.TH libssh2_trace_sethandler 3 "15 Jan 2010" "libssh2" "libssh2"
.SH NAME
libssh2_trace_sethandler - set a trace output handler
.SH SYNOPSIS
.nf
#include <libssh2.h>

typedef void (*libssh2_trace_handler_func)(LIBSSH2_SESSION *session,
                                           void *context,
                                           const char *data,
                                           size_t length);

int
libssh2_trace_sethandler(LIBSSH2_SESSION *session,
                         void *context,
                         libssh2_trace_handler_func callback);
.fi
.SH DESCRIPTION
libssh2_trace_sethandler installs a trace output handler for your application.
By default, when tracing has been switched on via a call to libssh2_trace(),
all output is written to stderr.  By calling this method and passing a
function pointer that matches the libssh2_trace_handler_func prototype,
libssh2 will call back as it generates trace output.  This can be used to
capture the trace output and put it into a log file or diagnostic window.
This function has no effect unless libssh2 was built to support this option,
and a typical "release build" might not.

\fBcontext\fP can be used to pass arbitrary user defined data back into the callback when invoked.
.SH AVAILABILITY
Added in libssh2 version 1.2.3