objective c - NSData Splits into chunks -

i'm nslogging stream of nsdata receive outside source, reason, keeps breaking 40 character chunks, , going new line once hits 40 characters. i'm trying parse through stream , pick out values in specific places, it's huge hassle keeps jumping down line. know how behavior can prevented? here example of nslog:

2013-07-17 14:44:32.638 test app [4041:907] data equals  <3e2c042c 31333037 31373032 34302d30 372c0100> 2013-07-17 14:44:32.698 test app [4041:907] data equals  <00000000 2c020000 0000002c 03000000 00002cff> 2013-07-17 14:44:32.758 test app [4041:907] data equals  <00000000 00> 

edit: relevant code, i'm using third party ble library, figured wouldn't of use. line of relevant code:

nsdata *data = [bledevice readreceivedbytes]; nslog(@"data equals %@", data); 

i gave rob's suggestion shot, , result:

2013-07-17 15:21:35.399 test app[4060:907] data equals  <3e2c012c 31333037 31373033 32312d30 372cff00> 2013-07-17 15:21:35.401 test app[4060:907] data length equals =20 2013-07-17 15:21:35.458 test app[4060:907] data equals  <00000000> 2013-07-17 15:21:35.460 test app[4060:907] data length equals =4 

it should streaming in 1 line, rather having 40 character max. maybe ble thing.

if ble sends small packets there nothing can it. , should not expect packets of size returned.

you should collect received chunks in nsmutabledata object instead:

// init once: nsmutabledata *collecteddata = [nsmutabledata data];  // append received data in read loop: nsdata *data = [bledevice readreceivedbytes]; [collecteddata appenddata:data]; 

now can search specific bytes in collecteddata.