Function gsp_client_accept 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn gsp_client_accept(
    ch: i32,
    current_epoch: u64,
    pt_ptr: *const u8,
    pt_len: usize,
) -> *mut c_char

Accepts a GSP signal payload.

current_epoch is the receiver node’s current epoch — the client uses it to auto-reset its dedup state when the epoch advances.

Safety

pt_ptr MUST be valid for pt_len bytes.