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Lab 03 getPeers fails when run from second node with address 0.0.0.0:5001
I run two nodes for Lab 03.
For the first node, the getPeers method returns null.
For the second node run with the command:
docker run --name "blockchain-node-2" -p "5001:5001" -e node_port=5001 -e miner_address="default_address-1" -e host="0.0.0.0" blockchain4students/blockchain-node:0.1
when I send the getPeers request I get a complex failure:
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<head>
<title>requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused')) // Werkzeug Debugger</title>
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type="text/css">
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not accidentally trigger a request to /favicon.ico which might
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href="?__debugger__=yes&cmd=resource&f=console.png">
<script src="?__debugger__=yes&cmd=resource&f=debugger.js"></script>
<script type="text/javascript">
var TRACEBACK = 139898075212432,
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<body style="background-color: #fff">
<div class="debugger">
<h1>requests.exceptions.ConnectionError</h1>
<div class="detail">
<p class="errormsg">requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused'))</p>
</div>
<h2 class="traceback">Traceback <em>(most recent call last)</em></h2>
<div class="traceback">
<h3></h3>
<ul><li><div class="frame" id="frame-139898057339712">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connection.py"</cite>,
line <em class="line">174</em>,
in <code class="function">_new_conn</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if self.socket_options:</pre>
<pre class="line before"><span class="ws"> </span>extra_kw["socket_options"] = self.socket_options</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line current"><span class="ws"> </span>conn = connection.create_connection(</pre>
<pre class="line after"><span class="ws"> </span>(self._dns_host, self.port), self.timeout, **extra_kw</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>except SocketTimeout:</pre>
<pre class="line after"><span class="ws"> </span>raise ConnectTimeoutError(</pre></div>
</div>
<li><div class="frame" id="frame-139898057339904">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/util/connection.py"</cite>,
line <em class="line">95</em>,
in <code class="function">create_connection</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>if sock is not None:</pre>
<pre class="line before"><span class="ws"> </span>sock.close()</pre>
<pre class="line before"><span class="ws"> </span>sock = None</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if err is not None:</pre>
<pre class="line current"><span class="ws"> </span>raise err</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>raise socket.error("getaddrinfo returns an empty list")</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span>def _set_socket_options(sock, options):</pre></div>
</div>
<li><div class="frame" id="frame-139898057340048">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/util/connection.py"</cite>,
line <em class="line">85</em>,
in <code class="function">create_connection</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if timeout is not socket._GLOBAL_DEFAULT_TIMEOUT:</pre>
<pre class="line before"><span class="ws"> </span>sock.settimeout(timeout)</pre>
<pre class="line before"><span class="ws"> </span>if source_address:</pre>
<pre class="line before"><span class="ws"> </span>sock.bind(source_address)</pre>
<pre class="line current"><span class="ws"> </span>sock.connect(sa)</pre>
<pre class="line after"><span class="ws"> </span>return sock</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>except socket.error as e:</pre>
<pre class="line after"><span class="ws"> </span>err = e</pre>
<pre class="line after"><span class="ws"> </span>if sock is not None:</pre></div>
</div>
<li><div class="exc-divider">During handling of the above exception, another exception occurred:</div>
<li><div class="frame" id="frame-139898057339184">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py"</cite>,
line <em class="line">703</em>,
in <code class="function">urlopen</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"> </span>if is_new_proxy_conn and http_tunnel_required:</pre>
<pre class="line before"><span class="ws"> </span>self._prepare_proxy(conn)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span># Make the request on the httplib connection object.</pre>
<pre class="line current"><span class="ws"> </span>httplib_response = self._make_request(</pre>
<pre class="line after"><span class="ws"> </span>conn,</pre>
<pre class="line after"><span class="ws"> </span>method,</pre>
<pre class="line after"><span class="ws"> </span>url,</pre>
<pre class="line after"><span class="ws"> </span>timeout=timeout_obj,</pre>
<pre class="line after"><span class="ws"> </span>body=body,</pre></div>
</div>
<li><div class="frame" id="frame-139898057339328">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py"</cite>,
