How to do the dynamic local port forwarding

[zhengfish <zhengfish@xxxxxxxxx>]

Dose the libssh support dynamic port forwarding from the local to the
remote?
I find a api:
    int ssh_channel_open_forward(ssh_channel channel, const char
*remotehost, int remoteport, const char *sourcehost, int localport)
It can forward something from the local port to the remote port.
However it bind the local address plus port statically.

Then what function can do port forwarding dynamically?
If not, the following two functions can do that?

    int ssh_channel_write(ssh_channel channel, const void *data, uint32_t
len)
    int ssh_channel_read(ssh_channel channel, void *dest, uint32_t count,
int is_stderr)

Thx!

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