Method start

test/functional/test_framework/test_node.py:201–231

Start the node.

(self, extra_args=None, *, cwd=None, stdout=None, stderr=None, **kwargs)

            return getattr(RPCOverloadWrapper(self.rpc, descriptors=self.descriptors), name)

    def start(self, extra_args=None, *, cwd=None, stdout=None, stderr=None, **kwargs):
        """Start the node."""
        if extra_args is None:
            extra_args = self.extra_args

        # Add a new stdout and stderr file each time bitcoind is started
        if stderr is None:
            stderr = tempfile.NamedTemporaryFile(dir=self.stderr_dir, delete=False)
        if stdout is None:
            stdout = tempfile.NamedTemporaryFile(dir=self.stdout_dir, delete=False)
        self.stderr = stderr
        self.stdout = stdout

        if cwd is None:
            cwd = self.cwd

        # Delete any existing cookie file -- if such a file exists (eg due to
        # unclean shutdown), it will get overwritten anyway by bitcoind, and
        # potentially interfere with our attempt to authenticate
        delete_cookie_file(self.datadir, self.chain)

        # add environment variable LIBC_FATAL_STDERR_=1 so that libc errors are written to stderr and not the terminal
        subp_env = dict(os.environ, LIBC_FATAL_STDERR_="1")

        self.process = subprocess.Popen(self.args + extra_args, env=subp_env, stdout=stdout, stderr=stderr, cwd=cwd, **kwargs)

        self.running = True
        self.log.debug("bitcoind started, waiting for RPC to come up")

        if self.start_perf:
            self._start_perf()

    def wait_for_rpc_connection(self):
        """Sets up an RPC connection to the bitcoind process. Returns False if unable to connect."""