#include "private-libwebsockets.h"
const struct lws_tokens lws_tokens[WSI_TOKEN_COUNT] = {
- [WSI_TOKEN_GET_URI] = { "GET ", 4 },
- [WSI_TOKEN_HOST] = { "Host:", 5 },
+ [WSI_TOKEN_GET_URI] = { "GET ", 4 },
+ [WSI_TOKEN_HOST] = { "Host:", 5 },
[WSI_TOKEN_CONNECTION] = { "Connection:", 11 },
[WSI_TOKEN_KEY1] = { "Sec-WebSocket-Key1:", 19 },
[WSI_TOKEN_KEY2] = { "Sec-WebSocket-Key2:", 19 },
[WSI_TOKEN_PROTOCOL] = { "Sec-WebSocket-Protocol:", 23 },
- [WSI_TOKEN_UPGRADE] = { "Upgrade:", 8 },
- [WSI_TOKEN_ORIGIN] = { "Origin:", 7 },
+ [WSI_TOKEN_UPGRADE] = { "Upgrade:", 8 },
+ [WSI_TOKEN_ORIGIN] = { "Origin:", 7 },
[WSI_TOKEN_DRAFT] = { "Sec-WebSocket-Draft:", 20 },
- [WSI_TOKEN_CHALLENGE] = { "\x0d\x0a", 2 },
+ [WSI_TOKEN_CHALLENGE] = { "\x0d\x0a", 2 },
[WSI_TOKEN_KEY] = { "Sec-WebSocket-Key:", 18 },
[WSI_TOKEN_VERSION] = { "Sec-WebSocket-Version:", 22 },
+ [WSI_TOKEN_ACCEPT] = { "Sec-WebSocket-Accept:", 21 },
+ [WSI_TOKEN_NONCE] = { "Sec-WebSocket-Nonce:", 20 },
+ [WSI_TOKEN_HTTP] = { "HTTP/1.1 ", 9 },
+ [WSI_TOKEN_SWORIGIN] = { "Sec-WebSocket-Origin:", 21 },
+
};
int libwebsocket_parse(struct libwebsocket *wsi, unsigned char c)
case WSI_TOKEN_PROTOCOL:
case WSI_TOKEN_UPGRADE:
case WSI_TOKEN_ORIGIN:
+ case WSI_TOKEN_SWORIGIN:
case WSI_TOKEN_DRAFT:
case WSI_TOKEN_CHALLENGE:
case WSI_TOKEN_KEY:
case WSI_TOKEN_VERSION:
+ case WSI_TOKEN_ACCEPT:
+ case WSI_TOKEN_NONCE:
+ case WSI_TOKEN_HTTP:
debug("WSI_TOKEN_(%d) '%c'\n", wsi->parser_state, c);
/* collect into malloc'd buffers */
debug("known hdr '%s'\n", wsi->name_buffer);
wsi->parser_state = WSI_TOKEN_GET_URI + n;
wsi->current_alloc_len = LWS_INITIAL_HDR_ALLOC;
+
wsi->utf8_token[wsi->parser_state].token =
malloc(wsi->current_alloc_len);
wsi->utf8_token[wsi->parser_state].token_len = 0;
break;
}
+ if (wsi->parser_state != WSI_TOKEN_CHALLENGE)
+ break;
+
/* don't look for payload when it can just be http headers */
- if (wsi->parser_state == WSI_TOKEN_CHALLENGE &&
- !wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len) {
+ if (!wsi->utf8_token[WSI_TOKEN_UPGRADE].token_len) {
/* they're HTTP headers, not websocket upgrade! */
debug("Setting WSI_PARSING_COMPLETE "
"from http headers\n");
wsi->parser_state = WSI_PARSING_COMPLETE;
}
+
+ /* 04 version has no packet content after end of hdrs */
+
+ if (wsi->utf8_token[WSI_TOKEN_VERSION].token_len &&
+ atoi(wsi->utf8_token[WSI_TOKEN_VERSION].token) >= 4) {
+ debug("04 header completed\n");
+ wsi->parser_state = WSI_PARSING_COMPLETE;
+ }
+
+ /* client parser? */
+
+ if (wsi->ietf_spec_revision >= 4) {
+ debug("04 header completed\n");
+ wsi->parser_state = WSI_PARSING_COMPLETE;
+ }
+
break;
/* skipping arg part of a name we didn't recognize */
}
static unsigned char inline
-unmask(struct libwebsocket *wsi, unsigned char c)
+xor_mask(struct libwebsocket *wsi, unsigned char c)
{
c ^= wsi->masking_key_04[wsi->frame_mask_index++];
if (wsi->frame_mask_index == 20)
if (c == 0xff)
wsi->lws_rx_parse_state = LWS_RXPS_SEEN_76_FF;
if (c == 0) {
- wsi->lws_rx_parse_state = LWS_RXPS_EAT_UNTIL_76_FF;
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_EAT_UNTIL_76_FF;
wsi->rx_user_buffer_head = 0;
}
break;
* FIN (b7)
*/
- c = unmask(wsi, c);
+ c = xor_mask(wsi, c);
if (c & 0x70) {
- fprintf(stderr, "Frame has extensions set illegally\n");
+ fprintf(stderr, "Frame has extensions set illegally 1\n");
/* kill the connection */
return -1;
}
break;
case LWS_RXPS_04_FRAME_HDR_LEN:
- c = unmask(wsi, c);
+ c = xor_mask(wsi, c);
if (c & 0x80) {
- fprintf(stderr, "Frame has extensions set illegally\n");
+ fprintf(stderr, "Frame has extensions "
+ "set illegally 2\n");
/* kill the connection */
return -1;
}
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_8;
break;
default:
+// fprintf(stderr, "seen incoming 04 frame len %d\n", c);
