How should I handle socket receiving?

[MRAB]

On 14/03/2011 19:47, Hans wrote:
> On Mar 12, 10:13 pm, Tim Roberts<t... at probo.com>  wrote:
>> Hans<hans... at gmail.com>  wrote:
>>
>>> I'm thinking to write a code which to:
>>> 1. establish tons of udp/tcp connections to a server
>>
>> What does "tons" mean?  Tens?  Hundreds?
>>
>>> my question is how should I handle receiving traffic from each
>>> connection respectively?
>>
>> You're really going to want to use "select".  You can store the objects in
>> a dictionary where the key is the socket number.  That way, you can use the
>> result of the select and get your network object directly.
>> --
>> Tim Roberts, t... at probo.com
>> Providenza&  Boekelheide, Inc.
>
> I wrote code like this:
> main proc:
> import socket_thread
> #start 1000 connection
> while i<1000:
>      my_socket=socket_thread.socket_thread(i,host,port)
>      my_socket.send(some_data)
>      my_socket.recv()
>
This won't run as-is because you never assign to "i".

> socket_thread.py
> class socket_thread:
>      def __init__:
>            self.soc_handle=socket.socket(socket.IF_INET,socket.DGRAM)
>      def send(data):
>            self.soc_handle.send(data)
>      def recv():
>            while 1:
>
> input_list,output_list,exec_list=select.select([self.soc_handle],[],[],
> 2)
>                data=input_list[0].recv(2048)
>                print data
>
> But it does not work as I hope. main proc can only initiate one thread
> and then trapped by it, cannot get out.
> I'm sure I missed something but I don't know. Thanks for any help.

Your "socket_thread" class is just a normal class. You create an
instance, use it to send data, and then call its "recv" method, which
loops forever.