Added comments
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ae4801bba6
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2 changed files with 20 additions and 2 deletions
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@ -62,6 +62,13 @@ send_get(struct websocket_http_client_state *s)
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if(strlen(s->header) > 0) {
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tcp_socket_send_str(tcps, s->header);
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}
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/* The Sec-WebSocket-Key: x3JJHMbDL1EzLkh9GBhXDw== header is
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supposed to be a random value, encoded as base64, that is SHA1
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hashed by the server and returned in a HTTP header. This is used
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to make sure that we are not seeing some cached version of this
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conversation. But we have no SHA1 code by default in Contiki, so
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we can't check the return value. Therefore we just use a
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hardcoded value here. */
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tcp_socket_send_str(tcps,
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"Connection: Upgrade\r\n"
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"Upgrade: websocket\r\n"
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@ -112,6 +119,8 @@ event(struct tcp_socket *tcps, void *ptr,
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} else if(e == TCP_SOCKET_ABORTED) {
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websocket_http_client_aborted(s);
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} else if(e == TCP_SOCKET_DATA_SENT) {
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/* We could feed this information up to the websocket.c layer, but
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we currently do not do that. */
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}
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}
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/*---------------------------------------------------------------------------*/
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@ -131,7 +140,9 @@ parse_header_byte(struct websocket_http_client_state *s,
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/* Skip the space that follow the first part */
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PT_YIELD(&s->parse_header_pt);
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/* Read the first three bytes that consistute the HTTP status code. */
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/* Read the first three bytes that constistute the HTTP status
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code. We store the HTTP status code as an integer in the
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s->http_status field. */
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s->http_status = (b - '0');
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PT_YIELD(&s->parse_header_pt);
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s->http_status = s->http_status * 10 + (b - '0');
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