prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Plugin App17 cannot fetch any stream
  ## Plugin Issue
  
  <!-- Replace [ ] with [x] in order to check the box -->
  - [x] This is a plugin issue and I have read the contribution guidelines.
  
  
  ### Description
  
  `Stream currently unavailable.`
  The output of the Streamlink is always the same. Even if the streamer is streaming online.
  
  ### Reproduction steps / Explicit stream URLs to test
  
  <!-- How can we reproduce this? Please note the exact steps below using the list format supplied. If you need more steps please add them. -->
  
  Paste any URL (e.g., `https://17.live/live/{any stream ID}`) and execute the command.
  
  
  ### Log output
  
  <!--
  TEXT LOG OUTPUT IS REQUIRED for a plugin issue!
  Use the `--loglevel debug` parameter and avoid using parameters which suppress log output.
  https://streamlink.github.io/cli.html#cmdoption-l
  
  Make sure to **remove usernames and passwords**
  You can copy the output to https://gist.github.com/ or paste it below.
  -->
  
  ```
  C:\>streamlink https://17.live/live/7000362 -l trace
  [22:44:25,408][cli][debug] OS:         Windows 10
  [22:44:25,409][cli][debug] Python:     3.6.6
  [22:44:25,410][cli][debug] Streamlink: 1.4.1
  [22:44:25,410][cli][debug] Requests(2.23.0), Socks(1.7.1), Websocket(0.57.0)
  [22:44:25,410][cli][info] Found matching plugin app17 for URL https://17.live/live/7000362
  [22:44:25,735][plugin.app17][info] Stream currently unavailable.
  error: No playable streams found on this URL: https://17.live/live/7000362
  ```
  
  
  ### Additional comments, screenshots, etc.
  
  [screenshot](https://imgur.com/MFn7K0y)
  