line <em class="line">398</em>,
in <code class="function">_make_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span># urllib3.request. It also calls makefile (recv) on the socket.</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>if chunked:</pre>
<pre class="line before"><span class="ws"> </span>conn.request_chunked(method, url, **httplib_request_kw)</pre>
<pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line current"><span class="ws"> </span>conn.request(method, url, **httplib_request_kw)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span># We are swallowing BrokenPipeError (errno.EPIPE) since the server is</pre>
<pre class="line after"><span class="ws"> </span># legitimately able to close the connection after sending a valid response.</pre>
<pre class="line after"><span class="ws"> </span># With this behaviour, the received response is still readable.</pre>
<pre class="line after"><span class="ws"> </span>except BrokenPipeError:</pre></div>
</div>
<li><div class="frame" id="frame-139898057339376">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connection.py"</cite>,
line <em class="line">239</em>,
in <code class="function">request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line before"><span class="ws"> </span># Avoid modifying the headers passed into .request()</pre>
<pre class="line before"><span class="ws"> </span>headers = headers.copy()</pre>
<pre class="line before"><span class="ws"> </span>if "user-agent" not in (six.ensure_str(k.lower()) for k in headers):</pre>
<pre class="line before"><span class="ws"> </span>headers["User-Agent"] = _get_default_user_agent()</pre>
<pre class="line current"><span class="ws"> </span>super(HTTPConnection, self).request(method, url, body=body, headers=headers)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def request_chunked(self, method, url, body=None, headers=None):</pre>
<pre class="line after"><span class="ws"> </span>"""</pre>
<pre class="line after"><span class="ws"> </span>Alternative to the common request method, which sends the</pre>
<pre class="line after"><span class="ws"> </span>body with chunked encoding and not as one block</pre></div>
</div>
<li><div class="frame" id="frame-139898057339232">
<h4>File <cite class="filename">"/usr/local/lib/python3.8/http/client.py"</cite>,
line <em class="line">1255</em>,
in <code class="function">request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self._send_output(message_body, encode_chunked=encode_chunked)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def request(self, method, url, body=None, headers={}, *,</pre>
<pre class="line before"><span class="ws"> </span>encode_chunked=False):</pre>
<pre class="line before"><span class="ws"> </span>"""Send a complete request to the server."""</pre>
<pre class="line current"><span class="ws"> </span>self._send_request(method, url, body, headers, encode_chunked)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def _send_request(self, method, url, body, headers, encode_chunked):</pre>
<pre class="line after"><span class="ws"> </span># Honor explicitly requested Host: and Accept-Encoding: headers.</pre>
<pre class="line after"><span class="ws"> </span>header_names = frozenset(k.lower() for k in headers)</pre>
<pre class="line after"><span class="ws"> </span>skips = {}</pre></div>
</div>
<li><div class="frame" id="frame-139898057339088">
<h4>File <cite class="filename">"/usr/local/lib/python3.8/http/client.py"</cite>,
line <em class="line">1301</em>,
in <code class="function">_send_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self.putheader(hdr, value)</pre>
<pre class="line before"><span class="ws"> </span>if isinstance(body, str):</pre>
<pre class="line before"><span class="ws"> </span># RFC 2616 Section 3.7.1 says that text default has a</pre>
<pre class="line before"><span class="ws"> </span># default charset of iso-8859-1.</pre>
<pre class="line before"><span class="ws"> </span>body = _encode(body, 'body')</pre>
<pre class="line current"><span class="ws"> </span>self.endheaders(body, encode_chunked=encode_chunked)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def getresponse(self):</pre>
<pre class="line after"><span class="ws"> </span>"""Get the response from the server.</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>If the HTTPConnection is in the correct state, returns an</pre></div>
</div>
<li><div class="frame" id="frame-139898057338992">
<h4>File <cite class="filename">"/usr/local/lib/python3.8/http/client.py"</cite>,
line <em class="line">1250</em>,
in <code class="function">endheaders</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>"""</pre>
<pre class="line before"><span class="ws"> </span>if self.__state == _CS_REQ_STARTED:</pre>
<pre class="line before"><span class="ws"> </span>self.__state = _CS_REQ_SENT</pre>
<pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line before"><span class="ws"> </span>raise CannotSendHeader()</pre>
