Problems with flask and bad request - flask

Question

I was programming myself a pretty nice api to get some json data from my gameserver to my webspace using json,
but everytime i am sending a request using angular i am getting this:
127.0.0.1 - - [20/Mar/2018 17:07:33] code 400, message Bad request version
("▒\x9c▒▒{▒'\x12\x99▒▒▒\xadH\x00\x00\x14▒+▒/▒,▒0▒\x13▒\x14\x00/\x005\x00")
127.0.0.1 - - [20/Mar/2018 17:07:33] "▒\x9dtTc▒\x93▒4▒M▒▒▒▒▒\x9c▒▒{▒'\x99▒▒▒▒H▒+▒/▒,▒0▒▒/5"
HTTPStatus.BAD_REQUEST -
127.0.0.1 - - [20/Mar/2018 17:07:33] code 400, message Bad request syntax
('\x16\x03\x01\x00▒\x01\x00\x00\x9d\x03\x03▒k,&▒▒ua\x8c\x82\x17\x05▒QwQ$▒0▒▒\x9f▒B1\x98\x19W▒▒▒▒\x00\x00\x14▒+▒/▒,▒0▒\x13▒\x14\x00/\x005\x00')
127.0.0.1 - - [20/Mar/2018 17:07:33] "▒\x9d▒k,&▒▒ua\x8c\x82▒QwQ$▒0▒▒\x9f▒B1\x98W▒▒▒▒▒+▒/▒,▒0▒▒/5"
HTTPStatus.BAD_REQUEST -
127.0.0.1 - - [20/Mar/2018 17:07:33] code 400, message Bad request syntax
('\x16\x03\x01\x00▒\x01\x00\x00▒\x03\x03)▒▒\x1e\xa0▒\t\r\x14g%▒▒\x17▒▒\x80\x8d}▒F▒▒\x08U▒ġ▒▒\x06▒\x00\x00\x1c▒+▒/▒,▒0▒')
g%▒▒▒▒\x80\x8d}▒F▒U▒ġ▒▒▒▒+▒/▒,▒0▒" HTTPStatus.BAD_REQUEST -
My api
from flask import Flask, jsonify
from flaskext.mysql import MySQL
from flask_cors import CORS, cross_origin
app = Flask(__name__)
CORS(app)
app.config['CORS_HEADERS'] = 'Content-Type'
cors = CORS(app, resources={r"/punishments": {"origins": "http://localhost:5000" "*"}})
mysql = MySQL()
# MySQL configurations
app.config['MYSQL_DATABASE_USER'] = 'test'
app.config['MYSQL_DATABASE_PASSWORD'] = 'Biologie1'
app.config['MYSQL_DATABASE_DB'] = 'test'
app.config['MYSQL_DATABASE_HOST'] = 'localhost'
mysql.init_app(app)
#app.route('/punishments', methods=['GET'])
#cross_origin(origin='localhost:5000',headers=['Content- Type','Authorization'])
def get():
cur = mysql.connect().cursor()
cur.execute('''select * from test.punishments''')
r = [dict((cur.description[i][0], value)
for i, value in enumerate(row)) for row in cur.fetchall()]
return jsonify({'punishments' : r})
if __name__ == '__main__':
app.run()
My client function
export class ApiUserService {
private _postsURL = "https://localhost:5000/punishments";
constructor(private http: HttpClient) {
}
getPosts(): Observable<Punishments[]> {
let headers = new HttpHeaders();
headers = headers.set('Content-Type', 'application/json; charset=utf-8');
return this.http
.get(this._postsURL,{
headers: {'Content-Type':'application/json; charset=utf-8'}
})
.map((response: Response) => {
return <Punishments[]>response.json();
})
.catch(this.handleError);
}
private handleError(error: Response) {
return Observable.throw(error.statusText);
}
}

Answer 1

I had the same error as yours.
My flask server was installed inside respberry-pi and I was trying to access it using https://ip:5000.
The problem was I was using https instead of http.
When I changed it to http://ip:5000, it worked.

Answer 2

I also faced same problem
use only http not https :-
http://ip:portnumber

Answer 3

Recently I also faced this, the problem came from the SSL config on my app.
In my .env I set the SSL_DISABLE to False, then I change it to True.
change SSL_DISABLE=False to SSL_DISABLE=True
So, the point here is are: check your URL, maybe be it something like: https://127.0.0.1:5000, just change it to http://127.0.0.1:5000.
Hope it helps to someone who also facing this issue in the future.

Answer 4

in my case, i was trying to debug SocketIo server running on flask. I was trying to access the server using wss:// which was causing the bad request. Changing it to ws:// resolved the issue.

Answer 5

In my case i resolve the problem reverting flask version to Flask==1.1.4 and jinja dependency to Jinja2==3.0.3