C++ (Cpp) lws_http2_get_network_wsi Examples

Example #1

File: http2.c Project: Fuhaiyu/mysocket

int lws_http2_frame_write(struct libwebsocket *wsi, int type, int flags, unsigned int sid, unsigned int len, unsigned char *buf)
{
	struct libwebsocket *wsi_eff = lws_http2_get_network_wsi(wsi);
	unsigned char *p = &buf[-LWS_HTTP2_FRAME_HEADER_LENGTH];
	int n;

	*p++ = len >> 16;
	*p++ = len >> 8;
	*p++ = len;
	*p++ = type;
	*p++ = flags;
	*p++ = sid >> 24;
	*p++ = sid >> 16;
	*p++ = sid >> 8;
	*p++ = sid;
	
	lwsl_info("%s: %p (eff %p). type %d, flags 0x%x, sid=%d, len=%d\n",
		  __func__, wsi, wsi_eff, type, flags, sid, len);

	n = lws_issue_raw(wsi_eff, &buf[-LWS_HTTP2_FRAME_HEADER_LENGTH], len + LWS_HTTP2_FRAME_HEADER_LENGTH);
	if (n >= LWS_HTTP2_FRAME_HEADER_LENGTH)
		return n - LWS_HTTP2_FRAME_HEADER_LENGTH;
	
	return n;
}

Example #2

File: http2.c Project: UIKit0/libwebsockets

int lws_http2_frame_write(struct libwebsocket *wsi, int type, int flags, unsigned int sid, unsigned int len, unsigned char *buf)
{
	struct libwebsocket *wsi_eff = lws_http2_get_network_wsi(wsi);
	unsigned char *p = &buf[-LWS_HTTP2_FRAME_HEADER_LENGTH];
	int n;

	*p++ = len >> 16;
	*p++ = len >> 8;
	*p++ = len;
	*p++ = type;
	*p++ = flags;
	*p++ = sid >> 24;
	*p++ = sid >> 16;
	*p++ = sid >> 8;
	*p++ = sid;
	
	lwsl_info("%s: %p (eff %p). type %d, flags 0x%x, sid=%d, len=%d\n",
		  __func__, wsi, wsi_eff, type, flags, sid, len, wsi->u.http2.tx_credit);
	
	if (type == LWS_HTTP2_FRAME_TYPE_DATA) {
		if (wsi->u.http2.tx_credit < len)
			lwsl_err("%s: %p: sending payload len %d but tx_credit only %d!\n", len, wsi->u.http2.tx_credit);
		wsi->u.http2.tx_credit -= len;
	}

	n = lws_issue_raw(wsi_eff, &buf[-LWS_HTTP2_FRAME_HEADER_LENGTH], len + LWS_HTTP2_FRAME_HEADER_LENGTH);
	if (n >= LWS_HTTP2_FRAME_HEADER_LENGTH)
		return n - LWS_HTTP2_FRAME_HEADER_LENGTH;
	
	return n;
}

Example #3

File: pollfd.c Project: hemengsi123/libwebsockets

LWS_VISIBLE int
libwebsocket_callback_on_writable(struct libwebsocket_context *context,
						      struct libwebsocket *wsi)
{
#ifdef LWS_USE_HTTP2
	struct libwebsocket *network_wsi, *wsi2;
	int already;

	lwsl_info("%s: %p\n", __func__, wsi);
	
	if (wsi->mode != LWS_CONNMODE_HTTP2_SERVING)
		goto network_sock;
	
	if (wsi->u.http2.requested_POLLOUT) {
		lwsl_info("already pending writable\n");
		return 1;
	}
	
	if (wsi->u.http2.tx_credit <= 0) {
		/*
		 * other side is not able to cope with us sending
		 * anything so no matter if we have POLLOUT on our side.
		 * 
		 * Delay waiting for our POLLOUT until peer indicates he has
		 * space for more using tx window command in http2 layer
		 */
		lwsl_info("%s: %p: waiting_tx_credit (%d)\n", __func__, wsi, wsi->u.http2.tx_credit);
		wsi->u.http2.waiting_tx_credit = 1;
		return 0;
	}
	
	network_wsi = lws_http2_get_network_wsi(wsi);
	already = network_wsi->u.http2.requested_POLLOUT;
	
	/* mark everybody above him as requesting pollout */
	
	wsi2 = wsi;
	while (wsi2) {
		wsi2->u.http2.requested_POLLOUT = 1;
		lwsl_info("mark %p pending writable\n", wsi2);
		wsi2 = wsi2->u.http2.parent_wsi;
	}
	
	/* for network action, act only on the network wsi */
	
	wsi = network_wsi;
	if (already)
		return 1;
network_sock:
#endif

	(void)context;
	if (lws_ext_callback_for_each_active(wsi,
				LWS_EXT_CALLBACK_REQUEST_ON_WRITEABLE, NULL, 0))
		return 1;

	if (wsi->position_in_fds_table < 0) {
		lwsl_err("%s: failed to find socket %d\n", __func__, wsi->sock);
		return -1;
	}

	if (lws_change_pollfd(wsi, 0, LWS_POLLOUT))
		return -1;

	lws_libev_io(context, wsi, LWS_EV_START | LWS_EV_WRITE);

	return 1;
}