send multiple headers python socket?

Question

So, say I create a TCP socket in python, and the server I am authorizing to needs multiple headers sent at once to authorize, how would I go about this? As I am going to use socket.sendall to send them, then wait for the authorization handshake reply. After that, I need it to just wait for a data reply until it gets one, how would I do this also, because doesn't it close the socket if data is not received in a set amount of time? Is there some easy way to send this correctly or what? ~~Edit~~ My main question i guess is how to send a multi line packet? :)

Could you be more specific? Maybe you could include which protocol you're using? There's no such thing as a "header" as the socket level, only incoming and outgoing data. Regarding whether a socket would close if no data is received, that's not the case, TCP sockets can remain open for a very long time. — Thomas Orozco
– Thomas Orozco, Commented Nov 1, 2012 at 21:46
well, see lets say the server im sending too needs a length and a message id header send, over the tcp socket, how would i send a multi line message ? — user1792652
– user1792652, Commented Nov 1, 2012 at 22:02
If you're speaking a line-oriented TCP protocol, just put line-breaks in the string you send: your_socket.send( "line 1\nline 2" ) — Russell Borogove
– Russell Borogove, Commented Nov 2, 2012 at 0:24

Protagonist · Accepted Answer · 2012-11-01 22:16:29Z

1

A python socket of the type SOCK_STREAM, using the socket.sendall(data) function simply sends a string. Yep, data is just a string. Now, you can construct your own headers and lines and everything and put it in a string and tell the socket to send it all off towards the server.

Then just do socket.recv(buffer) where buffer is an integer of the number of bytes. And as Thomas Orozco said, tcp sockets can remain open for a very long time, so make sure the server gives a fairly prompt reply.

edit: Btw, TCP is a transportaion layer protocol, you can read up a bit more here : http://en.wikipedia.org/wiki/Transport_layer . Simply put, TCP will transport whatever you tell it to transport. In python, it's strings.

answered Nov 1, 2012 at 22:16

Protagonist

5021 gold badge7 silver badges17 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

send multiple headers python socket?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related