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Merge pull request 'Fix possible corruption of download files on retry, assorted other HTTP fixes' (#66) from kermit/deemix:fix-corruption-hang into main 

Reviewed-on: https://codeberg.org/RemixDev/deemix/pulls/66
This commit is contained in:
RemixDev 2020-09-30 10:19:37 +02:00
parent 48f6026c75 1969d3ca7e
commit 72e3316d57
2 changed files with 47 additions and 34 deletions
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4
deemix/api/deezer.py
View File

@ -81,7 +81,9 @@ class Deezer:
def get_track_filesizes(self, sng_id):
try:
response = requests.post("https://www.deezer.com/", headers=self.http_headers)
response = requests.post("https://www.deezer.com/",
headers=self.http_headers,
timeout=30)
guest_sid = response.cookies.get('sid')
site = requests.post(
"https://api.deezer.com/1.0/gateway.php",

77
deemix/app/downloadjob.py
View File

@ -616,7 +616,7 @@ class DownloadJob:
if int(track.filesizes[f"FILESIZE_{format}"]) != 0:
return format_num
elif not track.filesizes[f"FILESIZE_{format}_TESTED"]:
request = get(self.dz.get_track_stream_url(track.id, track.MD5, track.mediaVersion, format_num), stream=True)
request = requests.head(self.dz.get_track_stream_url(track.id, track.MD5, track.mediaVersion, format_num), headers={'User-Agent': USER_AGENT_HEADER}, timeout=30)
try:
request.raise_for_status()
return format_num
@ -642,43 +642,54 @@ class DownloadJob:
return error_num # fallback is enabled and loop went through all formats
def streamTrack(self, stream, track, range=None):
def streamTrack(self, stream, track, start=0):
if self.queueItem.cancel: raise DownloadCancelled
try:
headers=self.dz.http_headers
if range is not None:
headers['Range'] = range
request = self.dz.session.get(track.downloadUrl, headers=self.dz.http_headers, stream=True, timeout=10)
except request_exception.ConnectionError:
eventlet.sleep(2)
return self.streamTrack(stream, track)
request.raise_for_status()
blowfish_key = str.encode(self.dz._get_blowfish_key(str(track.id)))
complete = int(request.headers["Content-Length"])
if complete == 0:
raise DownloadEmpty
chunkLength = 0
headers=dict(self.dz.http_headers)
if range != 0:
headers['Range'] = f'bytes={start}-'
chunkLength = start
percentage = 0
try:
for chunk in request.iter_content(2048 * 3):
eventlet.sleep(0)
if self.queueItem.cancel: raise DownloadCancelled
if len(chunk) >= 2048:
chunk = Blowfish.new(blowfish_key, Blowfish.MODE_CBC, b"\x00\x01\x02\x03\x04\x05\x06\x07").decrypt(chunk[0:2048]) + chunk[2048:]
stream.write(chunk)
chunkLength += len(chunk)
if isinstance(self.queueItem, QISingle):
percentage = (chunkLength / complete) * 100
self.downloadPercentage = percentage
with self.dz.session.get(track.downloadUrl, headers=headers, stream=True, timeout=10) as request:
request.raise_for_status()
blowfish_key = str.encode(self.dz._get_blowfish_key(str(track.id)))
complete = int(request.headers["Content-Length"])
if complete == 0:
raise DownloadEmpty
if start != 0:
responseRange = request.headers["Content-Range"]
logger.info(f'{track.title} downloading range {responseRange}')
else:
chunkProgres = (len(chunk) / complete) / self.queueItem.size * 100
self.downloadPercentage += chunkProgres
self.updatePercentage()
except SSLError:
range = f'bytes={chunkLength}-'
logger.info(f'retrying {track.title} with range {range}')
return self.streamTrack(stream, track, range)
logger.info(f'{track.title} downloading {complete} bytes')
for chunk in request.iter_content(2048 * 3):
if self.queueItem.cancel: raise DownloadCancelled
if len(chunk) >= 2048:
chunk = Blowfish.new(blowfish_key, Blowfish.MODE_CBC, b"\x00\x01\x02\x03\x04\x05\x06\x07").decrypt(chunk[0:2048]) + chunk[2048:]
stream.write(chunk)
chunkLength += len(chunk)
if isinstance(self.queueItem, QISingle):
percentage = (chunkLength / (complete + start)) * 100
self.downloadPercentage = percentage
else:
chunkProgres = (len(chunk) / (complete + start)) / self.queueItem.size * 100
self.downloadPercentage += chunkProgres
self.updatePercentage()
except SSLError as e:
logger.info(f'retrying {track.title} from byte {chunkLength}')
return self.streamTrack(stream, track, chunkLength)
except (request_exception.ConnectionError, requests.exceptions.ReadTimeout):
eventlet.sleep(2)
return self.streamTrack(stream, track, start)
def updatePercentage(self):
if round(self.downloadPercentage) != self.lastPercentage and round(self.downloadPercentage) % 2 == 0: