Thirdparty: Fill copyright for lws, miniupnpc, clipper

Rename `lws` to `libwebsockets` which is its library name.

Add missing license file for mbedtls.

1 files changed, 0 insertions, 883 deletions

diff --git a/thirdparty/lws/output.c b/thirdparty/lws/output.c
deleted file mode 100644
index 375ff3ef99..0000000000
--- a/thirdparty/lws/output.c
+++ /dev/null
@@ -1,883 +0,0 @@
-/*
- * libwebsockets - small server side websockets and web server implementation
- *
- * Copyright (C) 2010-2017 Andy Green <andy@warmcat.com>
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License as published by the Free Software Foundation:
- *  version 2.1 of the License.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- *  MA  02110-1301  USA
- */
-
-#include "private-libwebsockets.h"
-
-static int
-lws_0405_frame_mask_generate(struct lws *wsi)
-{
-#if 0
-	wsi->u.ws.mask[0] = 0;
-	wsi->u.ws.mask[1] = 0;
-	wsi->u.ws.mask[2] = 0;
-	wsi->u.ws.mask[3] = 0;
-#else
-	int n;
-	/* fetch the per-frame nonce */
-
-	n = lws_get_random(lws_get_context(wsi), wsi->u.ws.mask, 4);
-	if (n != 4) {
-		lwsl_parser("Unable to read from random device %s %d\n",
-			    SYSTEM_RANDOM_FILEPATH, n);
-		return 1;
-	}
-#endif
-	/* start masking from first byte of masking key buffer */
-	wsi->u.ws.mask_idx = 0;
-
-	return 0;
-}
-
-/*
- * notice this returns number of bytes consumed, or -1
- */
-int lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len)
-{
-	struct lws_context *context = lws_get_context(wsi);
-	struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
-	size_t real_len = len;
-	unsigned int n;
-	int m;
-
-	lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_WRITE, 1);
-
-	if (!len)
-		return 0;
-	/* just ignore sends after we cleared the truncation buffer */
-	if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE &&
-	    !wsi->trunc_len)
-		return len;
-
-	if (wsi->trunc_len && (buf < wsi->trunc_alloc ||
-	    buf > (wsi->trunc_alloc + wsi->trunc_len + wsi->trunc_offset))) {
-		char dump[20];
-		strncpy(dump, (char *)buf, sizeof(dump) - 1);
-		dump[sizeof(dump) - 1] = '\0';
-#if defined(LWS_WITH_ESP8266)
-		lwsl_err("****** %p: Sending new %lu (%s), pending truncated ...\n",
-			 wsi, (unsigned long)len, dump);
-#else
-		lwsl_err("****** %p: Sending new %lu (%s), pending truncated ...\n"
-			 "       It's illegal to do an lws_write outside of\n"
-			 "       the writable callback: fix your code\n",
-			 wsi, (unsigned long)len, dump);
-#endif
-		assert(0);
-
-		return -1;
-	}
-
-	m = lws_ext_cb_active(wsi, LWS_EXT_CB_PACKET_TX_DO_SEND, &buf, len);
-	if (m < 0)
-		return -1;
-	if (m) /* handled */ {
-		n = m;
-		goto handle_truncated_send;
-	}
-
-	if (!wsi->http2_substream && !lws_socket_is_valid(wsi->desc.sockfd))
-		lwsl_warn("** error invalid sock but expected to send\n");
-
-	/* limit sending */
-	if (wsi->protocol->tx_packet_size)
-		n = wsi->protocol->tx_packet_size;
-	else {
-		n = wsi->protocol->rx_buffer_size;
-		if (!n)
-			n = context->pt_serv_buf_size;
-	}
-	n += LWS_PRE + 4;
-	if (n > len)
-		n = len;
-#if defined(LWS_WITH_ESP8266)	
-	if (wsi->pending_send_completion) {
-		n = 0;
-		goto handle_truncated_send;
-	}
-#endif
-
-	/* nope, send it on the socket directly */
-	lws_latency_pre(context, wsi);
-	n = lws_ssl_capable_write(wsi, buf, n);
-	lws_latency(context, wsi, "send lws_issue_raw", n, n == len);
-
-	switch (n) {
-	case LWS_SSL_CAPABLE_ERROR:
-		/* we're going to close, let close know sends aren't possible */
-		wsi->socket_is_permanently_unusable = 1;
-		return -1;
-	case LWS_SSL_CAPABLE_MORE_SERVICE:
-		/* nothing got sent, not fatal, retry the whole thing later */
-		n = 0;
-		break;
-	}
-
-handle_truncated_send:
-	/*
-	 * we were already handling a truncated send?
