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recv discovery packets with max size buffer (we dont know what to expect)

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This commit is contained in:
Josh Blum 2010-06-04 12:00:23 -07:00
parent b2054a45d4
commit dbc65d9283
1 changed files with 5 additions and 4 deletions
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9
host/lib/usrp/usrp2/usrp2_impl.cpp
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@ -76,16 +76,17 @@ uhd::device_addrs_t usrp2::find(const device_addr_t &hint){
udp_transport->send(boost::asio::buffer(&ctrl_data_out, sizeof(ctrl_data_out)));
//loop and recieve until the timeout
boost::uint8_t usrp2_ctrl_data_in_mem[1500]; //allocate MTU bytes for recv
usrp2_ctrl_data_t *ctrl_data_in = reinterpret_cast<usrp2_ctrl_data_t *>(usrp2_ctrl_data_in_mem);
while(true){
usrp2_ctrl_data_t ctrl_data_in;
size_t len = udp_transport->recv(asio::buffer(&ctrl_data_in, sizeof(ctrl_data_in)));
size_t len = udp_transport->recv(asio::buffer(usrp2_ctrl_data_in_mem));
//std::cout << len << "\n";
if (len >= sizeof(usrp2_ctrl_data_t)){
//handle the received data
switch(ntohl(ctrl_data_in.id)){
switch(ntohl(ctrl_data_in->id)){
case USRP2_CTRL_ID_WAZZUP_DUDE:
//make a boost asio ipv4 with the raw addr in host byte order
boost::asio::ip::address_v4 ip_addr(ntohl(ctrl_data_in.data.ip_addr));
boost::asio::ip::address_v4 ip_addr(ntohl(ctrl_data_in->data.ip_addr));
device_addr_t new_addr;
new_addr["name"] = "USRP2";
new_addr["addr"] = ip_addr.to_string();