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Fixing - MIME type ("text/x-python") that is not "text/event-stream"
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Fixing - MIME type ("text/x-python") that is not "text/event-stream"
mostek_6502
Unladen Swallow
Posts: 2
Threads: 1
Joined: Sep 2017
Reputation: 0
#1
Sep-22-2017, 03:37 PM
Dear Python Experts:

I am very new to web development, although I've been programming on some level for a few decades.
I started with the Python forum because I am sure that a Python dev has probably run into this.
Also, I know that this could very well be a simple HTML issue.

My setup is Ubuntu 16.x, Apache2, HTML / JS and Python on the Server.
I'm 'trying' to use an SSE / Python / HTML - JS combo for the streaming of data from an Apache server to the browser.

The Issue:
My chrome browser indicates the following:

EventSource's response has a MIME type ("text/x-python") that is not "text/event-stream".
Aborting the connection.


Below I provided:
  • Python script
  • index.html - JS / HTML
  • Apache Access Log (portion)
  • Apache Error Log (portion)
  • Some highlighting to (potentially) help narrow the focus.


Thank you for looking at this.


Python Script:
This script resides on the Apache server at /var/www/HTML/Int_SSE.py and uses -wxrwxrwxr for rights.
*The rights and location NEED to change; but, this issue is more important.

PyCharm Result Output - Works as expected.
linux CLI: 'python /var/www/HTML/Int_SSE.py' - Works as expected.


#!/usr/bin/env python
# -*- coding: UTF-8 -*-# enable debugging

import sys
import time

def SendData():

print("Content-Type: text/event-stream\n\n")

iCount = 0;

while (True):
    iCount = iCount + 1

    print('event: message\n' + 'data: {"EEPROM_RebootCount": ' + '"' + str(iCount) + '"' + '}\n\n')

    sys.stdout.flush()
    time.sleep(1)

SendData()
index.html - HTML / Java Script

var evtSource = new EventSource('Int_SSE.py');
console.log('Credentials: ' + evtSource.withCredentials);
console.log('Ready State: ' + evtSource.readyState);
console.log(' URL: ' + evtSource.url);

... various checks, etc...

evtSource.onerror = function() { console.log("EventSource failed."); evtSource.close(); };



Chrome Console
Credentials: false
Ready State: 0
http://192.168.1.50/Int_SSE.py
EventSource's response has a MIME type ("text/x-python")
that is not "text/event-stream". Aborting the connection.
EventSource failed.

The console messages from index.html / js are being displayed as expected.
192.168.50 is the Apache Server
These are the ONLY messages in the console.



Apache Logs
/var/log/apache2/access.log
192.168.1.51 - - [22/Sep/2017:07:11:14 -0500]
"GET / HTTP/1.1" 200 2876 "-"
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36"
192.168.1.51 - - [22/Sep/2017:07:11:14 -0500]
"GET /Assets/CSS/default.css HTTP/1.1" 200 873 "http://192.168.1.50/"
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36"
192.168.1.51 - - [22/Sep/2017:07:11:14 -0500]
"GET /Int_SSE.py HTTP/1.1" 200 773 "http://192.168.1.50/"
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36"


*The following is a little longer. I cut out content that I thought was completely unnecessary. If you scroll toward the bottom, an underlined row seems to be where the interesting part begins.