-	 */
-	if (wsi->trunc_len) {
-		lwsl_info("%p partial adv %d (vs %ld)\n", wsi, n, (long)real_len);
-		wsi->trunc_offset += n;
-		wsi->trunc_len -= n;
-
-		if (!wsi->trunc_len) {
-			lwsl_info("***** %p partial send completed\n", wsi);
-			/* done with it, but don't free it */
-			n = real_len;
-			if (wsi->state == LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE) {
-				lwsl_info("***** %p signalling to close now\n", wsi);
-				return -1; /* retry closing now */
-			}
-		}
-		/* always callback on writeable */
-		lws_callback_on_writable(wsi);
-
-		return n;
-	}
-
-	if ((unsigned int)n == real_len)
-		/* what we just sent went out cleanly */
-		return n;
-
-	/*
-	 * Newly truncated send.  Buffer the remainder (it will get
-	 * first priority next time the socket is writable)
-	 */
-	lwsl_debug("%p new partial sent %d from %lu total\n", wsi, n,
-		    (unsigned long)real_len);
-
-	lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_WRITE_PARTIALS, 1);
-	lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_B_PARTIALS_ACCEPTED_PARTS, n);
-
-	/*
-	 *  - if we still have a suitable malloc lying around, use it
-	 *  - or, if too small, reallocate it
-	 *  - or, if no buffer, create it
-	 */
-	if (!wsi->trunc_alloc || real_len - n > wsi->trunc_alloc_len) {
-		lws_free(wsi->trunc_alloc);
-
-		wsi->trunc_alloc_len = real_len - n;
-		wsi->trunc_alloc = lws_malloc(real_len - n, "truncated send alloc");
-		if (!wsi->trunc_alloc) {
-			lwsl_err("truncated send: unable to malloc %lu\n",
-				 (unsigned long)(real_len - n));
-			return -1;
-		}
-	}
-	wsi->trunc_offset = 0;
-	wsi->trunc_len = real_len - n;
-	memcpy(wsi->trunc_alloc, buf + n, real_len - n);
-
-	/* since something buffered, force it to get another chance to send */
-	lws_callback_on_writable(wsi);
-
-	return real_len;
-}
-
-LWS_VISIBLE int lws_write(struct lws *wsi, unsigned char *buf, size_t len,
-			  enum lws_write_protocol wp)
-{
-	struct lws_context_per_thread *pt = &wsi->context->pt[(int)wsi->tsi];
-	int masked7 = (wsi->mode == LWSCM_WS_CLIENT);
-	unsigned char is_masked_bit = 0;
-	unsigned char *dropmask = NULL;
-	struct lws_tokens eff_buf;
-	size_t orig_len = len;
-	int pre = 0, n;
-
-	if (wsi->parent_carries_io) {
-		struct lws_write_passthru pas;
-
-		pas.buf = buf;
-		pas.len = len;
-		pas.wp = wp;
-		pas.wsi = wsi;
-
-		if (wsi->parent->protocol->callback(wsi->parent,
-				LWS_CALLBACK_CHILD_WRITE_VIA_PARENT,
-				wsi->parent->user_space,
-				(void *)&pas, 0))
-			return 1;
-
-		return len;
-	}
-
-	lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_C_API_LWS_WRITE, 1);
-
-	if ((int)len < 0) {
-		lwsl_err("%s: suspicious len int %d, ulong %lu\n", __func__,
-				(int)len, (unsigned long)len);
-		return -1;
-	}
-
-	lws_stats_atomic_bump(wsi->context, pt, LWSSTATS_B_WRITE, len);
-
-#ifdef LWS_WITH_ACCESS_LOG
-	wsi->access_log.sent += len;
-#endif
-	if (wsi->vhost)
-		wsi->vhost->conn_stats.tx += len;
-
-	if (wsi->state == LWSS_ESTABLISHED && wsi->u.ws.tx_draining_ext) {
-		/* remove us from the list */
