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Something like peer-to-peer

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Old 11-19-2006
Something like peer-to-peer
Hey all !

I have a nice question ( maybe simple one ).
I coded a simple server , chat server. I want to implement send files options. But here I come to a nasty thing .. I cannot face out.

Let's say that two clients are already connected to the server.( clients are just from another contry each other , and the server , wherever in the world ).

Let's say I want to send a file from client 1 to client 2.Cool , what can I do , I can send the file to the network socket descriptor of client 1 -> to be sent to the server -> and then the server to receive it from its socket descriptor and sent to client 2. What a loose of speed , isen't it ?

I want to implement , something like peer-to-peer ( if its the corect idea to be mentioned ). I want something like :

Client 1 -> client 2. not : Client 1 -> Server -> Client 2 ( normaly some headers wil be passed to the server to client , to be known by client 1 where to send those data ).


What I really mean : Ehen client1 wants to send data to client 2 , those data to be send directly ( * ) to client 2.

(*) : client 1 says to server : Hey I wanna send a file to client 2 , give me its address to send to it that file ( peer to peer ).


Something like .. maybe I haven't explain really what I want , but .. if someone can give me a clue !


Thanks in advance ! Smilie
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LEARN ABOUT MINIX

ssl_get_peer_certificate

SSL_get_peer_certificate(3SSL)					      OpenSSL					    SSL_get_peer_certificate(3SSL)

NAME

       SSL_get_peer_certificate - get the X509 certificate of the peer

SYNOPSIS

	#include <openssl/ssl.h>

	X509 *SSL_get_peer_certificate(const SSL *ssl);

DESCRIPTION

       SSL_get_peer_certificate() returns a pointer to the X509 certificate the peer presented. If the peer did not present a certificate, NULL is
       returned.

NOTES

       Due to the protocol definition, a TLS/SSL server will always send a certificate, if present. A client will only send a certificate when
       explicitly requested to do so by the server (see SSL_CTX_set_verify(3)). If an anonymous cipher is used, no certificates are sent.

       That a certificate is returned does not indicate information about the verification state, use SSL_get_verify_result(3) to check the
       verification state.

       The reference count of the X509 object is incremented by one, so that it will not be destroyed when the session containing the peer
       certificate is freed. The X509 object must be explicitly freed using X509_free().

RETURN VALUES

       The following return values can occur:

       NULL
	   No certificate was presented by the peer or no connection was established.

       Pointer to an X509 certificate
	   The return value points to the certificate presented by the peer.

SEE ALSO

       ssl(3), SSL_get_verify_result(3), SSL_CTX_set_verify(3)

1.0.1e								    2013-02-11					    SSL_get_peer_certificate(3SSL)