BIND 10 #216: Xfrin: Implement the feature items in TODO file.

[BIND 10 Development]

#216: Xfrin: Implement the feature items in TODO file.
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      Reporter:  zhanglikun   |        Owner:  jinmei              
          Type:  enhancement  |       Status:  reviewing           
      Priority:  major        |    Milestone:  y2 6 month milestone
     Component:  xfrin        |   Resolution:                      
      Keywords:               |    Sensitive:  0                   
Estimatedhours:  0.0          |        Hours:  0                   
      Billable:  1            |   Totalhours:  5.0                 
      Internal:  0            |  
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Comment(by shentingting):

 Replying to [comment:34 jinmei]:
 > Replying to [comment:33 shentingting]:
 >
 > > ponit3: I changed select function, now it can select the socket which
 is writable or readable.
 > >
 > Quick check: why do we need to check writability?
 > (intentionally leaving the owner being me)
 because select is asyncronous, so I set the socket non-blocking. The
 connect function is non-blocking, it will return immediately when we call
 it, this will generate EINPROCESS exception, we will ignore this and use
 select to tell us whether it is really readable or writable.

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Ticket URL: <https://bind10.isc.org/ticket/216#comment:35>
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