-		struct lws **w = &pt->tx_draining_ext_list;
-
-		wsi->u.ws.tx_draining_ext = 0;
-		/* remove us from context draining ext list */
-		while (*w) {
-			if (*w == wsi) {
-				*w = wsi->u.ws.tx_draining_ext_list;
-				break;
-			}
-			w = &((*w)->u.ws.tx_draining_ext_list);
-		}
-		wsi->u.ws.tx_draining_ext_list = NULL;
-		wp = (wsi->u.ws.tx_draining_stashed_wp & 0xc0) |
-				LWS_WRITE_CONTINUATION;
-
-		lwsl_ext("FORCED draining wp to 0x%02X\n", wp);
-	}
-
-	lws_restart_ws_ping_pong_timer(wsi);
-
-	if ((wp & 0x1f) == LWS_WRITE_HTTP ||
-	    (wp & 0x1f) == LWS_WRITE_HTTP_FINAL ||
-	    (wp & 0x1f) == LWS_WRITE_HTTP_HEADERS_CONTINUATION ||
-	    (wp & 0x1f) == LWS_WRITE_HTTP_HEADERS)
-		goto send_raw;
-
-	/* if not in a state to send stuff, then just send nothing */
-
-	if (wsi->state != LWSS_ESTABLISHED &&
-	    ((wsi->state != LWSS_RETURNED_CLOSE_ALREADY &&
-	      wsi->state != LWSS_WAITING_TO_SEND_CLOSE_NOTIFICATION &&
-	      wsi->state != LWSS_AWAITING_CLOSE_ACK) ||
-			    wp != LWS_WRITE_CLOSE)) {
-		lwsl_debug("binning\n");
-		return 0;
-	}
-
-	/* if we are continuing a frame that already had its header done */
-
-	if (wsi->u.ws.inside_frame) {
-		lwsl_debug("INSIDE FRAME\n");
-		goto do_more_inside_frame;
-	}
-
-	wsi->u.ws.clean_buffer = 1;
-
-	/*
-	 * give a chance to the extensions to modify payload
-	 * the extension may decide to produce unlimited payload erratically
-	 * (eg, compression extension), so we require only that if he produces
-	 * something, it will be a complete fragment of the length known at
-	 * the time (just the fragment length known), and if he has
-	 * more we will come back next time he is writeable and allow him to
-	 * produce more fragments until he's drained.
-	 *
-	 * This allows what is sent each time it is writeable to be limited to
-	 * a size that can be sent without partial sends or blocking, allows
-	 * interleaving of control frames and other connection service.
-	 */
-	eff_buf.token = (char *)buf;
-	eff_buf.token_len = len;
-
-	switch ((int)wp) {
-	case LWS_WRITE_PING:
-	case LWS_WRITE_PONG:
-	case LWS_WRITE_CLOSE:
-		break;
-	default:
-		lwsl_debug("LWS_EXT_CB_PAYLOAD_TX\n");
-		n = lws_ext_cb_active(wsi, LWS_EXT_CB_PAYLOAD_TX, &eff_buf, wp);
-		if (n < 0)
-			return -1;
-
-		if (n && eff_buf.token_len) {
-			lwsl_debug("drain len %d\n", (int)eff_buf.token_len);
-			/* extension requires further draining */
-			wsi->u.ws.tx_draining_ext = 1;
-			wsi->u.ws.tx_draining_ext_list = pt->tx_draining_ext_list;
-			pt->tx_draining_ext_list = wsi;
-			/* we must come back to do more */
-			lws_callback_on_writable(wsi);
-			/*
-			 * keep a copy of the write type for the overall
-			 * action that has provoked generation of these
-			 * fragments, so the last guy can use its FIN state.
-			 */
-			wsi->u.ws.tx_draining_stashed_wp = wp;
-			/* this is definitely not actually the last fragment
-			 * because the extension asserted he has more coming
-			 * So make sure this intermediate one doesn't go out
-			 * with a FIN.