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `src/streamlink/plugins/app17.py`
  Content:
  ```
  1 import re
  2 
  3 from streamlink.plugin import Plugin
  4 from streamlink.plugin.api import useragents
  5 from streamlink.stream import HLSStream, RTMPStream, HTTPStream
  6 
  7 API_URL = "https://api-dsa.17app.co/api/v1/liveStreams/getLiveStreamInfo"
  8 
  9 _url_re = re.compile(r"https://17.live/live/(?P<channel>[^/&?]+)")
  10 _status_re = re.compile(r'\\"closeBy\\":\\"\\"')
  11 _rtmp_re = re.compile(r'\\"url\\"\s*:\s*\\"(.+?)\\"')
  12 
  13 
  14 class App17(Plugin):
  15     @classmethod
  16     def can_handle_url(cls, url):
  17         return _url_re.match(url)
  18 
  19     def _get_streams(self):
  20         match = _url_re.match(self.url)
  21         channel = match.group("channel")
  22 
  23         self.session.http.headers.update({'User-Agent': useragents.CHROME, 'Referer': self.url})
  24 
  25         payload = '{"liveStreamID": "%s"}' % (channel)
  26         res = self.session.http.post(API_URL, data=payload)
  27         status = _status_re.search(res.text)
  28         if not status:
  29             self.logger.info("Stream currently unavailable.")
  30             return
  31 
  32         http_url = _rtmp_re.search(res.text).group(1)
  33         https_url = http_url.replace("http:", "https:")
  34         yield "live", HTTPStream(self.session, https_url)
  35 
  36         if 'pull-rtmp' in http_url:
  37             rtmp_url = http_url.replace("http:", "rtmp:").replace(".flv", "")
  38             stream = RTMPStream(self.session, {
  39                 "rtmp": rtmp_url,
  40                 "live": True,
  41                 "pageUrl": self.url,
  42             })
  43             yield "live", stream
  44 
  45         if 'wansu-' in http_url:
  46             hls_url = http_url.replace(".flv", "/playlist.m3u8")
  47         else:
  48             hls_url = http_url.replace("live-hdl", "live-hls").replace(".flv", ".m3u8")
  49 
  50         s = []
  51         for s in HLSStream.parse_variant_playlist(self.session, hls_url).items():
  52             yield s
  53         if not s:
  54             yield "live", HLSStream(self.session, hls_url)
  55 
  56 
  57 __plugin__ = App17
  58
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/src/streamlink/plugins/app17.py b/src/streamlink/plugins/app17.py
  --- a/src/streamlink/plugins/app17.py
  +++ b/src/streamlink/plugins/app17.py
  @@ -1,35 +1,49 @@
  +import logging
   import re
   
   from streamlink.plugin import Plugin
  -from streamlink.plugin.api import useragents
  +from streamlink.plugin.api import useragents, validate
   from streamlink.stream import HLSStream, RTMPStream, HTTPStream
   
  -API_URL = "https://api-dsa.17app.co/api/v1/liveStreams/getLiveStreamInfo"
  -
  -_url_re = re.compile(r"https://17.live/live/(?P<channel>[^/&?]+)")
  -_status_re = re.compile(r'\\"closeBy\\":\\"\\"')
  -_rtmp_re = re.compile(r'\\"url\\"\s*:\s*\\"(.+?)\\"')
  +log = logging.getLogger(__name__)
   
   
   class App17(Plugin):
  +    _url_re = re.compile(r"https://17.live/live/(?P<channel>[^/&?]+)")
  +    API_URL = "https://api-dsa.17app.co/api/v1/lives/{0}/viewers/alive"
  +
  +    _api_schema = validate.Schema(
  +        {
  +            "rtmpUrls": [{
  +                validate.optional("provider"): validate.any(int, None),
  +                "url": validate.url(),
  +            }],
  +        },
  +        validate.get("rtmpUrls"),
  +    )
  +
       @classmethod
       def can_handle_url(cls, url):
  -        return _url_re.match(url)
  +        return cls._url_re.match(url) is not None
   
       def _get_streams(self):
  -        match = _url_re.match(self.url)
  +        match = self._url_re.match(self.url)
           channel = match.group("channel")
   
           self.session.http.headers.update({'User-Agent': useragents.CHROME, 'Referer': self.url})
   
  -        payload = '{"liveStreamID": "%s"}' % (channel)
  -        res = self.session.http.post(API_URL, data=payload)
  -        status = _status_re.search(res.text)
  -        if not status:
  -            self.logger.info("Stream currently unavailable.")
  +        data = '{"liveStreamID":"%s"}' % (channel)
  +
  +        try:
  +            res = self.session.http.post(self.API_URL.format(channel), data=data)
  +            res_json = self.session.http.json(res, schema=self._api_schema)
  +            log.trace("{0!r}".format(res_json))
  +            http_url = res_json[0]["url"]
  +        except Exception as e:
  +            log.info("Stream currently unavailable.")
  +            log.debug(str(e))
               return
   
  -        http_url = _rtmp_re.search(res.text).group(1)
           https_url = http_url.replace("http:", "https:")
           yield "live", HTTPStream(self.session, https_url)
   
  @@ -47,11 +61,16 @@
           else:
               hls_url = http_url.replace("live-hdl", "live-hls").replace(".flv", ".m3u8")
   
  -        s = []
  -        for s in HLSStream.parse_variant_playlist(self.session, hls_url).items():
