Function replicationAbortSyncTransfer

app/redis-6.2.6/src/replication.c:2567–2577

Abort the async download of the bulk dataset while SYNC-ing with master. * Never call this function directly, use cancelReplicationHandshake() instead. */

 * Never call this function directly, use cancelReplicationHandshake() instead.
 */
void replicationAbortSyncTransfer(void) {
    serverAssert(server.repl_state == REPL_STATE_TRANSFER);
    undoConnectWithMaster();
    if (server.repl_transfer_fd!=-1) {
        close(server.repl_transfer_fd);
        bg_unlink(server.repl_transfer_tmpfile);
        zfree(server.repl_transfer_tmpfile);
        server.repl_transfer_tmpfile = NULL;
        server.repl_transfer_fd = -1;
    }
}

/* This function aborts a non blocking replication attempt if there is one
 * in progress, by canceling the non-blocking connect attempt or