-			 */
-			wp |= LWS_WRITE_NO_FIN;
-		}
-
-		if (eff_buf.token_len && wsi->u.ws.stashed_write_pending) {
-			wsi->u.ws.stashed_write_pending = 0;
-			wp = (wp &0xc0) | (int)wsi->u.ws.stashed_write_type;
-		}
-	}
-
-	/*
-	 * an extension did something we need to keep... for example, if
-	 * compression extension, it has already updated its state according
-	 * to this being issued
-	 */
-	if ((char *)buf != eff_buf.token) {
-		/*
-		 * ext might eat it, but not have anything to issue yet.
-		 * In that case we have to follow his lead, but stash and
-		 * replace the write type that was lost here the first time.
-		 */
-		if (len && !eff_buf.token_len) {
-			if (!wsi->u.ws.stashed_write_pending)
-				wsi->u.ws.stashed_write_type = (char)wp & 0x3f;
-			wsi->u.ws.stashed_write_pending = 1;
-			return len;
-		}
-		/*
-		 * extension recreated it:
-		 * need to buffer this if not all sent
-		 */
-		wsi->u.ws.clean_buffer = 0;
-	}
-
-	buf = (unsigned char *)eff_buf.token;
-	len = eff_buf.token_len;
-
-	if (!buf) {
-		lwsl_err("null buf (%d)\n", (int)len);
-		return -1;
-	}
-
-	switch (wsi->ietf_spec_revision) {
-	case 13:
-		if (masked7) {
-			pre += 4;
-			dropmask = &buf[0 - pre];
-			is_masked_bit = 0x80;
-		}
-
-		switch (wp & 0xf) {
-		case LWS_WRITE_TEXT:
-			n = LWSWSOPC_TEXT_FRAME;
-			break;
-		case LWS_WRITE_BINARY:
-			n = LWSWSOPC_BINARY_FRAME;
-			break;
-		case LWS_WRITE_CONTINUATION:
-			n = LWSWSOPC_CONTINUATION;
-			break;
-
-		case LWS_WRITE_CLOSE:
-			n = LWSWSOPC_CLOSE;
-			break;
-		case LWS_WRITE_PING:
-			n = LWSWSOPC_PING;
-			break;
-		case LWS_WRITE_PONG:
-			n = LWSWSOPC_PONG;
-			break;
-		default:
-			lwsl_warn("lws_write: unknown write opc / wp\n");
-			return -1;
-		}
-
-		if (!(wp & LWS_WRITE_NO_FIN))
-			n |= 1 << 7;
-
-		if (len < 126) {
-			pre += 2;
-			buf[-pre] = n;
-			buf[-pre + 1] = (unsigned char)(len | is_masked_bit);
-		} else {
-			if (len < 65536) {
-				pre += 4;
-				buf[-pre] = n;
-				buf[-pre + 1] = 126 | is_masked_bit;
-				buf[-pre + 2] = (unsigned char)(len >> 8);
-				buf[-pre + 3] = (unsigned char)len;
-			} else {
-				pre += 10;
-				buf[-pre] = n;
-				buf[-pre + 1] = 127 | is_masked_bit;
-#if defined __LP64__
-					buf[-pre + 2] = (len >> 56) & 0x7f;
-					buf[-pre + 3] = len >> 48;
-					buf[-pre + 4] = len >> 40;
-					buf[-pre + 5] = len >> 32;
-#else
-					buf[-pre + 2] = 0;
-					buf[-pre + 3] = 0;
-					buf[-pre + 4] = 0;
-					buf[-pre + 5] = 0;
-#endif
-				buf[-pre + 6] = (unsigned char)(len >> 24);
-				buf[-pre + 7] = (unsigned char)(len >> 16);
-				buf[-pre + 8] = (unsigned char)(len >> 8);
-				buf[-pre + 9] = (unsigned char)len;
-			}
-		}
-		break;
-	}
-
-do_more_inside_frame:
-
-	/*
-	 * Deal with masking if we are in client -> server direction and
-	 * the wp demands it
-	 */
-
-	if (masked7) {
-		if (!wsi->u.ws.inside_frame)
-			if (lws_0405_frame_mask_generate(wsi)) {
