void file_socket::handle_msg(out_msg_ctype& msg)
{
if (msg.size() <= ORDER_LEN)
{
printf("wrong order length: " size_t_format ".\n", msg.size());
return;
}
switch (*msg.data())
{
case 0:
if (TRANS_IDLE == state)
{
trans_end();
char buffer[ORDER_LEN + DATA_LEN];
*buffer = 0; //head
file = fopen(boost::next(msg.data(), ORDER_LEN), "rb");
if (NULL != file)
{
fseeko64(file, 0, SEEK_END);
__off64_t length = ftello64(file);
memcpy(boost::next(buffer, ORDER_LEN), &length, DATA_LEN);
state = TRANS_PREPARE;
}
else
{
memset(boost::next(buffer, ORDER_LEN), -1, DATA_LEN);
printf("can't not open file %s!\n", boost::next(msg.data(), ORDER_LEN));
}
send_msg(buffer, sizeof(buffer), true);
}
break;
case 1:
if (TRANS_PREPARE == state && NULL != file && ORDER_LEN + OFFSET_LEN + DATA_LEN == msg.size())
{
__off64_t offset;
memcpy(&offset, boost::next(msg.data(), ORDER_LEN), OFFSET_LEN);
__off64_t length;
memcpy(&length, boost::next(msg.data(), ORDER_LEN + OFFSET_LEN), DATA_LEN);
if (offset >= 0 && length > 0 && offset + length <= ftello64(file))
{
state = TRANS_BUSY;
fseeko64(file, offset, SEEK_SET);
direct_send_msg(replaceable_buffer(boost::make_shared<file_buffer>(file, length)), true);
}
}
break;
case 2:
printf("client says: %s\n", boost::next(msg.data(), ORDER_LEN));
break;
default:
break;
}
}
void file_socket::handle_msg(const file_buffer& str)
{
if (str.size() <= ORDER_LEN)
{
printf("wrong order length: " size_t_format ".\n", str.size());
return;
}
switch (*str.data())
{
case 0:
if (TRANS_IDLE == state)
{
trans_end();
char buffer[ORDER_LEN + DATA_LEN];
*buffer = 0; //head
file = fopen(std::next(str.data(), ORDER_LEN), "rb");
if (nullptr != file)
{
fseeko64(file, 0, SEEK_END);
auto length = ftello64(file);
memcpy(std::next(buffer, ORDER_LEN), &length, DATA_LEN);
state = TRANS_PREPARE;
}
else
{
*(__off64_t*) std::next(buffer, ORDER_LEN) = -1;
printf("can't not open file %s!\n", std::next(str.data(), ORDER_LEN));
}
send_msg(buffer, sizeof(buffer), true);
}
break;
case 1:
if (TRANS_PREPARE == state && nullptr != file && ORDER_LEN + OFFSET_LEN + DATA_LEN == str.size())
{
auto offset = *(__off64_t*) std::next(str.data(), ORDER_LEN);
auto length = *(__off64_t*) std::next(str.data(), ORDER_LEN + OFFSET_LEN);
if (offset >= 0 && length > 0 && offset + length <= ftello64(file))
{
state = TRANS_BUSY;
direct_send_msg(file_buffer(boost::make_shared<data_buffer>(file, offset, length)), true);
}
}
break;
case 2:
printf("client says: %s\n", std::next(str.data(), ORDER_LEN));
break;
default:
break;
}
}
void file_socket::on_msg_send(in_msg_type& msg)
{
BOOST_AUTO(buffer, boost::dynamic_pointer_cast<file_buffer>(msg.raw_buffer()));
if (NULL != buffer)
{
buffer->read();
if (buffer->empty())
trans_end();
else
direct_send_msg(msg, true);
}
}
void file_socket::on_msg_send(file_buffer& msg)
{
auto buffer = boost::dynamic_pointer_cast<data_buffer>(msg.raw_buffer());
if (nullptr != buffer)
{
buffer->read();
if (buffer->empty())
trans_end();
else
direct_send_msg(msg, true);
}
}