<pre class="line current"><span class="ws"> </span>self._send_output(message_body, encode_chunked=encode_chunked)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def request(self, method, url, body=None, headers={}, *,</pre>
<pre class="line after"><span class="ws"> </span>encode_chunked=False):</pre>
<pre class="line after"><span class="ws"> </span>"""Send a complete request to the server."""</pre>
<pre class="line after"><span class="ws"> </span>self._send_request(method, url, body, headers, encode_chunked)</pre></div>
</div>
<li><div class="frame" id="frame-139898057339568">
<h4>File <cite class="filename">"/usr/local/lib/python3.8/http/client.py"</cite>,
line <em class="line">1010</em>,
in <code class="function">_send_output</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>A message_body may be specified, to be appended to the request.</pre>
<pre class="line before"><span class="ws"> </span>"""</pre>
<pre class="line before"><span class="ws"> </span>self._buffer.extend((b"", b""))</pre>
<pre class="line before"><span class="ws"> </span>msg = b"\r\n".join(self._buffer)</pre>
<pre class="line before"><span class="ws"> </span>del self._buffer[:]</pre>
<pre class="line current"><span class="ws"> </span>self.send(msg)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>if message_body is not None:</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span># create a consistent interface to message_body</pre>
<pre class="line after"><span class="ws"> </span>if hasattr(message_body, 'read'):</pre></div>
</div>
<li><div class="frame" id="frame-139898057339616">
<h4>File <cite class="filename">"/usr/local/lib/python3.8/http/client.py"</cite>,
line <em class="line">950</em>,
in <code class="function">send</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>file-like object that supports a .read() method, or an iterable object.</pre>
<pre class="line before"><span class="ws"> </span>"""</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if self.sock is None:</pre>
<pre class="line before"><span class="ws"> </span>if self.auto_open:</pre>
<pre class="line current"><span class="ws"> </span>self.connect()</pre>
<pre class="line after"><span class="ws"> </span>else:</pre>
<pre class="line after"><span class="ws"> </span>raise NotConnected()</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>if self.debuglevel > 0:</pre>
<pre class="line after"><span class="ws"> </span>print("send:", repr(data))</pre></div>
</div>
<li><div class="frame" id="frame-139898057339664">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connection.py"</cite>,
line <em class="line">205</em>,
in <code class="function">connect</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self._tunnel()</pre>
<pre class="line before"><span class="ws"> </span># Mark this connection as not reusable</pre>
<pre class="line before"><span class="ws"> </span>self.auto_open = 0</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def connect(self):</pre>
<pre class="line current"><span class="ws"> </span>conn = self._new_conn()</pre>
<pre class="line after"><span class="ws"> </span>self._prepare_conn(conn)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def putrequest(self, method, url, *args, **kwargs):</pre>
<pre class="line after"><span class="ws"> </span>""" """</pre>
<pre class="line after"><span class="ws"> </span># Empty docstring because the indentation of CPython's implementation</pre></div>
</div>
<li><div class="frame" id="frame-139898057339520">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connection.py"</cite>,
line <em class="line">186</em>,
in <code class="function">_new_conn</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>"Connection to %s timed out. (connect timeout=%s)"</pre>
<pre class="line before"><span class="ws"> </span>% (self.host, self.timeout),</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>except SocketError as e:</pre>
<pre class="line current"><span class="ws"> </span>raise NewConnectionError(</pre>
<pre class="line after"><span class="ws"> </span>self, "Failed to establish a new connection: %s" % e</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>return conn</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>
<li><div class="exc-divider">During handling of the above exception, another exception occurred:</div>
<li><div class="frame" id="frame-139898074537456">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/requests/adapters.py"</cite>,
line <em class="line">440</em>,
in <code class="function">send</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>else:</pre>
<pre class="line before"><span class="ws"> </span>timeout = TimeoutSauce(connect=timeout, read=timeout)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>if not chunked:</pre>
<pre class="line current"><span class="ws"> </span>resp = conn.urlopen(</pre>
<pre class="line after"><span class="ws"> </span>method=request.method,</pre>
<pre class="line after"><span class="ws"> </span>url=url,</pre>
<pre class="line after"><span class="ws"> </span>body=request.body,</pre>
<pre class="line after"><span class="ws"> </span>headers=request.headers,</pre>
<pre class="line after"><span class="ws"> </span>redirect=False,</pre></div>
