Song Johnny wrote: > to be more, I wonder service layer will keep connecting the rild > socket so that the rild daemon listen thread will accept and build the > connection, but did that way work inefficiently? > > On Tue, May 19, 2009 at 2:15 PM, Song Johnny <ayi.s...@gmail.com > <mailto:ayi.s...@gmail.com>> > wrote: > > Hi, > > Now I am looking RILD system in Android. I have got some idea > about the processing in RILD. when dailing, phone service will > process dail request and then get the rild socket to connect with > rild daemon. After connection, service layer will transfer the > data package to rild daemon, and rild daemon will process the > information included in the data package then rild daemon opens > ttyS device to comunicate with modem. > > To me, after response, rild daemon will send the data from modem > to service layer through the same rild socket. and that's the big > picture of the whole procesure about RILD to process dail request. > > BUT, after that, rild daemon will close the rild socket, which > means there is no permanent connection between phone service and > rild daemon. So, I cannot figure out the case when incoming call, > how RILD would process the information and send it to phone > service! because I have not found the socket connection request in > RILD source. > Have you take a look at libril/ril.cpp. That file contains the message communition between the rild and upper layer. Michael
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