stream_socket.cpp
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#include "socket-cpp/stream_socket.h"
#include "socket-cpp/exception.h"
#include <algorithm>
#include <memory>
using namespace std::chrono;
using namespace osdev::components::socket-cpp;
stream_socket stream_socket::create(int domain, int protocol /*=0*/)
{
stream_socket sock(::socket(domain, COMM_TYPE, protocol));
if (!sock)
sock.clear(get_last_error());
return sock;
}
ssize_t stream_socket::read(void *buf, size_t n)
{
#if defined(_WIN32)
return check_ret(::recv(handle(), reinterpret_cast<char*>(buf),
int(n), 0));
#else
return check_ret(::recv(handle(), buf, n, 0));
#endif
}
ssize_t stream_socket::read_n(void *buf, size_t n)
{
size_t nr = 0;
ssize_t nx = 0;
uint8_t *b = reinterpret_cast<uint8_t*>(buf);
while (nr < n) {
if ((nx = read(b+nr, n-nr)) < 0 && last_error() == EINTR)
continue;
if (nx <= 0)
break;
nr += nx;
}
return (nr == 0 && nx < 0) ? nx : ssize_t(nr);
}
ssize_t stream_socket::read(const std::vector<iovec>& ranges)
{
if (ranges.empty())
return 0;
#if !defined(_WIN32)
return check_ret(::readv(handle(), ranges.data(), int(ranges.size())));
#else
std::vector<WSABUF> bufs;
for (const auto& iovec : ranges) {
bufs.push_back({
static_cast<ULONG>(iovec.iov_len),
static_cast<CHAR*>(iovec.iov_base)
});
}
DWORD flags = 0,
nread = 0,
nbuf = DWORD(bufs.size());
auto ret = check_ret(::WSARecv(handle(), bufs.data(), nbuf, &nread, &flags, nullptr, nullptr));
return ssize_t(ret == SOCKET_ERROR ? ret : nread);
#endif
}
bool stream_socket::read_timeout(const microseconds& to)
{
auto tv =
#if defined(_WIN32)
DWORD(duration_cast<milliseconds>(to).count());
#else
to_timeval(to);
#endif
return set_option(SOL_SOCKET, SO_RCVTIMEO, tv);
}
ssize_t stream_socket::write(const void *buf, size_t n)
{
#if defined(_WIN32)
return check_ret(::send(handle(), reinterpret_cast<const char*>(buf),
int(n) , 0));
#else
return check_ret(::send(handle(), buf, n , 0));
#endif
}
ssize_t stream_socket::write_n(const void *buf, size_t n)
{
size_t nw = 0;
ssize_t nx = 0;
const uint8_t *b = reinterpret_cast<const uint8_t*>(buf);
while (nw < n) {
if ((nx = write(b+nw, n-nw)) < 0 && last_error() == EINTR)
continue;
if (nx <= 0)
break;
nw += nx;
}
return (nw == 0 && nx < 0) ? nx : ssize_t(nw);
}
ssize_t stream_socket::write(const std::vector<iovec>& ranges)
{
if (ranges.empty())
return 0;
#if !defined(_WIN32)
return check_ret(::writev(handle(), ranges.data(), int(ranges.size())));
#else
std::vector<WSABUF> bufs;
for (const auto& iovec : ranges) {
bufs.push_back({
static_cast<ULONG>(iovec.iov_len),
static_cast<CHAR*>(iovec.iov_base)
});
}
DWORD nwritten = 0,
nmsg = DWORD(bufs.size());
auto ret = check_ret(::WSASend(handle(), bufs.data(), nmsg, &nwritten, 0, nullptr, nullptr));
return ssize_t(ret == SOCKET_ERROR ? ret : nwritten);
#endif
}
bool stream_socket::write_timeout(const microseconds& to)
{
auto tv =
#if defined(_WIN32)
DWORD(duration_cast<milliseconds>(to).count());
#else
to_timeval(to);
#endif
return set_option(SOL_SOCKET, SO_SNDTIMEO, tv);
}