Pychain HTTP server

pychain_http.py

class HttpHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        if self.path == '/blocks':
            self.set_response_headers(200)
            self.wfile.write(bytes(json.dumps(chain, default=jdefault), "utf8"))
        elif self.path == '/peers':
            self.set_response_headers(200)
            self.wfile.write(bytes(json.dumps(peers), "utf8"))
        else:
            self.set_response_headers(400, "plain/text")
            message = "Bad request"
            self.wfile.write(bytes(message, "utf8"))
        return
    def do_POST(self):
        length = int(self.headers['Content-Length'])
        post_body = json.loads(self.rfile.read(length))
        new_block = add_block(post_body["data"])
        send_broadcast(new_block)
        self.set_response_headers(201)
        self.wfile.write(bytes(json.dumps(new_block, default=jdefault), "utf-8"))
    def set_response_headers(self, code, content_type="application/json"):
        self.send_response(code)
        self.send_header("Content-type", content_type)
        self.end_headers()