</div>
<li><div class="frame" id="frame-139898057338944">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py"</cite>,
line <em class="line">785</em>,
in <code class="function">urlopen</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>elif isinstance(e, (SocketError, NewConnectionError)) and self.proxy:</pre>
<pre class="line before"><span class="ws"> </span>e = ProxyError("Cannot connect to proxy.", e)</pre>
<pre class="line before"><span class="ws"> </span>elif isinstance(e, (SocketError, HTTPException)):</pre>
<pre class="line before"><span class="ws"> </span>e = ProtocolError("Connection aborted.", e)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line current"><span class="ws"> </span>retries = retries.increment(</pre>
<pre class="line after"><span class="ws"> </span>method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]</pre>
<pre class="line after"><span class="ws"> </span>)</pre>
<pre class="line after"><span class="ws"> </span>retries.sleep()</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span># Keep track of the error for the retry warning.</pre></div>
</div>
<li><div class="frame" id="frame-139898057339136">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/urllib3/util/retry.py"</cite>,
line <em class="line">592</em>,
in <code class="function">increment</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>other=other,</pre>
<pre class="line before"><span class="ws"> </span>history=history,</pre>
<pre class="line before"><span class="ws"> </span>)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if new_retry.is_exhausted():</pre>
<pre class="line current"><span class="ws"> </span>raise MaxRetryError(_pool, url, error or ResponseError(cause))</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>log.debug("Incremented Retry for (url='%s'): %r", url, new_retry)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>return new_retry</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>
<li><div class="exc-divider">During handling of the above exception, another exception occurred:</div>
<li><div class="frame" id="frame-139898074535776">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/flask/app.py"</cite>,
line <em class="line">2091</em>,
in <code class="function">__call__</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>def __call__(self, environ: dict, start_response: t.Callable) -> t.Any:</pre>
<pre class="line before"><span class="ws"> </span>"""The WSGI server calls the Flask application object as the</pre>
<pre class="line before"><span class="ws"> </span>WSGI application. This calls :meth:`wsgi_app`, which can be</pre>
<pre class="line before"><span class="ws"> </span>wrapped to apply middleware.</pre>
<pre class="line before"><span class="ws"> </span>"""</pre>
<pre class="line current"><span class="ws"> </span>return self.wsgi_app(environ, start_response)</pre></div>
</div>
<li><div class="frame" id="frame-139898074535872">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/flask/app.py"</cite>,
line <em class="line">2076</em>,
in <code class="function">wsgi_app</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>ctx.push()</pre>
<pre class="line before"><span class="ws"> </span>response = self.full_dispatch_request()</pre>
<pre class="line before"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line before"><span class="ws"> </span>error = e</pre>
<pre class="line current"><span class="ws"> </span>response = self.handle_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>except: # noqa: B001</pre>
<pre class="line after"><span class="ws"> </span>error = sys.exc_info()[1]</pre>
<pre class="line after"><span class="ws"> </span>raise</pre>
<pre class="line after"><span class="ws"> </span>return response(environ, start_response)</pre>
<pre class="line after"><span class="ws"> </span>finally:</pre></div>
</div>
<li><div class="frame" id="frame-139898074537552">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/flask/app.py"</cite>,
line <em class="line">2073</em>,
in <code class="function">wsgi_app</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>ctx = self.request_context(environ)</pre>
<pre class="line before"><span class="ws"> </span>error: t.Optional[BaseException] = None</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>ctx.push()</pre>
<pre class="line current"><span class="ws"> </span>response = self.full_dispatch_request()</pre>
<pre class="line after"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line after"><span class="ws"> </span>error = e</pre>
<pre class="line after"><span class="ws"> </span>response = self.handle_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>except: # noqa: B001</pre>
<pre class="line after"><span class="ws"> </span>error = sys.exc_info()[1]</pre></div>
</div>
<li><div class="frame" id="frame-139898074537504">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/flask/app.py"</cite>,
line <em class="line">1518</em>,
in <code class="function">full_dispatch_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>request_started.send(self)</pre>