-				lwsl_err("frame mask generation failed\n");
-				return -1;
-			}
-
-		/*
-		 * in v7, just mask the payload
-		 */
-		if (dropmask) { /* never set if already inside frame */
-			for (n = 4; n < (int)len + 4; n++)
-				dropmask[n] = dropmask[n] ^ wsi->u.ws.mask[
-					(wsi->u.ws.mask_idx++) & 3];
-
-			/* copy the frame nonce into place */
-			memcpy(dropmask, wsi->u.ws.mask, 4);
-		}
-	}
-
-send_raw:
-	switch ((int)(wp & 0x1f)) {
-	case LWS_WRITE_CLOSE:
-/*		lwsl_hexdump(&buf[-pre], len); */
-	case LWS_WRITE_HTTP:
-	case LWS_WRITE_HTTP_FINAL:
-	case LWS_WRITE_HTTP_HEADERS:
-	case LWS_WRITE_HTTP_HEADERS_CONTINUATION:
-	case LWS_WRITE_PONG:
-	case LWS_WRITE_PING:
-#ifdef LWS_WITH_HTTP2
-		if (wsi->mode == LWSCM_HTTP2_SERVING) {
-			unsigned char flags = 0;
-
-			n = LWS_H2_FRAME_TYPE_DATA;
-			if ((wp & 0x1f) == LWS_WRITE_HTTP_HEADERS) {
-				n = LWS_H2_FRAME_TYPE_HEADERS;
-				if (!(wp & LWS_WRITE_NO_FIN))
-					flags = LWS_H2_FLAG_END_HEADERS;
-				if (wsi->u.h2.send_END_STREAM || (wp & LWS_WRITE_H2_STREAM_END)) {
-					flags |= LWS_H2_FLAG_END_STREAM;
-					wsi->u.h2.send_END_STREAM = 1;
-				}
-			}
-
-			if ((wp & 0x1f) == LWS_WRITE_HTTP_HEADERS_CONTINUATION) {
-				n = LWS_H2_FRAME_TYPE_CONTINUATION;
-				if (!(wp & LWS_WRITE_NO_FIN))
-					flags = LWS_H2_FLAG_END_HEADERS;
-				if (wsi->u.h2.send_END_STREAM || (wp & LWS_WRITE_H2_STREAM_END)) {
-					flags |= LWS_H2_FLAG_END_STREAM;
-					wsi->u.h2.send_END_STREAM = 1;
-				}
-			}
-
-			if (((wp & 0x1f) == LWS_WRITE_HTTP ||
-			     (wp & 0x1f) == LWS_WRITE_HTTP_FINAL) &&
-			    wsi->u.http.tx_content_length) {
-				wsi->u.http.tx_content_remain -= len;
-				lwsl_info("%s: wsi %p: tx_content_remain = %llu\n", __func__, wsi,
-					  (unsigned long long)wsi->u.http.tx_content_remain);
-				if (!wsi->u.http.tx_content_remain) {
-					lwsl_info("%s: selecting final write mode\n", __func__);
-					wp = LWS_WRITE_HTTP_FINAL;
-				}
-			}
-
-			if ((wp & 0x1f) == LWS_WRITE_HTTP_FINAL || (wp & LWS_WRITE_H2_STREAM_END)) {
-			    //lws_get_network_wsi(wsi)->u.h2.END_STREAM) {
-				lwsl_info("%s: setting END_STREAM\n", __func__);
-				flags |= LWS_H2_FLAG_END_STREAM;
-				wsi->u.h2.send_END_STREAM = 1;
-			}
-
-			return lws_h2_frame_write(wsi, n, flags,
-					wsi->u.h2.my_sid, len, buf);
-		}
-#endif
-		return lws_issue_raw(wsi, (unsigned char *)buf - pre, len + pre);
-	default:
-		break;
-	}
-
-	/*
-	 * give any active extensions a chance to munge the buffer
-	 * before send.  We pass in a pointer to an lws_tokens struct
-	 * prepared with the default buffer and content length that's in
-	 * there.  Rather than rewrite the default buffer, extensions
-	 * that expect to grow the buffer can adapt .token to
-	 * point to their own per-connection buffer in the extension
-	 * user allocation.  By default with no extensions or no
-	 * extension callback handling, just the normal input buffer is
-	 * used then so it is efficient.
