vs_icap_send_chunk
if ((rv = vs_icap_send_chunk(ctx, send_len)) < 0)
if ((rv = vs_icap_send_chunk(ctx, send_len)) < 0)
if ((bytes_sent = vs_icap_send_chunk(ctx, preview_len)) < 0)
static int vs_icap_send_chunk(vs_scan_ctx_t *, int);