json - AFNetworking get responseObject in failure block -

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i get json data server, json data has line break "\n", got error:

error domain=nscocoaerrordomain code=3840 "the operation couldn’t completed. (cocoa error 3840.)" (unescaped control character around character 2333.) userinfo=0x7fa054a02ab0 {nsdebugdescription=unescaped control character around character 2333.}

so want find where's broken json data, escape first , parse it. can't find response data is.

any help?

edited:

            if let d = error.userinfo  {                     println(d)          println(d[afnetworkingoperationfailingurlresponsedataerrorkey])                 }

i tried in failure block, d[afnetworkingoperationfailingurlresponsedataerrorkey] prints nil

you can response data nserror of failure block:

nsdata *errordata = [error.userinfo objectforkey:afnetworkingoperationfailingurlresponsedataerrorkey];

from that, may transform nsstring or else need escape , process appropriately.


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