wsi->rx_packet_length = c;
wsi->lws_rx_parse_state =
LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
break;
case LWS_RXPS_04_FRAME_HDR_LEN16_2:
- c = unmask(wsi, c);
+ c = xor_mask(wsi, c);
wsi->rx_packet_length = c << 8;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_1;
break;
case LWS_RXPS_04_FRAME_HDR_LEN16_1:
- c = unmask(wsi, c);
+ c = xor_mask(wsi, c);
wsi->rx_packet_length |= c;
wsi->lws_rx_parse_state =
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_8:
- c = unmask(wsi, c);
+ c = xor_mask(wsi, c);
if (c & 0x80) {
fprintf(stderr, "b63 of length must be zero\n");
/* kill the connection */
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_7:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c)) << 48;
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c)) << 48;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_6;
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_6:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c)) << 40;
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c)) << 40;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_5;
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_5:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c)) << 32;
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c)) << 32;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_4;
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_4:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c)) << 24;
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c)) << 24;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_3;
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_3:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c)) << 16;
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c)) << 16;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_2;
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_2:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c)) << 8;
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c)) << 8;
wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_1;
break;
case LWS_RXPS_04_FRAME_HDR_LEN64_1:
- wsi->rx_packet_length |= ((size_t)unmask(wsi, c));
+ wsi->rx_packet_length |= ((size_t)xor_mask(wsi, c));
wsi->lws_rx_parse_state =
LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
break;
case LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED:
wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
- (wsi->rx_user_buffer_head++)] = unmask(wsi, c);
+ (wsi->rx_user_buffer_head++)] = xor_mask(wsi, c);
+
if (--wsi->rx_packet_length == 0) {
wsi->lws_rx_parse_state = LWS_RXPS_NEW;
goto spill;
* so it can be sent straight out again using libwebsocket_write
*/
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ wsi->rx_user_buffer_head] = '\0';
+
if (wsi->protocol->callback)
wsi->protocol->callback(wsi, LWS_CALLBACK_RECEIVE,
- wsi->user_space,
+ wsi->user_space,
&wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
- wsi->rx_user_buffer_head);
+ wsi->rx_user_buffer_head);
+ wsi->rx_user_buffer_head = 0;
+ break;
+ }
+
+ return 0;
+}
+
+
+int libwebsocket_client_rx_sm(struct libwebsocket *wsi, unsigned char c)
+{
+ int n;
+ unsigned char buf[20 + 4];
+
+ switch (wsi->lws_rx_parse_state) {
+ case LWS_RXPS_NEW:
+
+ switch (wsi->ietf_spec_revision) {
+ /* Firefox 4.0b6 likes this as of 30 Oct */
+ case 0:
+ if (c == 0xff)
+ wsi->lws_rx_parse_state = LWS_RXPS_SEEN_76_FF;
+ if (c == 0) {
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_EAT_UNTIL_76_FF;
+ wsi->rx_user_buffer_head = 0;
+ }
+ break;
+ case 4:
+ /*
+ * 04 logical framing from the spec (all this is masked when incoming
+ * and has to be unmasked)
+ *
+ * We ignore the possibility of extension data because we don't
+ * negotiate any extensions at the moment.
