c: RedChannel::run-》RedChannelBase::connect()-》RedPeer::connect_unsecure发送连接请求，等待服务端accept
   
4. 
   
5. s: reds_accept
6.     -》spice_server_add_client，reds_handle_new_link
7.         -》async_read_handler，异步接收数据，需要客户端发送数据，填充link->link_header结束
8. c: RedChannelBase::link() -》link_mess.channel_type = _type，send 发送link请求，recive等待
9. s:            -》reds_handle_read_header_done，
10.                 -》async_read_handler，填充link->link_mess
11.                     -》reds_handle_read_link_done
12.                         —》async_read_handler，填充link->auth_mechanism
    
13.                             ->reds_handle_auth_mechanism
14.                                 ->reds_get_spice_ticket
15.                                    —》async_read_handler，填充link->tiTicketing.encrypted_ticket.encrypted_data
    
16.                                        —》 reds_handle_ticket
    
17.                                            ->reds_handle_link
    
18.                                              ->if (link->link_mess->channel_type == SPICE_CHANNEL_MAIN) { reds_handle_main_link(link); }
    
    
19.    async_read_handler-》reds_stream_read堵塞，等待客户端发送消息
    
20.  

reds_handle_main_link流程
    -》reds_send_link_result(link, SPICE_LINK_ERR_OK);

1. c->s: SPICE_CHANNEL_MAIN s: reds_handle_main_link，此过程的详细步骤如上
   
2. 
   
3. s->c: SPICE_MSG_MAIN_INIT, c: handle_init
   
4. 
   
5. c->s: SPICE_MSGC_MAIN_ATTACH_CHANNELS s: reds_send_channels
   
6. 
   
7. s->c: SPICE_MSG_MAIN_CHANNELS_LIST c: handle_channels