async def send_dict(writer, dicc):
"""
Envia un diccionario como JSON.
:param writer: Stream de salida
:param dicc: Un diccionario
"""
buffer = '{'
separator = ""
for key, value in dicc.items():
buffer += '{}"{}": {}'.format(separator, key, value)
separator = ",\r\n"
buffer += '}'
uasyncio.run(send_chunk(writer, buffer))
uasyncio.run(send_chunk(writer, ""))