<pre class="line before"><span class="ws"> </span>rv = self.preprocess_request()</pre>
<pre class="line before"><span class="ws"> </span>if rv is None:</pre>
<pre class="line before"><span class="ws"> </span>rv = self.dispatch_request()</pre>
<pre class="line before"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line current"><span class="ws"> </span>rv = self.handle_user_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>return self.finalize_request(rv)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def finalize_request(</pre>
<pre class="line after"><span class="ws"> </span>self,</pre>
<pre class="line after"><span class="ws"> </span>rv: t.Union[ResponseReturnValue, HTTPException],</pre></div>
</div>
<li><div class="frame" id="frame-139898074535296">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/flask/app.py"</cite>,
line <em class="line">1516</em>,
in <code class="function">full_dispatch_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>self.try_trigger_before_first_request_functions()</pre>
<pre class="line before"><span class="ws"> </span>try:</pre>
<pre class="line before"><span class="ws"> </span>request_started.send(self)</pre>
<pre class="line before"><span class="ws"> </span>rv = self.preprocess_request()</pre>
<pre class="line before"><span class="ws"> </span>if rv is None:</pre>
<pre class="line current"><span class="ws"> </span>rv = self.dispatch_request()</pre>
<pre class="line after"><span class="ws"> </span>except Exception as e:</pre>
<pre class="line after"><span class="ws"> </span>rv = self.handle_user_exception(e)</pre>
<pre class="line after"><span class="ws"> </span>return self.finalize_request(rv)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def finalize_request(</pre></div>
</div>
<li><div class="frame" id="frame-139898074537408">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/flask/app.py"</cite>,
line <em class="line">1502</em>,
in <code class="function">dispatch_request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>getattr(rule, "provide_automatic_options", False)</pre>
<pre class="line before"><span class="ws"> </span>and req.method == "OPTIONS"</pre>
<pre class="line before"><span class="ws"> </span>):</pre>
<pre class="line before"><span class="ws"> </span>return self.make_default_options_response()</pre>
<pre class="line before"><span class="ws"> </span># otherwise dispatch to the handler for that endpoint</pre>
<pre class="line current"><span class="ws"> </span>return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def full_dispatch_request(self) -> Response:</pre>
<pre class="line after"><span class="ws"> </span>"""Dispatches the request and on top of that performs request</pre>
<pre class="line after"><span class="ws"> </span>pre and postprocessing as well as HTTP exception catching and</pre>
<pre class="line after"><span class="ws"> </span>error handling.</pre></div>
</div>
<li><div class="frame" id="frame-139898074537600">
<h4>File <cite class="filename">"/app.py"</cite>,
line <em class="line">86</em>,
in <code class="function">get_peers</code></h4>
<div class="source "><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"></span>@app.route('/getPeers', methods=['GET'])</pre>
<pre class="line before"><span class="ws"></span>def get_peers():</pre>
<pre class="line before"><span class="ws"> </span>app.logger.info("Getting peers")</pre>
<pre class="line current"><span class="ws"> </span>return jsonpickle.encode(blockchain.obtain_peer_node()), 200</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span>@app.route('/getBalance', methods=['GET'])</pre>
<pre class="line after"><span class="ws"></span>def get_balance():</pre>
<pre class="line after"><span class="ws"> </span>address = request.args.get('address')</pre>
<pre class="line after"><span class="ws"> </span>balance = blockchain.get_balance(address)</pre></div>
</div>
<li><div class="frame" id="frame-139898074535824">
<h4>File <cite class="filename">"/blockchain/blockchain_data_structure.py"</cite>,
line <em class="line">264</em>,
in <code class="function">obtain_peer_node</code></h4>
<div class="source "><pre class="line before"><span class="ws"> </span>self.peer_nodes.add(address)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>def obtain_peer_node(self):</pre>
<pre class="line before"><span class="ws"> </span>if self.address != self.discovery_node_address:</pre>
<pre class="line before"><span class="ws"> </span>self.peer_nodes.add(self.discovery_node_address) # Assuming it never crashes</pre>
<pre class="line current"><span class="ws"> </span>response = requests.post('http://{}/register/node'.format(self.discovery_node_address),</pre>
<pre class="line after"><span class="ws"> </span>json={'node_address': '{}'.format(self.address)}).json()</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>for address in response['total_nodes']:</pre>
<pre class="line after"><span class="ws"> </span># Add and register all peers</pre>
<pre class="line after"><span class="ws"> </span>try:</pre></div>
</div>
