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Jose Tiago Macara Coutinho tiagocoutinho

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@tiagocoutinho
tiagocoutinho / webrtc.html
Created October 29, 2025 13:42
WebRTC browser, no signaling
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<title>WebRTC Demo</title>
<style>
textarea { width: 100%; height: 100px;}
.video-player { border: 2px solid greenyellow; background-color: gray; width: 100%; }
</style>
@tiagocoutinho
tiagocoutinho / webrtc.py
Created October 28, 2025 16:57
Example WebRTC http app
# pip install aiortc aiohttp opencv-python
import argparse
import asyncio
import logging
from aiohttp import web
from aiortc import RTCPeerConnection, RTCSessionDescription
from aiortc.contrib.media import MediaPlayer, MediaRelay
@tiagocoutinho
tiagocoutinho / yield.py
Created October 15, 2025 15:09
TCP client CLI with yield example in python
import socket
def make_stream(addr):
c = socket.create_connection(("0",5001))
print("Connected!")
reply = c
while True:
request = yield reply
if not request.strip():
break
@tiagocoutinho
tiagocoutinho / fastapi_htmx.py
Created June 11, 2025 08:18
HTMX + FastAPI
from functools import partial
from typing import Annotated
from fastapi import responses, FastAPI, Form
FormField = Annotated[str, Form()]
app = FastAPI()
get_html = partial(app.get, response_class=responses.HTMLResponse)
put_html = partial(app.put, response_class=responses.HTMLResponse)
@tiagocoutinho
tiagocoutinho / s2net.py
Last active May 7, 2025 13:29
Python serial to tcp
"""
tsb.py -- A telnet <-> serial port bridge
Copyright (C) 2005 Eli Fulkerson
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
@tiagocoutinho
tiagocoutinho / zero.py
Last active October 30, 2024 09:32
Python thread pitfall
# I dare you to find an execution that prints out 0
# (at least using the CPython implementation)
from threading import Thread
C, N = 0, 1_000_000
def f(inc=1):
global C, N
for i in range(N):
C += inc
@tiagocoutinho
tiagocoutinho / client.py
Last active September 25, 2024 08:06
read temp periodically
import time
import socket
def temp_stream():
with socket.create_connection(("localhost", 10_123)) as sock:
sockfd = sock.makefile("rwb", buffering=1)
while True:
sockfd.write(b"TEMP?\n")
payload = sockfd.readline()
yield float(payload)
@tiagocoutinho
tiagocoutinho / echo_server_single_client.py
Last active August 29, 2024 14:43
python single client echo server accept
import socket
import select
serv = socket.create_server(("", 10_010))
readers = {serv}
while True:
ready, _, _ = select.select(readers, (), ())
if serv in ready:
client, addr = serv.accept()
@tiagocoutinho
tiagocoutinho / random_name.py
Last active April 5, 2024 04:45
Generate random name in python
import random
import string
ascii_alphanumeric = string.ascii_letters + string.digits
def random_name(min_length=32, max_length=32):
if not (k := random.randint(min_length, max_length)):
return ""
first = random.choice(string.ascii_letters)
return first + "".join(random.choices(ascii_alphanumeric, k=k-1))
@tiagocoutinho
tiagocoutinho / README.md
Last active December 19, 2023 07:57
Virtual serial line (RS232) on linux with socat and pyserial

Virtual serial line

Virtual serial line on linux with socat, python server & client

Run on terminal 1:

socat -d -d pty,raw,echo=0,link=/tmp/cryocon_simulator pty,raw,echo=0,link=/tmp/cryocon

Run on terminal 2: