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Mac Forum / Programming / Mac Programming / April 2006A problem with FTP programing with CFWriteStream.
Hi, everyone: I use CFReadStreamCreateWithFTPURL function to create a CFWriteStream,so that i can upload file to ftp server. But,the is a problem,when i call CFWriteStreamWrite function to update bytes to ftp server.because it will not block, so when i call call CFWriteStreamClose to close the Stream after call CFWriteStreamWrite. I found that some bytes haven't tranfer to ftp server yet,so i got a error on ftp server with the file, it is smaller than the file upload by me. Could anybody know how to deal with this problem? by the way i'm not using callback method wich recomand by apple, because it doesn't fit with my class. thx. all about what i say is means is there any way, which i can test a CFWriteStream is finish transfer data to remote ftp server, so that i can release it safely. but it not using event > Hi, everyone: > [quoted text clipped - 10 lines] > using callback method wich recomand by apple, because it doesn't fit > with my class. So, make it fit. You're using a nonblocking asynchronous API, you'd better get used to the idea and figure out how to work with it. If you *really* need it to be exposed as a blocking write, you should probably wrap it in your own functions, probably by using a separate thread to actually run the runloop that contains the write stream.  SignatureMichael Ash Rogue Amoeba Software Michael Ash : thank u very much. may i know is there any function can polling for is CFWriteStreamWrite function write to socket finished and successed? i have try to read all the .h file of CoreFounadation and CoreService => CFNetwork but , no function seems to do such thing! so must i listen to [kCFStreamEventEndEncountered] event. i think, perhaps i should begin to write this case by socket but not CF! > Michael Ash : > thank u very much. may i know is there any function can polling for > is CFWriteStreamWrite function write to socket finished and successed? > i have try to read all the .h file of CoreFounadation and CoreService > => CFNetwork but , no function seems to do such thing! so must i listen > to [kCFStreamEventEndEncountered] event. You are merely restating your original question, which I already answered. Perhaps you did not understand the answer, in which case I suggest you go back and read my post again. SignatureMichael Ash Rogue Amoeba Software Michael Ash: I write a callback function as friend of my class to resolve the problem,but i found the problem still exist. So i download the FTP sample from apple site again. i found the sample have got the same problem. when i set the upload speed to 10k, then sample cann't finnished upload the full file. but set upload speed with no limit, it can upload all size of the file.perhaps really there is some bug in FTP api provide by apple. now, i have to find some other way to deal with my project. it is really a terrible thing. |
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