<li><div class="frame" id="frame-139898074537648">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/requests/api.py"</cite>,
line <em class="line">117</em>,
in <code class="function">post</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>:param \*\*kwargs: Optional arguments that ``request`` takes.</pre>
<pre class="line before"><span class="ws"> </span>:return: :class:`Response <Response>` object</pre>
<pre class="line before"><span class="ws"> </span>:rtype: requests.Response</pre>
<pre class="line before"><span class="ws"> </span>"""</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line current"><span class="ws"> </span>return request('post', url, data=data, json=json, **kwargs)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span>def put(url, data=None, **kwargs):</pre>
<pre class="line after"><span class="ws"> </span>r"""Sends a PUT request.</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>
<li><div class="frame" id="frame-139898074537744">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/requests/api.py"</cite>,
line <em class="line">61</em>,
in <code class="function">request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span># By using the 'with' statement we are sure the session is closed, thus we</pre>
<pre class="line before"><span class="ws"> </span># avoid leaving sockets open which can trigger a ResourceWarning in some</pre>
<pre class="line before"><span class="ws"> </span># cases, and look like a memory leak in others.</pre>
<pre class="line before"><span class="ws"> </span>with sessions.Session() as session:</pre>
<pre class="line current"><span class="ws"> </span>return session.request(method=method, url=url, **kwargs)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"></span>def get(url, params=None, **kwargs):</pre>
<pre class="line after"><span class="ws"> </span>r"""Sends a GET request.</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>
<li><div class="frame" id="frame-139898074537792">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/requests/sessions.py"</cite>,
line <em class="line">529</em>,
in <code class="function">request</code></h4>
<div class="source library"><pre class="line before"><span class="ws"> </span>send_kwargs = {</pre>
<pre class="line before"><span class="ws"> </span>'timeout': timeout,</pre>
<pre class="line before"><span class="ws"> </span>'allow_redirects': allow_redirects,</pre>
<pre class="line before"><span class="ws"> </span>}</pre>
<pre class="line before"><span class="ws"> </span>send_kwargs.update(settings)</pre>
<pre class="line current"><span class="ws"> </span>resp = self.send(prep, **send_kwargs)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>return resp</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>def get(self, url, **kwargs):</pre>
<pre class="line after"><span class="ws"> </span>r"""Sends a GET request. Returns :class:`Response` object.</pre></div>
</div>
<li><div class="frame" id="frame-139898074537936">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/requests/sessions.py"</cite>,
line <em class="line">645</em>,
in <code class="function">send</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span># Start time (approximately) of the request</pre>
<pre class="line before"><span class="ws"> </span>start = preferred_clock()</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span># Send the request</pre>
<pre class="line current"><span class="ws"> </span>r = adapter.send(request, **kwargs)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span># Total elapsed time of the request (approximately)</pre>
<pre class="line after"><span class="ws"> </span>elapsed = preferred_clock() - start</pre>
<pre class="line after"><span class="ws"> </span>r.elapsed = timedelta(seconds=elapsed)</pre>
<pre class="line after"><span class="ws"></span> </pre></div>
</div>
<li><div class="frame" id="frame-139898074537840">
<h4>File <cite class="filename">"/opt/venv/lib/python3.8/site-packages/requests/adapters.py"</cite>,
line <em class="line">519</em>,
in <code class="function">send</code></h4>
<div class="source library"><pre class="line before"><span class="ws"></span> </pre>
<pre class="line before"><span class="ws"> </span>if isinstance(e.reason, _SSLError):</pre>
<pre class="line before"><span class="ws"> </span># This branch is for urllib3 v1.22 and later.</pre>
<pre class="line before"><span class="ws"> </span>raise SSLError(e, request=request)</pre>
<pre class="line before"><span class="ws"></span> </pre>
<pre class="line current"><span class="ws"> </span>raise ConnectionError(e, request=request)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>except ClosedPoolError as e:</pre>
<pre class="line after"><span class="ws"> </span>raise ConnectionError(e, request=request)</pre>
<pre class="line after"><span class="ws"></span> </pre>
<pre class="line after"><span class="ws"> </span>except _ProxyError as e:</pre></div>
</div>
</ul>
<blockquote>requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused'))</blockquote>
</div>
<div class="plain">
<p>
This is the Copy/Paste friendly version of the traceback.
