wiced_result_t open_websocket(websocket_handshake_t *hs, websocket_msg_handler_t binary_msg_handler, websocket_msg_handler_t text_msg_handler, void *ctx) { wiced_result_t ret; wiced_ip_address_t host_ip; wiced_tls_context_t tls_ctx; wiced_tcp_socket_t sock; wiced_tcp_stream_t stream; char *buf = NULL; uint32_t i; https_header_t *header; WPRINT_LIB_INFO( ("Starting WebSocket handshake to https://%s%s\n", hs->hostname, hs->path) ); ret = wiced_hostname_lookup(hs->hostname, &host_ip, DNS_TIMEOUT); if (ret != WICED_SUCCESS) { WPRINT_LIB_INFO( ("DNS lookup failed for %s (err=%u)\n", hs->hostname, ret) ); return ret; } wiced_tls_init_context(&tls_ctx, NULL, NULL); wiced_tcp_create_socket(&sock, WICED_STA_INTERFACE); wiced_tcp_enable_tls(&sock, &tls_ctx); { char ip_str[48]; ip_to_str(&host_ip, ip_str); WPRINT_LIB_INFO( ("Establishing TLS connection to %s port %d\n", ip_str, HTTPS_PORT) ); } ret = wiced_tcp_connect(&sock, &host_ip, HTTPS_PORT, HTTPS_CONNECT_TIMEOUT); if (ret != WICED_SUCCESS) { WPRINT_LIB_INFO( ("Failed to create TCP connection (err=%u)\n", ret) ); wiced_tcp_delete_socket(&sock); return ret; } do { ret = wiced_tcp_stream_init(&stream, &sock); if (ret != WICED_SUCCESS) { WPRINT_LIB_INFO( ("Failed to initialize TCP stream (err=%u)\n", ret) ); break; } buf = (char *)malloc(STREAM_BUF_SIZE); snprintf(buf, STREAM_BUF_SIZE, "GET %s HTTP/1.1\r\n", hs->path); WRITE_STREAM(stream, buf, ret); // Required headers. snprintf(buf, STREAM_BUF_SIZE, "Host: %s\r\n" \ "Connection: upgrade\r\n" \ "Upgrade: websocket\r\n" \ "Sec-WebSocket-Key: %s\r\n" \ "Sec-WebSocket-Version: 13\r\n", hs->hostname, hs->key); WRITE_STREAM(stream, buf, ret); // Additional headers. for (i = 0; i < hs->num_headers; i++) { header = &(hs->headers[i]); snprintf(buf, STREAM_BUF_SIZE, "%s: %s\r\n", header->name, header->value); WRITE_STREAM(stream, buf, ret); } if (i < hs->num_headers) { break; } strcpy(buf, "\r\n"); WRITE_STREAM(stream, buf, ret); ret = wiced_tcp_stream_flush(&stream); if (ret != WICED_SUCCESS) { break; } ret = process_handshake_response(hs, &sock); } while (WICED_FALSE); if (buf) { free(buf); } wiced_tcp_stream_deinit(&stream); if (ret == WICED_SUCCESS) { WPRINT_LIB_INFO( ("WebSocket handshake OK\n") ); process_frames(&sock, binary_msg_handler, text_msg_handler, ctx); WPRINT_LIB_INFO( ("Closing WebSocket.\n") ); } else { WPRINT_LIB_INFO( ("WebSocket handshake failed (err=%u)\n", ret) ); } wiced_tcp_disconnect(&sock); wiced_tcp_delete_socket(&sock); return ret; }
static void tcp_server_thread_main(wiced_thread_arg_t arg) { wiced_bool_t wwepSecurity = (wiced_bool_t)arg; wiced_result_t result; wiced_tcp_stream_t stream; // The TCP stream wiced_tcp_socket_t socket; platform_dct_security_t *dct_security; wiced_tls_identity_t tls_identity; wiced_tls_context_t tls_context; uint8_t rbuffer[MAX_LEGAL_MSG]; char returnMessage[128]; // better use less than 128 bytes // setup the server by creating the socket and hooking it to the correct TCP Port result = wiced_tcp_create_socket(&socket, INTERFACE); if(WICED_SUCCESS != result) { WPRINT_APP_INFO(("Create socket failed\n")); return; // this is a bad outcome } if(wwepSecurity == WICED_TRUE) { WPRINT_APP_INFO(("Starting secure\n")); } else { WPRINT_APP_INFO(("Starting non-secure\n")); } result = wiced_tcp_listen( &socket, (wwepSecurity == WICED_TRUE)?TCP_SERVER_SECURE_LISTEN_PORT:TCP_SERVER_NONSECURE_LISTEN_PORT ); if(WICED_SUCCESS != result) { WPRINT_APP_INFO(("Listen socket failed\n")); return; } if(wwepSecurity == WICED_TRUE) { /* Lock the DCT to allow us to access the certificate and key */ WPRINT_APP_INFO(( "Read the certificate Key from DCT\n" )); result = wiced_dct_read_lock( (void**) &dct_security, WICED_FALSE, DCT_SECURITY_SECTION, 0, sizeof( *dct_security ) ); if ( result != WICED_SUCCESS ) { WPRINT_APP_INFO(("Unable to lock DCT to read certificate\n")); return; } /* Setup TLS identity */ result = wiced_tls_init_identity( &tls_identity, dct_security->private_key, strlen( dct_security->private_key ), (uint8_t*) dct_security->certificate, strlen( dct_security->certificate ) ); if ( result != WICED_SUCCESS ) { WPRINT_APP_INFO(( "Unable to initialize TLS identity. Error = [%d]\n", result )); return; } } else { wiced_tcp_stream_init(&stream,&socket); if(WICED_SUCCESS != result) { WPRINT_APP_INFO(("Init stream failed\n")); return; // this is a bad outcome } } while (1 ) { if(wwepSecurity == WICED_TRUE) { result = wiced_tls_init_context( &tls_context, &tls_identity, NULL ); if(result != WICED_SUCCESS) { WPRINT_APP_INFO(("Init context failed %d",result)); return; } result = wiced_tcp_enable_tls(&socket,&tls_context); if(result != WICED_SUCCESS) { WPRINT_APP_INFO(("Enabling TLS failed %d",result)); return; } wiced_tcp_stream_init(&stream,&socket); if(WICED_SUCCESS != result) { WPRINT_APP_INFO(("Init stream failed\n")); return; // this is a bad outcome } } result = wiced_tcp_accept( &socket ); // this halts the thread until there is a connection if(result != WICED_SUCCESS) // this occurs if the accept times out continue; if(wwepSecurity == WICED_TRUE) secureConnectionCount += 1; else nonsecureConnectionCount += 1; /// Figure out which client is talking to us... and on which port wiced_ip_address_t peerAddress; uint16_t peerPort; wiced_tcp_server_peer(&socket,&peerAddress,&peerPort); uint32_t dataReadCount; wiced_tcp_stream_read_with_count(&stream,&rbuffer,MAX_LEGAL_MSG,100,&dataReadCount); // timeout in 100 ms processClientCommand(rbuffer, dataReadCount ,returnMessage); displayResult(peerAddress,peerPort,returnMessage); // send response and close things up wiced_tcp_stream_write(&stream,returnMessage,strlen(returnMessage)); wiced_tcp_stream_flush(&stream); wiced_tcp_disconnect(&socket); // disconnect the connection if(wwepSecurity == WICED_TRUE) { wiced_tls_deinit_context(&tls_context); } wiced_tcp_stream_deinit(&stream); // clear the stream if any crap left wiced_tcp_stream_init(&stream,&socket); // setup for next connection } }