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Top Forums Programming NS3 with MQTT integration. HELP !!!! Post 302599386 by KishIsrael on Friday 17th of February 2012 02:42:42 AM
Old 02-17-2012
Data

Yes, as i was learning the basics of mqtt, i did try out the mosquitto clients, publisher and subscriber and they worked. SO I KNOW ITS MY CLIENT.

That's why I need help!! Why is it that when i carry over the same client source code and make a (somewhat) application out of it for an NS3 Node, it fails?

Why is it that the socket appears closed to the broker immediately after sending some data over?, which means the broker reads from the socket the first time. Btway, before the broker issues the socket-read-error, the socket passes the socket-write test (in the fd testing loop). Why does the socket-read fail? What happens to the frieking NS3 socket ? (4give my french. its frustrating!) Why does it appear closed ?

ps. I am using Debian 6 on a virtual box. I don't know if this is relevant but hey, anything to stop the pain Smilie
 

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BIO_s_socket(3) 						      OpenSSL							   BIO_s_socket(3)

NAME
BIO_s_socket, BIO_new_socket - socket BIO SYNOPSIS
#include <openssl/bio.h> BIO_METHOD *BIO_s_socket(void); long BIO_set_fd(BIO *b, int fd, long close_flag); long BIO_get_fd(BIO *b, int *c); BIO *BIO_new_socket(int sock, int close_flag); DESCRIPTION
BIO_s_socket() returns the socket BIO method. This is a wrapper round the platform's socket routines. BIO_read() and BIO_write() read or write the underlying socket. BIO_puts() is supported but BIO_gets() is not. If the close flag is set then the socket is shut down and closed when the BIO is freed. BIO_set_fd() sets the socket of BIO b to fd and the close flag to close_flag. BIO_get_fd() places the socket in c if it is not NULL, it also returns the socket. If c is not NULL it should be of type (int *). BIO_new_socket() returns a socket BIO using sock and close_flag. NOTES
Socket BIOs also support any relevant functionality of file descriptor BIOs. The reason for having separate file descriptor and socket BIOs is that on some platforms sockets are not file descriptors and use distinct I/O routines, Windows is one such platform. Any code mixing the two will not work on all platforms. BIO_set_fd() and BIO_get_fd() are macros. RETURN VALUES
BIO_s_socket() returns the socket BIO method. BIO_set_fd() always returns 1. BIO_get_fd() returns the socket or -1 if the BIO has not been initialized. BIO_new_socket() returns the newly allocated BIO or NULL is an error occurred. SEE ALSO
TBA 1.0.1e 2013-02-11 BIO_s_socket(3)
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