  -            yield s
  +        s = HLSStream.parse_variant_playlist(self.session, hls_url)
           if not s:
               yield "live", HLSStream(self.session, hls_url)
  +        else:
  +            if len(s) == 1:
  +                for _n, _s in s.items():
  +                    yield "live", _s
  +            else:
  +                for _s in s.items():
  +                    yield _s
   
   
   __plugin__ = App17
  
verification_info: {"golden_diff": "diff --git a/src/streamlink/plugins/app17.py b/src/streamlink/plugins/app17.py\n--- a/src/streamlink/plugins/app17.py\n+++ b/src/streamlink/plugins/app17.py\n@@ -1,35 +1,49 @@\n+import logging\n import re\n \n from streamlink.plugin import Plugin\n-from streamlink.plugin.api import useragents\n+from streamlink.plugin.api import useragents, validate\n from streamlink.stream import HLSStream, RTMPStream, HTTPStream\n \n-API_URL = \"https://api-dsa.17app.co/api/v1/liveStreams/getLiveStreamInfo\"\n-\n-_url_re = re.compile(r\"https://17.live/live/(?P<channel>[^/&?]+)\")\n-_status_re = re.compile(r'\\\\\"closeBy\\\\\":\\\\\"\\\\\"')\n-_rtmp_re = re.compile(r'\\\\\"url\\\\\"\\s*:\\s*\\\\\"(.+?)\\\\\"')\n+log = logging.getLogger(__name__)\n \n \n class App17(Plugin):\n+    _url_re = re.compile(r\"https://17.live/live/(?P<channel>[^/&?]+)\")\n+    API_URL = \"https://api-dsa.17app.co/api/v1/lives/{0}/viewers/alive\"\n+\n+    _api_schema = validate.Schema(\n+        {\n+            \"rtmpUrls\": [{\n+                validate.optional(\"provider\"): validate.any(int, None),\n+                \"url\": validate.url(),\n+            }],\n+        },\n+        validate.get(\"rtmpUrls\"),\n+    )\n+\n     @classmethod\n     def can_handle_url(cls, url):\n-        return _url_re.match(url)\n+        return cls._url_re.match(url) is not None\n \n     def _get_streams(self):\n-        match = _url_re.match(self.url)\n+        match = self._url_re.match(self.url)\n         channel = match.group(\"channel\")\n \n         self.session.http.headers.update({'User-Agent': useragents.CHROME, 'Referer': self.url})\n \n-        payload = '{\"liveStreamID\": \"%s\"}' % (channel)\n-        res = self.session.http.post(API_URL, data=payload)\n-        status = _status_re.search(res.text)\n-        if not status:\n-            self.logger.info(\"Stream currently unavailable.\")\n+        data = '{\"liveStreamID\":\"%s\"}' % (channel)\n+\n+        try:\n+            res = self.session.http.post(self.API_URL.format(channel), data=data)\n+            res_json = self.session.http.json(res, schema=self._api_schema)\n+            log.trace(\"{0!r}\".format(res_json))\n+            http_url = res_json[0][\"url\"]\n+        except Exception as e:\n+            log.info(\"Stream currently unavailable.\")\n+            log.debug(str(e))\n             return\n \n-        http_url = _rtmp_re.search(res.text).group(1)\n         https_url = http_url.replace(\"http:\", \"https:\")\n         yield \"live\", HTTPStream(self.session, https_url)\n \n@@ -47,11 +61,16 @@\n         else:\n             hls_url = http_url.replace(\"live-hdl\", \"live-hls\").replace(\".flv\", \".m3u8\")\n \n-        s = []\n-        for s in HLSStream.parse_variant_playlist(self.session, hls_url).items():\n-            yield s\n+        s = HLSStream.parse_variant_playlist(self.session, hls_url)\n         if not s:\n             yield \"live\", HLSStream(self.session, hls_url)\n+        else:\n+            if len(s) == 1:\n+                for _n, _s in s.items():\n+                    yield \"live\", _s\n+            else:\n+                for _s in s.items():\n+                    yield _s\n \n \n __plugin__ = App17\n", "issue": "Plugin App17 cannot fetch any stream\n## Plugin Issue\r\n\r\n<!-- Replace [ ] with [x] in order to check the box -->\r\n- [x] This is a plugin issue and I have read the contribution guidelines.\r\n\r\n\r\n### Description\r\n\r\n`Stream currently unavailable.`\r\nThe output of the Streamlink is always the same. Even if the streamer is streaming online.\r\n\r\n### Reproduction steps / Explicit stream URLs to test\r\n\r\n<!-- How can we reproduce this? Please note the exact steps below using the list format supplied. If you need more steps please add them. -->\r\n\r\nPaste any URL (e.g., `https://17.live/live/{any stream ID}`) and execute the command.\r\n\r\n\r\n### Log output\r\n\r\n<!--\r\nTEXT LOG OUTPUT IS REQUIRED for a plugin issue!\r\nUse the `--loglevel debug` parameter and avoid using parameters which suppress log output.\r\nhttps://streamlink.github.io/cli.html#cmdoption-l\r\n\r\nMake sure to **remove usernames and passwords**\r\nYou can copy the output to https://gist.github.com/ or paste it below.\r\n-->\r\n\r\n```\r\nC:\\>streamlink https://17.live/live/7000362 -l trace\r\n[22:44:25,408][cli][debug] OS:         Windows 10\r\n[22:44:25,409][cli][debug] Python:     3.6.6\r\n[22:44:25,410][cli][debug] Streamlink: 1.4.1\r\n[22:44:25,410][cli][debug] Requests(2.23.0), Socks(1.7.1), Websocket(0.57.0)\r\n[22:44:25,410][cli][info] Found matching plugin app17 for URL https://17.live/live/7000362\r\n[22:44:25,735][plugin.app17][info] Stream currently unavailable.