-	 *
-	 * callback returns 1 in case it wants to spill more buffers
-	 *
-	 * This takes care of holding the buffer if send is incomplete, ie,
-	 * if wsi->u.ws.clean_buffer is 0 (meaning an extension meddled with
-	 * the buffer).  If wsi->u.ws.clean_buffer is 1, it will instead
-	 * return to the user code how much OF THE USER BUFFER was consumed.
-	 */
-
-	n = lws_issue_raw_ext_access(wsi, buf - pre, len + pre);
-	wsi->u.ws.inside_frame = 1;
-	if (n <= 0)
-		return n;
-
-	if (n == (int)len + pre) {
-		/* everything in the buffer was handled (or rebuffered...) */
-		wsi->u.ws.inside_frame = 0;
-		return orig_len;
-	}
-
-	/*
-	 * it is how many bytes of user buffer got sent... may be < orig_len
-	 * in which case callback when writable has already been arranged
-	 * and user code can call lws_write() again with the rest
-	 * later.
-	 */
-
-	return n - pre;
-}
-
-LWS_VISIBLE int lws_serve_http_file_fragment(struct lws *wsi)
-{
-	struct lws_context *context = wsi->context;
-	struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
-	struct lws_process_html_args args;
-	lws_filepos_t amount, poss;
-	unsigned char *p, *pstart;
-#if defined(LWS_WITH_RANGES)
-	unsigned char finished = 0;
-#endif
-	int n, m;
-
-	lwsl_debug("wsi->http2_substream %d\n", wsi->http2_substream);
-
-	while (!lws_send_pipe_choked(wsi)) {
-
-		if (wsi->trunc_len) {
-			if (lws_issue_raw(wsi, wsi->trunc_alloc +
-					  wsi->trunc_offset,
-					  wsi->trunc_len) < 0) {
-				lwsl_info("%s: closing\n", __func__);
-				goto file_had_it;
-			}
-			continue;
-		}
-
-		if (wsi->u.http.filepos == wsi->u.http.filelen)
-			goto all_sent;
-
-		n = 0;
-
-		pstart = pt->serv_buf + LWS_H2_FRAME_HEADER_LENGTH;
-
-		p = pstart;
-
-#if defined(LWS_WITH_RANGES)
-		if (wsi->u.http.range.count_ranges && !wsi->u.http.range.inside) {
-
-			lwsl_notice("%s: doing range start %llu\n", __func__, wsi->u.http.range.start);
-
-			if ((long long)lws_vfs_file_seek_cur(wsi->u.http.fop_fd,
-						   wsi->u.http.range.start -
-						   wsi->u.http.filepos) < 0)
-				goto file_had_it;
-
-			wsi->u.http.filepos = wsi->u.http.range.start;
-
-			if (wsi->u.http.range.count_ranges > 1) {
-				n =  lws_snprintf((char *)p, context->pt_serv_buf_size - LWS_H2_FRAME_HEADER_LENGTH,
-					"_lws\x0d\x0a"
-					"Content-Type: %s\x0d\x0a"
-					"Content-Range: bytes %llu-%llu/%llu\x0d\x0a"
-					"\x0d\x0a",
-					wsi->u.http.multipart_content_type,
-					wsi->u.http.range.start,
-					wsi->u.http.range.end,
-					wsi->u.http.range.extent);
-				p += n;
-			}
-
-			wsi->u.http.range.budget = wsi->u.http.range.end -
-						   wsi->u.http.range.start + 1;
-			wsi->u.http.range.inside = 1;
-		}
-#endif
-
-		poss = context->pt_serv_buf_size - n - LWS_H2_FRAME_HEADER_LENGTH;
-
-		if (poss > wsi->u.http.tx_content_remain)
-			poss = wsi->u.http.tx_content_remain;
-
-		/*
-		 * if there is a hint about how much we will do well to send at one time,
-		 * restrict ourselves to only trying to send that.
