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really only send partial AttrributeList for service_attribute_request

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matthias.ringwald 2010-09-10 22:59:22 +00:00
parent b1631edc2c
commit 273db449b6
1 changed files with 22 additions and 11 deletions
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33
src/sdp.c
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@ -297,10 +297,10 @@ int sdp_handle_service_attribute_request(uint8_t * packet, uint16_t remote_mtu){
maximumAttributeByteCount = maximumAttributeByteCount2;
}
// continuation state contains index of next attribute to examine
uint16_t continuation_index = 0;
// continuation state contains the offset into the complete response
uint16_t continuation_offset = 0;
if (continuationState[0] == 2){
continuation_index = READ_NET_16(continuationState, 1);
continuation_offset = READ_NET_16(continuationState, 1);
}
// get service record
@ -318,22 +318,33 @@ int sdp_handle_service_attribute_request(uint8_t * packet, uint16_t remote_mtu){
uint16_t pos = 7;
uint8_t *attributeList = &sdp_response_buffer[pos];
de_create_sequence(attributeList);
// copy specified attributes
int result = sdp_append_attributes_in_attributeIDList(item->service_record, attributeIDList, continuation_index, maximumAttributeByteCount, attributeList);
// copy ALL specified attributes
sdp_append_attributes_in_attributeIDList(item->service_record, attributeIDList, 0, SDP_RESPONSE_BUFFER_SIZE-7-3, attributeList);
pos += de_get_len(attributeList);
// handle continuation
if (continuation_offset){
memmove(&sdp_response_buffer[7], &sdp_response_buffer[7+continuation_offset], maximumAttributeByteCount);
pos -= continuation_offset;
}
uint16_t attributeListByteCount = pos - 7;
// Continuation State
if (result >= 0) {
sdp_response_buffer[pos++] = 2;
net_store_16(sdp_response_buffer, pos, (uint16_t) result);
pos += 2;
} else {
if (pos <= 7 + maximumAttributeByteCount) {
// complete
sdp_response_buffer[pos++] = 0;
} else {
pos = 7 + maximumAttributeByteCount;
continuation_offset += maximumAttributeByteCount;
sdp_response_buffer[pos++] = 2;
net_store_16(sdp_response_buffer, pos, (uint16_t) continuation_offset);
pos += 2;
}
// update header
net_store_16(sdp_response_buffer, 3, pos - 5); // size of variable payload
net_store_16(sdp_response_buffer, 5, de_get_len(attributeList));
net_store_16(sdp_response_buffer, 5, attributeListByteCount);
return pos;
}