Method handleHeader

src/utility/WebSocketsClient.cpp:551–674

* handle the WebSocket header reading * @param client WSclient_t * ptr to the client struct */

 * @param client WSclient_t *  ptr to the client struct
 */
void WebSocketsClient::handleHeader(WSclient_t * client, String * headerLine) {

    headerLine->trim(); // remove \r

    if(headerLine->length() > 0) {
        DEBUG_WEBSOCKETS("[WS-Client][handleHeader] RX: %s\n", headerLine->c_str());

        if(headerLine->startsWith(WEBSOCKETS_STRING("HTTP/1."))) {
            // "HTTP/1.1 101 Switching Protocols"
            client->cCode = headerLine->substring(9, headerLine->indexOf(' ', 9)).toInt();
        } else if(headerLine->indexOf(':')) {
            String headerName = headerLine->substring(0, headerLine->indexOf(':'));
            String headerValue = headerLine->substring(headerLine->indexOf(':') + 1);

            // remove space in the beginning  (RFC2616)
            if(headerValue[0] == ' ') {
                headerValue.remove(0, 1);
            }

            if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Connection"))) {
                if(headerValue.equalsIgnoreCase(WEBSOCKETS_STRING("upgrade"))) {
                    client->cIsUpgrade = true;
                }
            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Upgrade"))) {
                if(headerValue.equalsIgnoreCase(WEBSOCKETS_STRING("websocket"))) {
                    client->cIsWebsocket = true;
                }
            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Sec-WebSocket-Accept"))) {
                client->cAccept = headerValue;
                client->cAccept.trim(); // see rfc6455
            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Sec-WebSocket-Protocol"))) {
                client->cProtocol = headerValue;
            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Sec-WebSocket-Extensions"))) {
                client->cExtensions = headerValue;
            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Sec-WebSocket-Version"))) {
                client->cVersion = headerValue.toInt();
            } else if(headerName.equalsIgnoreCase(WEBSOCKETS_STRING("Set-Cookie"))) {
                if(headerValue.indexOf(WEBSOCKETS_STRING("HttpOnly")) > -1) {
                    client->cSessionId = headerValue.substring(headerValue.indexOf('=') + 1, headerValue.indexOf(";"));
                } else {
                    client->cSessionId = headerValue.substring(headerValue.indexOf('=') + 1);
                }
            }
        } else {
            DEBUG_WEBSOCKETS("[WS-Client][handleHeader] Header error (%s)\n", headerLine->c_str());
        }

        (*headerLine) = "";
#if (WEBSOCKETS_NETWORK_TYPE == NETWORK_ESP8266_ASYNC)
        client->tcp->readStringUntil('\n', &(client->cHttpLine), std::bind(&WebSocketsClient::handleHeader, this, client, &(client->cHttpLine)));
#endif

    } else {
        DEBUG_WEBSOCKETS("[WS-Client][handleHeader] Header read fin.\n");
        DEBUG_WEBSOCKETS("[WS-Client][handleHeader] Client settings:\n");

        DEBUG_WEBSOCKETS("[WS-Client][handleHeader]  - cURL: %s\n", client->cUrl.c_str());
        DEBUG_WEBSOCKETS("[WS-Client][handleHeader]  - cKey: %s\n", client->cKey.c_str());