-		 */
-		if (wsi->protocol->tx_packet_size &&
-		    poss > wsi->protocol->tx_packet_size)
-			poss = wsi->protocol->tx_packet_size;
-
-#if defined(LWS_WITH_HTTP2)
-		m = lws_h2_tx_cr_get(wsi);
-		if (!m) {
-			lwsl_info("%s: came here with no tx credit", __func__);
-			return 0;
-		}
-		if (m < poss)
-			poss = m;
-		/*
-		 * consumption of the actual payload amount sent will be handled
-		 * when the http2 data frame is sent
-		 */
-#endif
-
-#if defined(LWS_WITH_RANGES)
-		if (wsi->u.http.range.count_ranges) {
-			if (wsi->u.http.range.count_ranges > 1)
-				poss -= 7; /* allow for final boundary */
-			if (poss > wsi->u.http.range.budget)
-				poss = wsi->u.http.range.budget;
-		}
-#endif
-		if (wsi->sending_chunked) {
-			/* we need to drop the chunk size in here */
-			p += 10;
-			/* allow for the chunk to grow by 128 in translation */
-			poss -= 10 + 128;
-		}
-
-		if (lws_vfs_file_read(wsi->u.http.fop_fd, &amount, p, poss) < 0)
-			goto file_had_it; /* caller will close */
-
-		if (wsi->sending_chunked)
-			n = (int)amount;
-		else
-			n = (p - pstart) + (int)amount;
-
-		lwsl_debug("%s: sending %d\n", __func__, n);
-
-		if (n) {
-			lws_set_timeout(wsi, PENDING_TIMEOUT_HTTP_CONTENT,
-					context->timeout_secs);
-
-			if (wsi->sending_chunked) {
-				args.p = (char *)p;
-				args.len = n;
-				args.max_len = (unsigned int)poss + 128;
-				args.final = wsi->u.http.filepos + n ==
-					     wsi->u.http.filelen;
-				if (user_callback_handle_rxflow(
-				     wsi->vhost->protocols[(int)wsi->protocol_interpret_idx].callback, wsi,
-				     LWS_CALLBACK_PROCESS_HTML,
-				     wsi->user_space, &args, 0) < 0)
-					goto file_had_it;
-				n = args.len;
-				p = (unsigned char *)args.p;
-			} else
-				p = pstart;
-
-#if defined(LWS_WITH_RANGES)
-			if (wsi->u.http.range.send_ctr + 1 ==
-				wsi->u.http.range.count_ranges && // last range
-			    wsi->u.http.range.count_ranges > 1 && // was 2+ ranges (ie, multipart)
-			    wsi->u.http.range.budget - amount == 0) {// final part
-				n += lws_snprintf((char *)pstart + n, 6,
-					"_lws\x0d\x0a"); // append trailing boundary
-				lwsl_debug("added trailing boundary\n");
-			}
-#endif
-			m = lws_write(wsi, p, n,
-				      wsi->u.http.filepos == wsi->u.http.filelen ?
-					LWS_WRITE_HTTP_FINAL :
-					LWS_WRITE_HTTP
-				);
-			if (m < 0)
-				goto file_had_it;
-
-			wsi->u.http.filepos += amount;
-
-#if defined(LWS_WITH_RANGES)
-			if (wsi->u.http.range.count_ranges >= 1) {
-				wsi->u.http.range.budget -= amount;
-				if (wsi->u.http.range.budget == 0) {
-					lwsl_notice("range budget exhausted\n");
-					wsi->u.http.range.inside = 0;
-					wsi->u.http.range.send_ctr++;
-
-					if (lws_ranges_next(&wsi->u.http.range) < 1) {
-						finished = 1;
-						goto all_sent;
-					}
-				}
-			}
-#endif
-
-			if (m != n) {
-				/* adjust for what was not sent */
-				if (lws_vfs_file_seek_cur(wsi->u.http.fop_fd,
-							   m - n) ==
-							     (unsigned long)-1)
-					goto file_had_it;
-			}
-		}
-
-all_sent:
-		if ((!wsi->trunc_len && wsi->u.http.filepos >= wsi->u.http.filelen)
-#if defined(LWS_WITH_RANGES)
-		    || finished)
-#else
-		)
-#endif
-		     {
-			wsi->state = LWSS_HTTP;
-			/* we might be in keepalive, so close it off here */
-			lws_vfs_file_close(&wsi->u.http.fop_fd);
-			
-			lwsl_debug("file completed\n");
-
-			if (wsi->protocol->callback &&
-			    user_callback_handle_rxflow(wsi->protocol->callback,
-					    	    	wsi, LWS_CALLBACK_HTTP_FILE_COMPLETION,
-					    	    	wsi->user_space, NULL,
-					    	    	0) < 0) {
-					/*
-					 * For http/1.x, the choices from
-					 * transaction_completed are either
-					 * 0 to use the connection for pipelined
-					 * or nonzero to hang it up.
