bool AbstractCarrier::defaultSendAck(ConnectionState& proto) {
YARP_DEBUG(Logger::get(),"sending an acknowledgment");
if (proto.getConnection().requireAck()) {
writeYarpInt(0,proto);
}
return true;
}
bool AbstractCarrier::sendConnectionStateSpecifier(ConnectionState& proto) {
char buf[8];
Bytes header((char*)&buf[0],sizeof(buf));
OutputStream& os = proto.os();
proto.getConnection().getHeader(header);
os.write(header);
os.flush();
return os.isOk();
}
bool AbstractCarrier::defaultExpectAck(ConnectionState& proto) {
if (proto.getConnection().requireAck()) {
char buf[8];
Bytes header((char*)&buf[0],sizeof(buf));
YARP_SSIZE_T hdr = proto.is().readFull(header);
if ((size_t)hdr!=header.length()) {
YARP_DEBUG(proto.getLog(),"did not get acknowledgement header");
return false;
}
int len = interpretYarpNumber(header);
if (len<0) {
YARP_DEBUG(proto.getLog(),"acknowledgement header is bad");
return false;
}
size_t len2 = proto.is().readDiscard(len);
if ((size_t)len!=len2) {
YARP_DEBUG(proto.getLog(),"did not get an acknowledgement of the promised length");
return false;
}
}
return true;
}