+ *
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-------+-+-------------+-------------------------------+
+ * |F|R|R|R| opcode|R| Payload len | Extended payload length |
+ * |I|S|S|S| (4) |S| (7) | (16/63) |
+ * |N|V|V|V| |V| | (if payload len==126/127) |
+ * | |1|2|3| |4| | |
+ * +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - +
+ * | Extended payload length continued, if payload len == 127 |
+ * + - - - - - - - - - - - - - - - +-------------------------------+
+ * | | Extension data |
+ * +-------------------------------+ - - - - - - - - - - - - - - - +
+ * : :
+ * +---------------------------------------------------------------+
+ * : Application data :
+ * +---------------------------------------------------------------+
+ *
+ * We pass payload through to userland as soon as we get it, ignoring
+ * FIN. It's up to userland to buffer it up if it wants to see a
+ * whole unfragmented block of the original size (which may be up to
+ * 2^63 long!)
+ */
+
+ /*
+ * 04 spec defines the opcode like this: (1, 2, and 3 are
+ * "control frame" opcodes which may not be fragmented or
+ * have size larger than 126)
+ *
+ * frame-opcode =
+ * %x0 ; continuation frame
+ * / %x1 ; connection close
+ * / %x2 ; ping
+ * / %x3 ; pong
+ * / %x4 ; text frame
+ * / %x5 ; binary frame
+ * / %x6-F ; reserved
+ *
+ * FIN (b7)
+ */
+
+ if (c & 0x70) {
+ fprintf(stderr, "Frame has extensions set "
+ "illegally on first framing byte %02X\n", c);
+ /* kill the connection */
+ return -1;
+ }
+
+ wsi->opcode = c & 0xf;
+ wsi->final = !!((c >> 7) & 1);
+
+ if (wsi->final &&
+ wsi->opcode == LWS_WS_OPCODE_04__CONTINUATION &&
+ wsi->rx_packet_length == 0) {
+ fprintf(stderr,
+ "Frame starts with final continuation\n");
+ /* kill the connection */
+ return -1;
+ }
+
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN;
+ break;
+ }
+ break;
+
+
+ case LWS_RXPS_04_FRAME_HDR_LEN:
+
+ if (c & 0x80) {
+ fprintf(stderr,
+ "Frame has extensions set illegally 4\n");
+ /* kill the connection */
+ return -1;
+ }
+
+ switch (c) {
+ case 126:
+ /* control frames are not allowed to have big lengths */
+ switch (wsi->opcode) {
+ case LWS_WS_OPCODE_04__CLOSE:
+ case LWS_WS_OPCODE_04__PING:
+ case LWS_WS_OPCODE_04__PONG:
+ fprintf(stderr, "Control frame asking for "
+ "extended length is illegal\n");
+ /* kill the connection */
+ return -1;
+ default:
+ break;
+ }
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_2;
+ break;
+ case 127:
+ /* control frames are not allowed to have big lengths */
+ switch (wsi->opcode) {
+ case LWS_WS_OPCODE_04__CLOSE:
+ case LWS_WS_OPCODE_04__PING:
+ case LWS_WS_OPCODE_04__PONG:
+ fprintf(stderr, "Control frame asking for "
+ "extended length is illegal\n");
+ /* kill the connection */
+ return -1;
+ default:
+ break;
+ }
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_8;
+ break;
+ default:
+ wsi->rx_packet_length = c;
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ break;
+ }
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN16_2:
+ wsi->rx_packet_length = c << 8;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN16_1;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN16_1:
+ wsi->rx_packet_length |= c;
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_8:
+ if (c & 0x80) {
+ fprintf(stderr, "b63 of length must be zero\n");
+ /* kill the connection */
+ return -1;
+ }