-					 *
-					 * However for http/2. while we are
-					 * still interested in hanging up the
-					 * nwsi if there was a network-level
-					 * fatal error, simply completing the
-					 * transaction is a matter of the stream
-					 * state, not the root connection at the
-					 * network level
-					 */
-					if (wsi->http2_substream)
-						return 1;
-					else
-						return -1;
-				}
-
-			return 1;  /* >0 indicates completed */
-		}
-	}
-
-	lws_callback_on_writable(wsi);
-
-	return 0; /* indicates further processing must be done */
-
-file_had_it:
-	lws_vfs_file_close(&wsi->u.http.fop_fd);
-
-	return -1;
-}
-
-#if LWS_POSIX
-LWS_VISIBLE int
-lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len)
-{
-	struct lws_context *context = wsi->context;
-	struct lws_context_per_thread *pt = &context->pt[(int)wsi->tsi];
-	int n;
-
-	lws_stats_atomic_bump(context, pt, LWSSTATS_C_API_READ, 1);
-
-	n = recv(wsi->desc.sockfd, (char *)buf, len, 0);
-	if (n >= 0) {
-		if (wsi->vhost)
-			wsi->vhost->conn_stats.rx += n;
-		lws_stats_atomic_bump(context, pt, LWSSTATS_B_READ, n);
-		lws_restart_ws_ping_pong_timer(wsi);
-		return n;
-	}
-#if LWS_POSIX
-	if (LWS_ERRNO == LWS_EAGAIN ||
-	    LWS_ERRNO == LWS_EWOULDBLOCK ||
-	    LWS_ERRNO == LWS_EINTR)
-		return LWS_SSL_CAPABLE_MORE_SERVICE;
-#endif
-	lwsl_notice("error on reading from skt : %d\n", LWS_ERRNO);
-	return LWS_SSL_CAPABLE_ERROR;
-}
-
-LWS_VISIBLE int
-lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len)
-{
-	int n = 0;
-
-#if LWS_POSIX
-	n = send(wsi->desc.sockfd, (char *)buf, len, MSG_NOSIGNAL);
-//	lwsl_info("%s: sent len %d result %d", __func__, len, n);
-	if (n >= 0)
-		return n;
-
-	if (LWS_ERRNO == LWS_EAGAIN ||
-	    LWS_ERRNO == LWS_EWOULDBLOCK ||
-	    LWS_ERRNO == LWS_EINTR) {
-		if (LWS_ERRNO == LWS_EWOULDBLOCK) {
-			lws_set_blocking_send(wsi);
-		}
-
-		return LWS_SSL_CAPABLE_MORE_SERVICE;
-	}
-#else
-	(void)n;
-	(void)wsi;
-	(void)buf;
-	(void)len;
-	// !!!
-#endif
-
-	lwsl_debug("ERROR writing len %d to skt fd %d err %d / errno %d\n",
-			len, wsi->desc.sockfd, n, LWS_ERRNO);
-	return LWS_SSL_CAPABLE_ERROR;
-}
-#endif
-LWS_VISIBLE int
-lws_ssl_pending_no_ssl(struct lws *wsi)
-{
-	(void)wsi;
-#if defined(LWS_WITH_ESP32)
-	return 100;
-#else
-	return 0;
-#endif
-}