</p>
<textarea cols="50" rows="10" name="code" readonly>Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 174, in _new_conn
conn = connection.create_connection(
File "/opt/venv/lib/python3.8/site-packages/urllib3/util/connection.py", line 95, in create_connection
raise err
File "/opt/venv/lib/python3.8/site-packages/urllib3/util/connection.py", line 85, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 703, in urlopen
httplib_response = self._make_request(
File "/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 398, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 239, in request
super(HTTPConnection, self).request(method, url, body=body, headers=headers)
File "/usr/local/lib/python3.8/http/client.py", line 1255, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/local/lib/python3.8/http/client.py", line 1301, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.8/http/client.py", line 1250, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.8/http/client.py", line 1010, in _send_output
self.send(msg)
File "/usr/local/lib/python3.8/http/client.py", line 950, in send
self.connect()
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 205, in connect
conn = self._new_conn()
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 186, in _new_conn
raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/requests/adapters.py", line 440, in send
resp = conn.urlopen(
File "/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 785, in urlopen
retries = retries.increment(
File "/opt/venv/lib/python3.8/site-packages/urllib3/util/retry.py", line 592, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 2091, in __call__
return self.wsgi_app(environ, start_response)
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 2076, in wsgi_app
response = self.handle_exception(e)
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "/app.py", line 86, in get_peers
return jsonpickle.encode(blockchain.obtain_peer_node()), 200
File "/blockchain/blockchain_data_structure.py", line 264, in obtain_peer_node
response = requests.post('http://{}/register/node'.format(self.discovery_node_address),
File "/opt/venv/lib/python3.8/site-packages/requests/api.py", line 117, in post
return request('post', url, data=data, json=json, **kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/api.py", line 61, in request
return session.request(method=method, url=url, **kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/sessions.py", line 529, in request
resp = self.send(prep, **send_kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/sessions.py", line 645, in send
r = adapter.send(request, **kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/adapters.py", line 519, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused'))</textarea>
</div>
<div class="explanation">
The debugger caught an exception in your WSGI application. You can now
look at the traceback which led to the error. <span class="nojavascript">
If you enable JavaScript you can also use additional features such as code
execution (if the evalex feature is enabled), automatic pasting of the
exceptions and much more.</span>
</div>
<div class="footer">
Brought to you by <strong class="arthur">DON'T PANIC</strong>, your
friendly Werkzeug powered traceback interpreter.
</div>
</div>
<div class="pin-prompt">
<div class="inner">
<h3>Console Locked</h3>
<p>
The console is locked and needs to be unlocked by entering the PIN.
You can find the PIN printed out on the standard output of your
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<form>
<p>PIN:
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</html>
<!--
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 174, in _new_conn
conn = connection.create_connection(
File "/opt/venv/lib/python3.8/site-packages/urllib3/util/connection.py", line 95, in create_connection
raise err
File "/opt/venv/lib/python3.8/site-packages/urllib3/util/connection.py", line 85, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 703, in urlopen
httplib_response = self._make_request(
File "/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 398, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 239, in request
super(HTTPConnection, self).request(method, url, body=body, headers=headers)
File "/usr/local/lib/python3.8/http/client.py", line 1255, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/local/lib/python3.8/http/client.py", line 1301, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.8/http/client.py", line 1250, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.8/http/client.py", line 1010, in _send_output
self.send(msg)
File "/usr/local/lib/python3.8/http/client.py", line 950, in send
self.connect()
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 205, in connect
conn = self._new_conn()
File "/opt/venv/lib/python3.8/site-packages/urllib3/connection.py", line 186, in _new_conn
raise NewConnectionError(
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/requests/adapters.py", line 440, in send
resp = conn.urlopen(
File "/opt/venv/lib/python3.8/site-packages/urllib3/connectionpool.py", line 785, in urlopen
retries = retries.increment(
File "/opt/venv/lib/python3.8/site-packages/urllib3/util/retry.py", line 592, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused'))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 2091, in __call__
return self.wsgi_app(environ, start_response)
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 2076, in wsgi_app
response = self.handle_exception(e)
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "/opt/venv/lib/python3.8/site-packages/flask/app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "/app.py", line 86, in get_peers
return jsonpickle.encode(blockchain.obtain_peer_node()), 200
File "/blockchain/blockchain_data_structure.py", line 264, in obtain_peer_node
response = requests.post('http://{}/register/node'.format(self.discovery_node_address),
File "/opt/venv/lib/python3.8/site-packages/requests/api.py", line 117, in post
return request('post', url, data=data, json=json, **kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/api.py", line 61, in request
return session.request(method=method, url=url, **kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/sessions.py", line 529, in request
resp = self.send(prep, **send_kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/sessions.py", line 645, in send
r = adapter.send(request, **kwargs)
File "/opt/venv/lib/python3.8/site-packages/requests/adapters.py", line 519, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='0.0.0.0', port=5000): Max retries exceeded with url: /register/node (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f3c8f099b20>: Failed to establish a new connection: [Errno 111] Connection refused'))
-->
Seems like for the version of docker I am running the address 0.0.0.0:5001 cannot invoke the register node method at 0.0.0.0:5000. Do I need to setup a network specification with a docker compose file to allow this to happen?
