Unexpected character '#' (code 35) in prolog; expected '<'

[Neal Kranes]

I am having issues using the Blazemeter jmeter plugin on my hls url. 

The error:

2021-02-12 10:40:51,333 WARN c.b.j.v.c.VideoStreamingSampler: Problem downloading playlist

com.blazemeter.jmeter.videostreaming.core.exception.PlaylistParsingException: Error parsing contents from https://stream.frame.io/manifest/hls/master?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdW[truncated url]

at com.blazemeter.jmeter.videostreaming.dash.Manifest.fromUriAndBody(Manifest.java:56) ~[jmeter-bzm-hls-3.0.3.jar:?]

at com.blazemeter.jmeter.videostreaming.core.VideoStreamingSampler.downloadPlaylist(VideoStreamingSampler.java:120) ~[jmeter-bzm-hls-3.0.3.jar:?]

at com.blazemeter.jmeter.videostreaming.dash.DashSampler.sample(DashSampler.java:34) ~[jmeter-bzm-hls-3.0.3.jar:?]

at com.blazemeter.jmeter.videostreaming.core.VideoStreamingSampler.sample(VideoStreamingSampler.java:79) [jmeter-bzm-hls-3.0.3.jar:?]

at com.blazemeter.jmeter.hls.logic.HlsSampler.sample(HlsSampler.java:198) [jmeter-bzm-hls-3.0.3.jar:?]

at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1270) [ApacheJMeter_http.jar:5.3]

at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:630) [ApacheJMeter_core.jar:5.3]

at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:558) [ApacheJMeter_core.jar:5.3]

at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489) [ApacheJMeter_core.jar:5.3]

at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) [ApacheJMeter_core.jar:5.3]

at java.lang.Thread.run(Thread.java:832) [?:?]

Caused by: com.fasterxml.jackson.core.JsonParseException: Unexpected character '#' (code 35) in prolog; expected '<'

at [row,col {unknown-source}]: [1,1]

at com.fasterxml.jackson.dataformat.xml.XmlFactory._initializeXmlReader(XmlFactory.java:690) ~[jackson-dataformat-xml-2.10.2.jar:2.10.2]

at com.fasterxml.jackson.dataformat.xml.XmlFactory._createParser(XmlFactory.java:586) ~[jackson-dataformat-xml-2.10.2.jar:2.10.2]

at com.fasterxml.jackson.dataformat.xml.XmlFactory.createParser(XmlFactory.java:464) ~[jackson-dataformat-xml-2.10.2.jar:2.10.2]

at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3214) ~[jackson-databind-2.10.3.jar:2.10.3]

at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3182) ~[jackson-databind-2.10.3.jar:2.10.3]

at io.lindstrom.mpd.MPDParser.parse(MPDParser.java:43) ~[mpd-parser-0.8-jdk8.jar:?]

at com.blazemeter.jmeter.videostreaming.dash.Manifest.fromUriAndBody(Manifest.java:54) ~[jmeter-bzm-hls-3.0.3.jar:?]

... 10 more

A snippet of the manifest file returned:

#EXTM3U

#EXT-X-VERSION:7

#EXT-X-INDEPENDENT-SEGMENTS

#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",LANGUAGE="und",CHANNELS="2",NAME="Audio Track 0",AUTOSELECT=YES,DEFAULT=YES,URI="media?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOnsidXJsIjoiczM6Ly9mcmFtZWlvLWFzc[truncated url]"

#EXT-X-STREAM-INF:BANDWIDTH=1502528,CODECS="avc1.42c01e,mp4a.40.5",RESOLUTION=640x360,FRAME-RATE=23.833333333333332,VIDEO-RANGE="SDR",AUDIO="audio"

media?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWI[truncated url]

MacOS

jmeter 5.3

Blazemeter plugin 3.0.3

[Ricardo Poleo]

Hello Neal,

I was reviewing this issue and, apparently, the URL is expired, so I can't test it out.

Have you tried the new version of the plugin? v3.1 was released not that long ago.

Please let me know if you still have any issues and, if that's the case, please share here the URL and the configurations used to investigate further.

At any rate,

Stay positive and have a great week,