ios - AFHTTPSessionManager GET freezing/getting deadlocked? -


i ran problem 1 of our clients have slow internet connection , use groundcontrol. anytime try load app, stuck on "attemping connect server" loading screen. know in code must getting stuck here (see code below), because neither success or failure ever called (if app @ least advance). 

nsurl *ourtable = [nsurl urlwithstring:[[nsstring stringwithformat: @"%@://%@%@/bla/%@/bla/bla/reachability", (usesslb == yes) ? @"https" : @"http", server, port, self.globalsettings.env]   stringbyaddingpercentescapesusingencoding:nsutf8stringencoding]];  afhttpsessionmanager *manager = [afhttpsessionmanager manager]; manager.responseserializer    = [afjsonresponseserializer serializer];  [manager get:ourtable.absolutestring parameters:nil progress:nil success:^(nsurlsessiondatatask * _nonnull task, id  _nullable responseobject) {      nslog(@"online..");     [self.oursyncclass functionthatgetscalledwhensuccess;      [nstimer scheduledtimerwithtimeinterval:1.0 target:self selector:@selector(syncother) userinfo:nil repeats:no];     startsync = yes; //bool value used other stuffs      nslog(@"syncing data");     [manager invalidatesessioncancelingtasks:yes];  } failure:^(nsurlsessiondatatask * _nullable task, nserror * _nonnull error) {     nslog(@"failed connect server. %@", error);     self.offline = yes; //bool used other stuff     [uiview beginanimations:nil context:nil];     [uiview setanimationduration:1.0];     [self.homeviewcontrollerinstance.syncview setalpha:0.0];     [uiview commitanimations];      [self.oursyncclass createdb];     [self.oursyncclass opendb];      [self startcustomfunction;     [manager invalidatesessioncancelingtasks:yes];  }];

why our code stuck (locked?) in completion block? due slow internet connection? possibly have groundcontrol? how can handle type of situation?

well ended finding out problem. turns out had logical bug in our code object oursyncclass wasn't initialized every time before snippet of code executed. reason deadlocking completion block. so, included check if(self.oursyncclass != nil) {

} around code , seems working properly. i'll post update after response our client well.


Comments

Post a Comment

Popular posts from this blog

Command prompt result in label. Python 2.7 -

i want put result(output) of shell command label. command works, label shows "0", however, in command prompt, result shown correctly, need showed in label. doing ubuntu. myg1 = button(root, text="rodyti informacija", command=lambda: gauti()) myg1.pack(side=bottom) def gauti(): imti = tekstas.get("1.0", "end-1c") info = subprocess.call("id '{imti}' ".format(imti=imti), shell=true) w = label(root, text= info) w.pack(side = bottom) subprocess.call() returns exit code of process created (in case 0 success). if want text output of process, should instead call subprocess.check_output() .
Read more

javascript - How do I use URL parameters to change link href on page? -

i change href value of link using url parameters. example: default <a id="dlink" href="link-1">link</a> but, when user goes https://url.com/?dlink=link-2 it swaps out link new link <a id="dlink" href="link-2">link</a> first need value url. if you're not using javascript framework can create function using jquery. please check get url parameter jquery or how query string values in js it. after that, element "a" id , set value there. $("#dlink").attr("href", hreffromparam);
Read more

amazon web services - AWS Route53 Trying To Get Site To Resolve To www -

so have domain nameservers pointed aws route 53. site hosted on ec2 instance , reachable resolves site.com, if input www.site.com. i'm curious how site resolve www.site.com. have under route53 domains hosted zone 2 additional record sets outside of ns , soa: a site.com ec2 elastic ip cname www.site.com ec2 public dns i can reach site using both site.com , www.site.com, resolve site.com. there way make if enter either, resolves www.site.com? at first, both should record set. a site.com ec2 elastic ip www.site.com ec2 elastic ip and need redirect setting in web server (nginx, apache, ..) following. (source: how redirect www non-www nginx on centos 7 ) redirect non-www www if want redirect users plain, non-www domain www domain, add server block: server { server_name example.com; return 301 $scheme://www.example.com$request_uri; } save , exit. configures nginx redirect requests "example.com" "www.example.com". not
Read more