/var/log/apache2/error.log
[Fri Sep 22 07:11:14 event.c(1585): connections: 0 (clogged: 0 write-completion: 0 keep-alive: 0 lingering: 0 suspended: 0)
[Fri Sep 22 07:11:14 connections: 0 (clogged: 0 write-completion: 0 keep-alive: 0 lingering: 0 suspended: 0)
[Fri Sep 22 07:11:14 Request received from client: GET / HTTP/1.1
[Fri Sep 22 07:11:14 Headers received from client:
[Fri Sep 22 07:11:14 Host: 192.168.1.50
[Fri Sep 22 07:11:14 Connection: keep-alive
[Fri Sep 22 07:11:14 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36
[Fri Sep 22 07:11:14 Upgrade-Insecure-Requests: 1
[Fri Sep 22 07:11:14 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
[Fri Sep 22 07:11:14 Accept-Encoding: gzip, deflate
[Fri Sep 22 07:11:14 Accept-Language: en-US,en;q=0.8
[Fri Sep 22 07:11:14 AH01626: authorization result of Require all granted: granted
[Fri Sep 22 07:11:14 AH01626: authorization result of <RequireAny>: granted
[Fri Sep 22 07:11:14 request authorized without authentication by access_checker_ex hook: /
[Fri Sep 22 07:11:14 Content-Type 'text/html' ...
[Fri Sep 22 07:11:14 ... did not match 'application/xml'
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match
[Fri Sep 22 07:11:14 Content-Type 'text/html' ...
[Fri Sep 22 07:11:14 ... did not match 'application/rss+xml'
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match
[Fri Sep 22 07:11:14 Content-Type 'text/html' ...
[Fri Sep 22 07:11:14 ... did not match 'application/x-javascript'
[Fri Sep 22 07:11:14 ... did not match 'application/javascript'
[Fri Sep 22 07:11:14 ... did not match 'application/ecmascript'
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match
[Fri Sep 22 07:11:14 Content-Type 'text/html' ...
[Fri Sep 22 07:11:14 ... did not match 'text/css'
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match
[Fri Sep 22 07:11:14 Content-Type 'text/html' ...
[Fri Sep 22 07:11:14 ... matched 'text/html'
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' matched
[Fri Sep 22 07:11:14 AH01384: Zlib: Compressed 8982 to 2519 : URL /index.html
[Fri Sep 22 07:11:14 Response sent with status 200, headers:
[Fri Sep 22 07:11:14 Date: Fri, 22 Sep 2017 12:11:14 GMT
[Fri Sep 22 07:11:14 Server: Apache/2.4.18 (Ubuntu)
[Fri Sep 22 07:11:14 Last-Modified: Fri, 22 Sep 2017 00:38:09 GMT
[Fri Sep 22 07:11:14 ETag: \\"2316-559bc6c48fe40-gzip\\"
[Fri Sep 22 07:11:14 Accept-Ranges: bytes
[Fri Sep 22 07:11:14 Vary: Accept-Encoding
[Fri Sep 22 07:11:14 Content-Encoding: gzip
[Fri Sep 22 07:11:14 Content-Length: 2537
[Fri Sep 22 07:11:14 Keep-Alive: timeout=5, max=100
[Fri Sep 22 07:11:14 Connection: Keep-Alive
[Fri Sep 22 07:11:14 Content-Type: text/html
[Fri Sep 22 07:11:14 Request received from client: GET /Assets/CSS/default.css HTTP/1.1
[Fri Sep 22 07:11:14 Headers received from client:, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Host: 192.168.1.50, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Connection: keep-alive, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept: text/css,*/*;q=0.1, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Referer: http://192.168.1.50/, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept-Encoding: gzip, deflate, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept-Language: en-US,en;q=0.8, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 AH01626: authorization result of Require all granted: granted, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 AH01626: authorization result of <RequireAny>: granted, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 request authorized without authentication by access_checker_ex hook: /Assets/CSS/default.css, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/css' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/xml', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/css' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/rss+xml', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/css' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/x-javascript', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/javascript', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/ecmascript', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/css' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... matched 'text/css', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' matched, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 AH01384: Zlib: Compressed 1199 to 520 : URL /Assets/CSS/default.css, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Response sent with status 200, headers:, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Date: Fri, 22 Sep 2017 12:11:14 GMT, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Server: Apache/2.4.18 (Ubuntu), referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Last-Modified: Fri, 15 Sep 2017 22:50:17 GMT, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ETag: \\"4af-559423779dc40-gzip\\", referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept-Ranges: bytes, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Vary: Accept-Encoding, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Encoding: gzip, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Length: 538, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Keep-Alive: timeout=5, max=99, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Connection: Keep-Alive, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type: text/css, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Request received from client: GET /Int_SSE.py HTTP/1.1
[Fri Sep 22 07:11:14 Headers received from client:, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Host: 192.168.1.50, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Connection: keep-alive, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept: text/event-stream, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Cache-Control: no-cache, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.91 Safari/537.36, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Referer: http://192.168.1.50/, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept-Encoding: gzip, deflate, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept-Language: en-US,en;q=0.8, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 AH01626: authorization result of Require all granted: granted, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 AH01626: authorization result of <RequireAny>: granted, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 request authorized without authentication by access_checker_ex hook: /Int_SSE.py, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/x-python' ..., referer: http://192.168.1.50/[/color]
[Fri Sep 22 07:11:14 ... did not match 'application/xml', referer: http://192.168.1.50/[/color]
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/x-python' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/rss+xml', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/x-python' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/x-javascript', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/javascript', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'application/ecmascript', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/x-python' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'text/css', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type 'text/x-python' ..., referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'text/html', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'text/plain', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ... did not match 'text/xml', referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type condition for 'deflate' did not match, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Response sent with status 200, headers:, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Date: Fri, 22 Sep 2017 12:11:14 GMT, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Server: Apache/2.4.18 (Ubuntu), referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Last-Modified: Fri, 22 Sep 2017 12:08:33 GMT, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 ETag: \\"1e5-559c611591240\\", referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Accept-Ranges: bytes, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Length: 485, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Keep-Alive: timeout=5, max=98, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Connection: Keep-Alive, referer: http://192.168.1.50/
[Fri Sep 22 07:11:14 Content-Type: text/x-python, referer: http://192.168.1.50/
[Fri Sep 22 07:11:15 connections: 0 (clogged: 0 write-completion: 0 keep-alive: 0 lingering: 0 suspended: 0)
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Messages In This Thread
Fixing - MIME type ("text/x-python") that is not "text/event-stream" - by mostek_6502 - Sep-22-2017, 03:37 PM

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