\r\nerror: No playable streams found on this URL: https://17.live/live/7000362\r\n```\r\n\r\n\r\n### Additional comments, screenshots, etc.\r\n\r\n[screenshot](https://imgur.com/MFn7K0y)\r\n\n", "before_files": [{"content": "import re\n\nfrom streamlink.plugin import Plugin\nfrom streamlink.plugin.api import useragents\nfrom streamlink.stream import HLSStream, RTMPStream, HTTPStream\n\nAPI_URL = \"https://api-dsa.17app.co/api/v1/liveStreams/getLiveStreamInfo\"\n\n_url_re = re.compile(r\"https://17.live/live/(?P<channel>[^/&?]+)\")\n_status_re = re.compile(r'\\\\\"closeBy\\\\\":\\\\\"\\\\\"')\n_rtmp_re = re.compile(r'\\\\\"url\\\\\"\\s*:\\s*\\\\\"(.+?)\\\\\"')\n\n\nclass App17(Plugin):\n    @classmethod\n    def can_handle_url(cls, url):\n        return _url_re.match(url)\n\n    def _get_streams(self):\n        match = _url_re.match(self.url)\n        channel = match.group(\"channel\")\n\n        self.session.http.headers.update({'User-Agent': useragents.CHROME, 'Referer': self.url})\n\n        payload = '{\"liveStreamID\": \"%s\"}' % (channel)\n        res = self.session.http.post(API_URL, data=payload)\n        status = _status_re.search(res.text)\n        if not status:\n            self.logger.info(\"Stream currently unavailable.\")\n            return\n\n        http_url = _rtmp_re.search(res.text).group(1)\n        https_url = http_url.replace(\"http:\", \"https:\")\n        yield \"live\", HTTPStream(self.session, https_url)\n\n        if 'pull-rtmp' in http_url:\n            rtmp_url = http_url.replace(\"http:\", \"rtmp:\").replace(\".flv\", \"\")\n            stream = RTMPStream(self.session, {\n                \"rtmp\": rtmp_url,\n                \"live\": True,\n                \"pageUrl\": self.url,\n            })\n            yield \"live\", stream\n\n        if 'wansu-' in http_url:\n            hls_url = http_url.replace(\".flv\", \"/playlist.m3u8\")\n        else:\n            hls_url = http_url.replace(\"live-hdl\", \"live-hls\").replace(\".flv\", \".m3u8\")\n\n        s = []\n        for s in HLSStream.parse_variant_playlist(self.session, hls_url).items():\n            yield s\n        if not s:\n            yield \"live\", HLSStream(self.session, hls_url)\n\n\n__plugin__ = App17\n", "path": "src/streamlink/plugins/app17.py"}], "after_files": [{"content": "import logging\nimport re\n\nfrom streamlink.plugin import Plugin\nfrom streamlink.plugin.api import useragents, validate\nfrom streamlink.stream import HLSStream, RTMPStream, HTTPStream\n\nlog = logging.getLogger(__name__)\n\n\nclass App17(Plugin):\n    _url_re = re.compile(r\"https://17.live/live/(?P<channel>[^/&?]+)\")\n    API_URL = \"https://api-dsa.17app.co/api/v1/lives/{0}/viewers/alive\"\n\n    _api_schema = validate.Schema(\n        {\n            \"rtmpUrls\": [{\n                validate.optional(\"provider\"): validate.any(int, None),\n                \"url\": validate.url(),\n            }],\n        },\n        validate.get(\"rtmpUrls\"),\n    )\n\n    @classmethod\n    def can_handle_url(cls, url):\n        return cls._url_re.match(url) is not None\n\n    def _get_streams(self):\n        match = self._url_re.match(self.url)\n        channel = match.group(\"channel\")\n\n        self.session.http.headers.update({'User-Agent': useragents.CHROME, 'Referer': self.url})\n\n        data = '{\"liveStreamID\":\"%s\"}' % (channel)\n\n        try:\n            res = self.session.http.post(self.API_URL.format(channel), data=data)\n            res_json = self.session.http.json(res, schema=self._api_schema)\n            log.trace(\"{0!r}\".format(res_json))\n            http_url = res_json[0][\"url\"]\n        except Exception as e:\n            log.info(\"Stream currently unavailable.\")\n            log.debug(str(e))\n            return\n\n        https_url = http_url.replace(\"http:\", \"https:\")\n        yield \"live\", HTTPStream(self.session, https_url)\n\n        if 'pull-rtmp' in http_url:\n            rtmp_url = http_url.replace(\"http:\", \"rtmp:\").replace(\".flv\", \"\")\n            stream = RTMPStream(self.session, {\n                \"rtmp\": rtmp_url,\n                \"live\": True,\n                \"pageUrl\": self.url,\n            })\n            yield \"live\", stream\n\n        if 'wansu-' in http_url:\n            hls_url = http_url.replace(\".flv\", \"/playlist.m3u8\")\n        else:\n            hls_url = http_url.replace(\"live-hdl\", \"live-hls\").replace(\".flv\", \".m3u8\")\n\n        s = HLSStream.parse_variant_playlist(self.session, hls_url)\n        if not s:\n            yield \"live\", HLSStream(self.session, hls_url)\n        else:\n            if len(s) == 1:\n                for _n, _s in s.items():\n                    yield \"live\", _s\n            else:\n                for _s in s.items():\n                    yield _s\n\n\n__plugin__ = App17\n", "path": "src/streamlink/plugins/app17.py"}]}