RunPod•4mo ago

issue with websocket (wss) port on runpods

hi there! i’m working on a real-time sdxl example and have tried several times, but for some reason, the websocket (wss) port never works with runpods. it works fine with http, but not with wss. any help would be appreciated!

15 Replies

Madiator2011 (Work)•4mo ago

Move port from http to tcp as cloudflare proxy not support websocket

suhailOP•4mo ago

can you please elaborate?

Madiator2011 (Work)•4mo ago

move your app port from http ports to tcp ports in your template

suhailOP•4mo ago

yep, i did: the flask server is running but still i can't connect to wss url here is my code for a simple wss server:

from flask import Flask
from flask_socketio import SocketIO, emit
from diffusers import AutoPipelineForText2Image
import torch
from io import BytesIO
import base64
import time

app = Flask(__name__)
socketio = SocketIO(app)


print("Loading the SDXL Turbo model... This might take a moment.")
model = AutoPipelineForText2Image.from_pretrained(
    "stabilityai/sdxl-turbo", torch_dtype=torch.float16, variant="fp16"
)
model.to("cuda" if torch.cuda.is_available() else "cpu")
print("Model loaded! Ready to generate images.")

def image_to_base64(image):
    buffered = BytesIO()
    image.save(buffered, format="PNG")
    return base64.b64encode(buffered.getvalue()).decode('utf-8')

@socketio.on('generate_image')
def handle_generate_image(data):
    prompt = data.get('prompt', '')
    if not prompt:
        emit('error', {'message': 'No prompt provided'})
        return
    start_time = time.time()
    image = model(prompt=prompt, num_inference_steps=1).images[0]
    time_taken = time.time() - start_time
    image_base64 = image_to_base64(image)
    emit('image_generated', {'image_base64': image_base64, 'time_taken': f"{time_taken:.2f} seconds"})

if __name__ == '__main__':
    socketio.run(app, host='0.0.0.0', port=5000, debug=True)

from flask import Flask
from flask_socketio import SocketIO, emit
from diffusers import AutoPipelineForText2Image
import torch
from io import BytesIO
import base64
import time

app = Flask(__name__)
socketio = SocketIO(app)


print("Loading the SDXL Turbo model... This might take a moment.")
model = AutoPipelineForText2Image.from_pretrained(
    "stabilityai/sdxl-turbo", torch_dtype=torch.float16, variant="fp16"
)
model.to("cuda" if torch.cuda.is_available() else "cpu")
print("Model loaded! Ready to generate images.")

def image_to_base64(image):
    buffered = BytesIO()
    image.save(buffered, format="PNG")
    return base64.b64encode(buffered.getvalue()).decode('utf-8')

@socketio.on('generate_image')
def handle_generate_image(data):
    prompt = data.get('prompt', '')
    if not prompt:
        emit('error', {'message': 'No prompt provided'})
        return
    start_time = time.time()
    image = model(prompt=prompt, num_inference_steps=1).images[0]
    time_taken = time.time() - start_time
    image_base64 = image_to_base64(image)
    emit('image_generated', {'image_base64': image_base64, 'time_taken': f"{time_taken:.2f} seconds"})

if __name__ == '__main__':
    socketio.run(app, host='0.0.0.0', port=5000, debug=True)

Madiator2011 (Work)•4mo ago

you need to go to connect button and tcp maping and go to ip:port

suhailOP•4mo ago

thanks, found the ip and port but it doesn't connect via the ws.

wscat -c ws://141.193.30.26:40274

─
error: Unexpected server response: 400

wscat -c ws://141.193.30.26:40274

─
error: Unexpected server response: 400

and i don't see any error from the flask server btw, the app works fine with google cloud server, not sure what could be the issue with runpods gpu, or i might be missing something

Madiator2011 (Work)•4mo ago

websocket over tcp should work fine

Encyrption•4mo ago

I found for websocket when using the RunPod proxy HTTP port you have to construct your wss URL like this:

WS_URL = f'wss://{POD_ID}-{WS_PORT}.proxy.runpod.net/ws'

WS_URL = f'wss://{POD_ID}-{WS_PORT}.proxy.runpod.net/ws'

PLEASE note the /ws on the end. Without it this will not work. If you are using a TCP port then you will have to provide SSL and DNS for your worker to get the benefits of the underlying HTTPS required for wss.

Madiator2011 (Work)•4mo ago

@Encyrption hah I did not know about this one nice find

Encyrption•4mo ago

consider it my going away gift... LOL

Madiator2011•4mo ago

going away?

Encyrption•4mo ago

Yeah, it seems RunPod cannot support the application I have been building. I am building an AI marketplace where users can come an run many models. Seems with RunPod I can either have a small amount of fast responding endpoints or I can have a lot of slow responding endpoints. I don't see a path to success with those limitations. 😦

Madiator2011•4mo ago

Hmm how so? Fell free to send me some details

Encyrption•4mo ago

Sure, should I send via DM?

Madiator2011•4mo ago

Gaming

Programming

issue with websocket (wss) port on runpods