[Python-es] UDPSock.recvfrom(buf) ??????? (buf) ???

[Diego Uribe Gamez]

Pero nada, no se como usarlo.

2012/6/7 Diego Uribe Gamez <diego.uribe.gamez en gmail.com>

> Que determina el tamaño del paquete, si yo envió un dato de un computador
> a otro que tanto se abre buff para recibir el tirón completo.
>
> Sobre la información de la documentación solo encontré esto buffer
> allocation on receive operations is automatic, and buffer length is
> implicit on send operations. y el ejemplo con buffer para mi caso al
> final del documento:
>
> *# receive a packageprint s.recvfrom(65565)*
>
> import socket
> # the public network interfaceHOST = socket.gethostbyname(socket.gethostname())
> # create a raw socket and bind it to the public interfaces = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_IP)s.bind((HOST, 0))
> # Include IP headerss.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
> # receive all packagess.ioctl(socket.SIO_RCVALL, socket.RCVALL_ON)
> *# receive a packageprint s.recvfrom(65565)*
> # disabled promiscuous modes.ioctl(socket.SIO_RCVALL, socket.RCVALL_OFF)
>
> Running an example several times with too small delay between executions,
> could lead to this error:
>
>
> socket.error: [Errno 98] Address already in use
>
> This is because the previous execution has left the socket in a TIME_WAIT state,
> and can’t be immediately reused.
>
> There is a socket<http://docs.python.org/library/socket.html#module-socket> flag
> to set, in order to prevent this, socket.SO_REUSEADDR:
>
> s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)s.bind((HOST, PORT))
>
> the SO_REUSEADDR flag tells the kernel to reuse a local socket in
> TIME_WAIT state, without waiting for its natural timeout to expire.
>
> El 7 de junio de 2012 08:45, mauricio rodriguez <
> rodriguez.mauricio55 en gmail.com> escribió:
>
> es la cantidad de datos que recibe o envía de un tirón ... no la totalidad
>> del trafico sino el tamaño del paquete
>>
>> 2012/6/7 Diego Uribe Gamez <diego.uribe.gamez en gmail.com>
>>
>>> Estoy mirando una conexión por Soket y no logro entender que hace el
>>> buf? que es lo que cambia? el numero que se le asigna es que?
>>>
>>> host = "localhost"
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> port = 21567
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> buf = 1024
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> data = ''
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> addr = (host, port)
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> UDPSock = socket(AF_INET, SOCK_DGRAM)
>>>
>>>
>>> while (1):
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>   data, addr = UDPSock.recvfrom(buf)
>>>
>>>
>>> --
>>>  *Diego Alonso Uribe Gamez*
>>> ------------------------------
>>>
>>> *Desarrollador web*
>>>
>>> Twitter: @DiegoUG <http://www.twitter.com/DiegoUG>
>>>
>>> Google+: http://gplus.to/diegoug
>>> ------------------------------
>>>
>>>
>>>
>>> _______________________________________________
>>> Python-es mailing list
>>> Python-es en python.org
>>> http://mail.python.org/mailman/listinfo/python-es
>>> FAQ: http://python-es-faq.wikidot.com/
>>>
>>>
>>
>> _______________________________________________
>> Python-es mailing list
>> Python-es en python.org
>> http://mail.python.org/mailman/listinfo/python-es
>> FAQ: http://python-es-faq.wikidot.com/
>>
>>
>
>
> --
>  *Diego Alonso Uribe Gamez*
> ------------------------------
>
> *Desarrollador web*
>
> Twitter: @DiegoUG <http://www.twitter.com/DiegoUG>
>
> Google+: http://gplus.to/diegoug
> ------------------------------
>
>
>


-- 
 *Diego Alonso Uribe Gamez*
------------------------------

*Desarrollador web*

Twitter: @DiegoUG <http://www.twitter.com/DiegoUG>

Google+: http://gplus.to/diegoug
------------------------------
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://mail.python.org/pipermail/python-es/attachments/20120607/f0bd18ff/attachment.html>