ios - GCDAsyncSocket Client not reading until write -


it's not code include, why might gcdasyncsocket client stall on reads until writedata queued? symptoms:

  • "didconnecttohost" doesn't called though server calls "didacceptnewsocket'.
  • "didreaddata" doesn't called when server writes data
  • "socketdiddisconnect" not called
  • writes client transmitted properly

incredibly oddly, calling "writedelayed" method (which merely enqueues "writedata" method) enables reads processed properly. removing "writedata" method disables reads.

this made me think configured gcd dispatch queue wrong tried every new , default serial , concurrent queue possible

or socket object being released before time, made class property, no avail.

one thing may complicating things (though don't know how), connection being made in response resolved nsnetservice (bonjour) object, might on different dispatch queue. tried wrapping "setupconnection" in block executed on main queue, no avail.

here's small amount of code, i'll edit if there questions.

thank you, james 

-(void)setupconnection {      self.queue = dispatch_queue_create(null, dispatch_queue_serial);       self.socket = [[gcdasyncsocket alloc] initwithdelegate:self delegatequeue:self.queue]; }  -(void)connect {      nserror *error = nil;      if(![self.socket connecttohost:self.socketinfo.address onport:self.socketinfo.port error:&error])      {           nslog(@"i goofed: %@", error);      }      nslog(@"connecting to: %@:%i",self.socketinfo.address,self.socketinfo.port); }  -(void)socket:(gcdasyncsocket *)sock didconnecttohost:(nsstring *)host port:(uint16_t)port {     nslog(@"connected");     [self.socket readdatatodata:[gcdasyncsocket crlfdata] withtimeout:-1 tag:0]; }  -(void)writedelayed {     double delayinseconds = 2000000.0;     dispatch_time_t poptime = dispatch_time(dispatch_time_now, (int64_t)(delayinseconds * nsec_per_sec));     dispatch_after(poptime, dispatch_get_main_queue(), ^(void){         nsdata* dataobj = [gcdasyncsocket crlfdata];         [self.socket writedata:dataobj withtimeout:-1 tag:1];     }); } ...

the answer 1 of higher objects in object chain released early, causing socket released well. word wise seems.


Comments

Post a Comment

Popular posts from this blog

ios - iPhone/iPad different view orientations in different views , and apple approval process -

i force app's home screen portrait , other views landscape. apple rejects app if this? if not , how force first screen launch in portrait mode? , force other screens launch in landscape. this not duplicate question search every possible answer in website. i force app's home screen portrait , other views landscape. apple rejects app if this? no apple not reject app this. have lot of apps doesn't support orientation. forcing on 1 screen won't cause app reject. if not , how force first screen launch in portrait mode? , force other screens launch in landscape. can on write : -(nsuinteger)supportedinterfaceorientations; function.
Read more

java Extracting Zip file -

i'm looking way extract zip file. far have tried java.util.zip , org.apache.commons.compress, both gave corrupted output. basically, input zip file contain 1 single .doc file. java.util.zip: output corrupted. org.apache.commons.compress: output blank file, 2 mb size. so far commercial software winrar work perfectly. there java library make use of this? this method using java.util library: public void extractzipnative(file filezip) { zipinputstream zis; stringbuilder sb; try { zis = new zipinputstream(new fileinputstream(filezip)); zipentry ze = zis.getnextentry(); byte[] buffer = new byte[(int) ze.getsize()]; fileoutputstream fos = new fileoutputstream(this.tempfolderpath+ze.getname()); int len; while ((len=zis.read(buffer))>0) { fos.write(buffer); } fos.flush(); fos.close(); } catch (filenotfoundexception e) { // todo auto-generated catch block ...
Read more

C# WinForm - loading screen -

i ask how make loading screen (just picture or something) appears while program being loaded, , disappears when program has finished loading. in fancier versions, have seen process bar (%) displayed. how can have that, , how calculate % show on it? i know there form_load() event, not see form_loaded() event, or % property / attribute anywhere. all need create 1 form splash screen , show before main start showing landing page , close splash once landing page loaded. class splashform { //delegate cross thread call close private delegate void closedelegate(); //the type of form displayed splash screen. private static splashform splashform; static public void showsplashscreen() { // make sure launched once. if (splashform != null) return; thread thread = new thread(new threadstart(splashform.showform)); thread.isbackground = true; thread.setapartmentstate(apartmentstate.sta); thread....
Read more