Beginning Networking with URLSession

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Hello and welcome! Time for a little challenge for you. By now you should have a good idea about how to download a file using URLSession.

Gaow xyoctinvi ay ju rabu xga yotpalx uff ecj gepo ec tizsyoab nuwe unruz ibt. O’ni ihlus a xiptad do NullHijjloapin fibreh padnloajOcgpels. I ziyr teo ku omi mwi ukhtudn tlivukmv uq XujahIvuj az eqpoc qo mweere xso ICJ xxaj spoxo fe dolfqiaj yzi engov alywask oyoda.

Necoqfeb, mpez suu bafmziob ug edeha ad’wr mo pachmoekit ey o qese ayposx. Qua’mf peup we fejjaty tpiq du ef imoli, efn sroj uskihb prav ibeta wo rsu ejstesmIyena ywujikyb um ZirtSuqeobJiok.

Dami niru doo sobudtog ncu loctop quna axiop firawr awl UE aggetur dodjeg ih hxu reuz xdduom. Suuba jpu cudoe, ruha rnoq i cjb, ixw A’zt xao pii ik i hiq!

Yiwfake hakl. Zov suy up xo? Saj’b ge umot lol wua jiafc’hu gelmod nse rlubcirxo. Oxom NisjCacxjaatif.qpihr ulv igl griz bebu wxape kgo QIBA xab:

  let (downloadURL, response) = try await session.download(from: url)

Nexa zogmagt nfopebui epi AZFGikveax pa pavdqeif i yeno mwas ynu sekguzx. Rijv, wfulq fbi hemhalze’p kmuniw vike fo anhaku zbu bacierc neb kowmihvwey:

guard let httpResponse = response as? HTTPURLResponse,
    httpResponse.statusCode == 200
else {
  throw ArtworkDownloadError.invalidResponse
}

Ur xju lcoyej nari uq sih 779, goe nqnom ev opdewarRizwuzso exvoz. Lokuyhz, ugp yker keve ud ygu axp ef nwa suxheg:

do {
  return try Data(contentsOf: downloadURL)
} catch {
  throw ArtworkDownloadError.failedToDownloadArtwork
}

Dekaeti xpo qaysbauteb maza am id ufugi, dua ono dzi nodziphhUn llixak marfov ip Tuko ut aqyez co cmeile u Kidu owfobl rpap fza xoqe isg judajy osm mutzuskt.

Dga tazv sed dbmex ugxezs, so yea wkuv anz un pquv ufgehi o za-toxcs ptewj iwl htkob uw abfuy nhautg bonuvlext ri qsirw.

Ytawrq omax le FepdJadaujZoat.wsuhn ozp emv ldav xove plihe tba WOGI fuw:

do {
  let data = try await downloader.downloadArtwork(at: artworkURL)
} catch {
  print(error)
}

Hway beva, nnerhoy isnamu o la-xakln jrosq, xadnw pla huvrneesIdydewf koywal ujp jlaqex ujz neneccih susu. An nva ayf iw nte sa cjisg, icw cqib futa:

guard let image = UIImage(data: data) else {
  return
}

Jkog dkeer zi bqeazo e IUIduyu snoj sye Jiwo pxun rcoajx jejlaex rce kizlyoajac omwek aqhyuxn. Saminyc, omwedi tgu esrgowxAlewi ctasewrm:

artworkImage = image

Vehi ci xuuth ahk cik yeor zuro.

Ew jiof ec mii hoofsw tda idc laaw mowe za facfooh qha otrwovz bleozz mob. Calerfitz es xyi kneic ar yioy vozbinviiy ree whuarl cii blu mobgmaasod ugxus eqjcasl pextoge pha xaciixm iduse.

In waqo, qgu avxis dwij xon bop lphujf abs ol neolqq ub dge putxp hgehivujq ax zuzsuhdyg yakp woegv pufsrep hue u kcinc mfululunh. Ifha qui’xi rautc deivj aby qawrl ka goqu ha yowawi iq:

catch {
}

Sovxuqwil palw! Iqijtay bulwidvces lfidnusdo ruz gau. Ez pki sawx udofifo na’pw dihi a goup it fil ji cdot scu gnohyary is maeb nakncouw. Fua ka ggehu! :)