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sdp server - adapt to minimal MTU (started)
This commit is contained in:
matthias.ringwald
parent
75a107579f
commit
4d749e8b1f
77
src/sdp.c
77
src/sdp.c
@ -50,7 +50,8 @@
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#define maxReservedServiceRecordHandle 0xffff
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// max SDP response
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#define SDP_RESPONSE_BUFFER_SIZE (HCI_ACL_BUFFER_SIZE-HCI_ACL_HEADER_SIZE)
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// #define SDP_RESPONSE_BUFFER_SIZE (HCI_ACL_BUFFER_SIZE-HCI_ACL_HEADER_SIZE)
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#define SDP_RESPONSE_BUFFER_SIZE 1000
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static void sdp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
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@ -450,32 +451,29 @@ int sdp_handle_service_search_attribute_request(uint8_t * packet, uint16_t remot
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continuation_offset = READ_NET_16(continuationState, 3);
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}
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printf("-> sdp_handle_service_search_attribute_request: continuation (%u, %u)\n", continuation_service_index, continuation_offset);
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// AttributeLists - starts at offset 7
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uint16_t pos = 7;
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int complete_response = 0;
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uint16_t total_response_size = 3;
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// get sum of all service attribute responses on first response and create DES header for it
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// note: this fills the response buffer several times
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uint16_t total_response_size = 0;
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linked_item_t *it;
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if (!continuation_service_index && !continuation_offset){
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// for all service records that match
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for (it = (linked_item_t *) sdp_service_records; it ; it = it->next){
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service_record_item_t * item = (service_record_item_t *) it;
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if (sdp_record_matches_service_search_pattern(item->service_record, serviceSearchPattern)){
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uint8_t *attributeList = &sdp_response_buffer[0];
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de_create_sequence(attributeList);
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// copy ALL specified attributes
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sdp_append_attributes_in_attributeIDList(item->service_record, attributeIDList, 0, SDP_RESPONSE_BUFFER_SIZE-7-3, attributeList);
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total_response_size += de_get_len(attributeList);
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total_response_size += 3 + spd_get_filtered_size(item->service_record, attributeIDList);
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}
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}
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de_store_descriptor_with_len(&sdp_response_buffer[pos], DE_DES, DE_SIZE_VAR_16, total_response_size);
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pos += de_get_header_size(&sdp_response_buffer[pos]);
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complete_response = total_response_size + 3 <= maximumAttributeByteCount; // all in one?
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complete_response = total_response_size <= maximumAttributeByteCount; // all in one?
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log_info("total response size %u, maximumAttributeByteCount %u \n", total_response_size, maximumAttributeByteCount);
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}
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// also get highest index of matching record
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// get highest index of matching record - to know when to stop
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int highest_matching_record = -1;
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uint16_t current_service_index = 0;
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// for all service records that match
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@ -661,11 +659,11 @@ static void sdp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *p
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}
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}
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#if 0
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#if 1
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static uint8_t record[100];
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static uint8_t request[100];
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static uint8_t response[100];
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static void dump_service_search_response(){
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static void dump_service_search_response(void){
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uint16_t nr_services = READ_NET_16(sdp_response_buffer, 7);
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int i;
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printf("Nr service handles: %u\n", nr_services);
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@ -680,8 +678,22 @@ static void dump_service_search_response(){
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}
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void sdp_test(){
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const uint16_t remote_mtu = 150;
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const uint16_t remote_mtu = 48;
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uint8_t allAttributeIDs[20]; //
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// create an attribute list
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de_create_sequence(allAttributeIDs);
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de_add_number(allAttributeIDs, DE_UINT, DE_SIZE_32, 0x0000ffff);
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// create a service search pattern
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uint8_t serviceOneSearchPattern[20];
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de_create_sequence(serviceOneSearchPattern);
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{
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de_add_number(serviceOneSearchPattern, DE_UUID, DE_SIZE_16, 0x0001);
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}
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uint16_t serviceOneSearchPatternLen = de_get_len(serviceOneSearchPattern);
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// create two records with 2 attributes each
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de_create_sequence(record);