+ wsi->rx_packet_length = ((size_t)c) << 56;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_7;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_7:
+ wsi->rx_packet_length |= ((size_t)c) << 48;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_6;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_6:
+ wsi->rx_packet_length |= ((size_t)c) << 40;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_5;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_5:
+ wsi->rx_packet_length |= ((size_t)c) << 32;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_4;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_4:
+ wsi->rx_packet_length |= ((size_t)c) << 24;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_3;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_3:
+ wsi->rx_packet_length |= ((size_t)c) << 16;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_2;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_2:
+ wsi->rx_packet_length |= ((size_t)c) << 8;
+ wsi->lws_rx_parse_state = LWS_RXPS_04_FRAME_HDR_LEN64_1;
+ break;
+
+ case LWS_RXPS_04_FRAME_HDR_LEN64_1:
+ wsi->rx_packet_length |= (size_t)c;
+ wsi->lws_rx_parse_state =
+ LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED;
+ break;
+
+ case LWS_RXPS_EAT_UNTIL_76_FF:
+ if (c == 0xff) {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto issue;
+ }
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] = c;
+
+ if (wsi->rx_user_buffer_head != MAX_USER_RX_BUFFER)
+ break;
+issue:
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi,
+ LWS_CALLBACK_CLIENT_RECEIVE,
+ wsi->user_space,
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head);
wsi->rx_user_buffer_head = 0;
break;
+ case LWS_RXPS_SEEN_76_FF:
+ if (c)
+ break;
+
+ debug("Seen that client is requesting "
+ "a v76 close, sending ack\n");
+ buf[0] = 0xff;
+ buf[1] = 0;
+ n = libwebsocket_write(wsi, buf, 2, LWS_WRITE_HTTP);
+ if (n < 0) {
+ fprintf(stderr, "ERROR writing to socket");
+ return -1;
+ }
+ debug(" v76 close ack sent, server closing skt\n");
+ /* returning < 0 will get it closed in parent */
+ return -1;
+
+ case LWS_RXPS_PULLING_76_LENGTH:
+ break;
+
+ case LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED:
+ wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING +
+ (wsi->rx_user_buffer_head++)] = c;
+ if (--wsi->rx_packet_length == 0) {
+ wsi->lws_rx_parse_state = LWS_RXPS_NEW;
+ goto spill;
+ }
+ if (wsi->rx_user_buffer_head != MAX_USER_RX_BUFFER)
+ break;
+spill:
+ /*
+ * is this frame a control packet we should take care of at this
+ * layer? If so service it and hide it from the user callback
+ */
+
+ switch (wsi->opcode) {
+ case LWS_WS_OPCODE_04__CLOSE:
+ /* parrot the close packet payload back */
+ n = libwebsocket_write(wsi, (unsigned char *)
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head, LWS_WRITE_CLOSE);
+ /* close the connection */
+ return -1;
+
+ case LWS_WS_OPCODE_04__PING:
+ /* parrot the ping packet payload back as a pong*/
+ n = libwebsocket_write(wsi, (unsigned char *)
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head, LWS_WRITE_PONG);
+ break;
+
+ case LWS_WS_OPCODE_04__PONG:
+ /* keep the statistics... */
+ wsi->pings_vs_pongs--;
+ /* ... then just drop it */
+ wsi->rx_user_buffer_head = 0;
+ return 0;
+
+ default:
+ break;
+ }
+
+ /*
+ * No it's real payload, pass it up to the user callback.
