Linux平台sdp discovery编程

/*
BlueZ example code to read the services of
a remote sdp server.

Programmed by Bastian Ballmann http://www.geektown.de 
Compile with gcc -lbluetooth -lsdp <executable> <source>
*/

#include <bluetooth/sdp.h>
#include <bluetooth/sdp_lib.h>

int main(int argc, char *argv[])
{
bdaddr_t bdaddr;
sdp_list_t *attrid, *search, *seq;
uint32_t range = 0x0000ffff;
sdp_session_t *sess;
struct hci_dev_info di;
uuid_t root_uuid;

if(argc < 2)
{
printf("%s <btaddr>\n", argv[0]);
exit(0);
}

// Get local bluetooth address
if(hci_devinfo(0, &di) < 0)
{
perror("HCI device info failed");
exit(1);
}

str2ba(argv[1],&bdaddr);

// Connect to remote SDP server
sess = sdp_connect(&di.bdaddr, &bdaddr, SDP_RETRY_IF_BUSY);

if(!sess)
{
perror("Failed to connect to SDP server");
exit(1);
}

printf("Browsing %s ...\n", argv[1]);

// Build linked lists
sdp_uuid16_create(&root_uuid, PUBLIC_BROWSE_GROUP);
attrid = sdp_list_append(0, &range);
search = sdp_list_append(0, &root_uuid);

// Get a linked list of services
if(sdp_service_search_attr_req(sess, search, SDP_ATTR_REQ_RANGE, attrid, &seq) < 0)
{
perror("SDP service search");
sdp_close(sess);
exit(1);
}

sdp_list_free(attrid, 0);
sdp_list_free(search, 0);

// Loop through the list of services
for(; seq; seq = seq->next)
{
sdp_record_t *rec = (sdp_record_t *) seq->data;
sdp_list_t *access = NULL;
int channel;

// Print the service name
sdp_record_print(rec);

// Print the RFCOMM channel
sdp_get_access_protos(rec, &access);

if(access)
{
channel = sdp_get_proto_port(access, RFCOMM_UUID);
printf("Channel: %d\n", channel);
}
}

free(seq);
sdp_close(sess);
return 0;
}

# gcc -o sdpbrowse  sdpbrowse.c -lbluetooth

apt-get install libbluetooth-dev bluez-utils