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de_add_number(record, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle);
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@ -691,6 +703,7 @@ void sdp_test(){
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de_add_number(record, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList);
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de_add_number(record, DE_UUID, DE_SIZE_16, 0x0001);
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uint32_t handle_1 = sdp_register_service_internal(NULL, record);
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de_dump_data_element(record);
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de_create_sequence(record);
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de_add_number(record, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle);
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@ -700,17 +713,18 @@ void sdp_test(){
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de_add_number(record, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList);
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de_add_number(record, DE_UUID, DE_SIZE_16, 0x0001);
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sdp_register_service_internal(NULL, record);
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de_dump_data_element(record);
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// sdp_handle_service_search_request
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uint16_t size = spd_get_filtered_size(record, allAttributeIDs);
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printf("Attribute size %u\n", size);
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uint16_t transactionID = 1;
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#if 0
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// sdp_handle_service_search_request
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uint16_t nr_services = 1;
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request[0] = SDP_ServiceSearchRequest;
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net_store_16(request, 1, transactionID++); // transaction ID
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uint8_t * serviceSearchPattern = &request[5];
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de_create_sequence(serviceSearchPattern);
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{
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de_add_number(serviceSearchPattern, DE_UUID, DE_SIZE_16, 0x0001);
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}
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uint16_t serviceSearchPatternLen = de_get_len(serviceSearchPattern);
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net_store_16(request, 5 + serviceSearchPatternLen, 1);
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request[5 + serviceSearchPatternLen + 2] = 0;
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@ -719,7 +733,9 @@ void sdp_test(){
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memcpy(request + 5 + serviceSearchPatternLen + 2, sdp_response_buffer + 9 + nr_services*4, 3);
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sdp_handle_service_search_request(request, remote_mtu);
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dump_service_search_response();
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#endif
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#if 0
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// sdp_handle_service_attribute_request
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request[0] = SDP_ServiceAttributeRequest;
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net_store_16(request, 1, transactionID++); // transaction ID
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@ -743,22 +759,25 @@ void sdp_test(){
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memcpy(request+11+attributeIDListLen, sdp_response_buffer+7+attributeListByteCount, 3);
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}
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de_dump_data_element(response);
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#endif
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#if 1
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// sdp_handle_service_search_attribute_request
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request[0] = SDP_ServiceSearchAttributeRequest;
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net_store_16(request, 1, transactionID++); // transaction ID
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uint8_t * serviceSearchPattern = &request[5];
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de_create_sequence(serviceSearchPattern);
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{
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de_add_number(serviceSearchPattern, DE_UUID, DE_SIZE_16, 0x0001);
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}
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serviceSearchPatternLen = de_get_len(serviceSearchPattern);
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uint16_t serviceSearchPatternLen = de_get_len(serviceSearchPattern);
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net_store_16(request, 5 + serviceSearchPatternLen, 46); // MaximumAttributeByteCount:
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attributeIDList = request + 5 + serviceSearchPatternLen + 2;
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uint8_t * attributeIDList = request + 5 + serviceSearchPatternLen + 2;
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de_create_sequence(attributeIDList);
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de_add_number(attributeIDList, DE_UINT, DE_SIZE_32, 0x0000ffff);
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attributeIDListLen = de_get_len(attributeIDList);
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uint16_t attributeIDListLen = de_get_len(attributeIDList);
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request[5 + serviceSearchPatternLen + 2 + attributeIDListLen] = 0;
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response_pos = 0;
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uint16_t response_pos = 0;
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while (1) {
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sdp_handle_service_search_attribute_request(request, remote_mtu);
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uint16_t attributeListByteCount = READ_NET_16(sdp_response_buffer, 5);
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@ -773,7 +792,7 @@ void sdp_test(){
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memcpy(request+5 + serviceSearchPatternLen + 2 + attributeIDListLen, sdp_response_buffer+7+attributeListByteCount, 5);
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}
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de_dump_data_element(response);
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/////
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#endif
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exit(0);
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}
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#endif
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