+ * It's nicely buffered with the pre-padding taken care of
+ * so it can be sent straight out again using libwebsocket_write
+ */
+
+ if (wsi->protocol->callback)
+ wsi->protocol->callback(wsi,
+ LWS_CALLBACK_CLIENT_RECEIVE,
+ wsi->user_space,
+ &wsi->rx_user_buffer[LWS_SEND_BUFFER_PRE_PADDING],
+ wsi->rx_user_buffer_head);
+ wsi->rx_user_buffer_head = 0;
+ break;
+ default:
+ fprintf(stderr, "client rx illegal state\n");
+ return 1;
}
return 0;
}
+
+
int libwebsocket_interpret_incoming_packet(struct libwebsocket *wsi,
unsigned char *buf, size_t len)
{
/* let the rx protocol state machine have as much as it needs */
n = 0;
- while (wsi->lws_rx_parse_state !=
- LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED && n < len)
+ while (n < len)
if (libwebsocket_rx_sm(wsi, buf[n++]) < 0)
return -1;
- return -0;
+ return 0;
}
+static int
+libwebsocket_04_frame_mask_generate(struct libwebsocket *wsi)
+{
+ int fd;
+ char buf[4 + 20];
+ int n;
+
+ /* fetch the per-frame nonce */
+
+ fd = open(SYSTEM_RANDOM_FILEPATH, O_RDONLY);
+ if (fd < 1) {
+ fprintf(stderr, "Unable to open random device %s\n",
+ SYSTEM_RANDOM_FILEPATH);
+ return 1;
+ }
+ n = read(fd, wsi->frame_masking_nonce_04, 4);
+ if (n != 4) {
+ fprintf(stderr, "Unable to read from random device %s %d\n",
+ SYSTEM_RANDOM_FILEPATH, n);
+ return 1;
+ }
+ close(fd);
+
+ /*
+ * the frame key is the frame nonce (4 bytes) followed by the
+ * connection masking key, hashed by SHA1
+ */
+
+ memcpy(buf, wsi->frame_masking_nonce_04, 4);
+ memcpy(buf + 4, wsi->masking_key_04, 20);
+
+ /* concatenate the nonce with the connection key then hash it */
+
+ SHA1((unsigned char *)buf, 4 + 20, wsi->frame_mask_04);
+
+ /* start masking from first byte of masking key buffer */
+ wsi->frame_mask_index = 0;
+
+ return 0;
+}
+
/**
* libwebsocket_write() - Apply protocol then write data to client
return -1;
}
+ /*
+ * We don't really support the metaframe concept with FIN.
+ * Just set FIN on every packet for now
+ */
+
+ n |= 1 << 7;
+
if (len < 126) {
buf[-2] = n;
buf[-1] = len;
fprintf(stderr, "\n");
#endif
+ /*
+ * Deal with masking if appropriate
+ */
+
+ if (wsi->client_mode && wsi->ietf_spec_revision == 4) {
+
+ if (libwebsocket_04_frame_mask_generate(wsi)) {
+ fprintf(stderr, "libwebsocket_write: "
+ "frame mask generation failed\n");
+ return 1;
+ }
+
+ /*
+ * use the XOR masking against everything we send
+ * past the frame nonce
+ */
+
+ for (n = 0; n < (len + pre + post); n++)
+ buf[n - pre] = xor_mask(wsi, buf[n - pre]);
+
+ /* make space for the frame nonce in clear */
+ pre += 4;
+
+ /* copy the frame nonce into place */
+ memcpy(&buf[0 - pre], wsi->frame_masking_nonce_04, 4);
+ }
+
+
send_raw:
#ifdef LWS_OPENSSL_SUPPORT
if (use_ssl) {
return 0;
}
+
/**
* libwebsockets_remaining_packet_payload() - Bytes to come before "overall"
* rx packet is complete
projects / profile / ivi / libwebsockets.git / blobdiff