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Socket.cpp
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556 lines (487 loc) · 10.5 KB
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#include "Socket.h"
#ifdef POSIX
#include <sys/types.h>
#include <sys/socket.h>
#include <poll.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <unistd.h>
#include <fcntl.h>
#endif
namespace Socket
{
bool Socket::Startup() noexcept
{
#ifdef WIN32
unsigned short version = MAKEWORD(2, 2);
::WSADATA wsaData = {0};
return 0 == ::WSAStartup(version, &wsaData);
#elif POSIX
return true;
#else
#error "Undefined platform"
#endif
}
bool Socket::Cleanup() noexcept
{
#ifdef WIN32
return 0 == ::WSACleanup();
#elif POSIX
return true;
#else
#error "Undefined platform"
#endif
}
int Socket::getLastError() noexcept
{
#ifdef WIN32
return ::WSAGetLastError();
#elif POSIX
return errno;
#else
#error "Undefined platform"
#endif
}
Socket::Socket() noexcept : socket_handle(~0) {}
Socket::Socket(const System::native_socket_type fd) noexcept : socket_handle(fd) {}
Socket::Socket(const Socket &obj) noexcept : socket_handle(obj.socket_handle) {}
Socket::Socket(Socket &&obj) noexcept
: socket_handle(obj.socket_handle)
{
obj.socket_handle = ~0;
}
bool Socket::open() noexcept {
this->close();
this->socket_handle = ::socket(AF_INET, SOCK_STREAM, 0);
return this->is_open();
}
bool Socket::close() noexcept
{
if (this->is_open() )
{
#ifdef WIN32
const int result = ::closesocket(this->socket_handle);
#elif POSIX
const int result = ::close(this->socket_handle);
#else
#error "Undefined platform"
#endif
if (0 == result) {
this->socket_handle = ~0;
return true;
}
}
return false;
}
bool Socket::is_open() const noexcept
{
#ifdef WIN32
return INVALID_SOCKET != this->socket_handle;
#elif POSIX
return ~0 != this->socket_handle;
#else
#error "Undefined platform"
#endif
}
System::native_socket_type Socket::get_handle() const noexcept {
return this->socket_handle;
}
bool Socket::bind(const int port) const noexcept {
// GCC bug with global namespace: https://bbs.archlinux.org/viewtopic.php?id=53751
auto const net_port = htons(static_cast<uint16_t>(port));
auto const net_addr = ::htonl(INADDR_ANY);
const ::sockaddr_in sock_addr {
AF_INET,
net_port,
{ net_addr },
{ 0 } // sin_zero
};
return 0 == ::bind(
this->socket_handle,
reinterpret_cast<const ::sockaddr *>(&sock_addr),
sizeof(::sockaddr_in)
);
}
bool Socket::listen() const noexcept {
return 0 == ::listen(this->socket_handle, SOMAXCONN);
}
Socket Socket::accept() const noexcept
{
#ifdef WIN32
System::native_socket_type client_socket = ::accept(
this->socket_handle,
static_cast<sockaddr *>(nullptr),
static_cast<int *>(nullptr)
);
#elif POSIX
System::native_socket_type client_socket = ::accept(
this->socket_handle,
static_cast<sockaddr *>(nullptr),
static_cast<socklen_t *>(nullptr)
);
#else
#error "Undefined platform"
#endif
return Socket(client_socket);
}
Socket Socket::nonblock_accept() const noexcept
{
System::native_socket_type client_socket = ~0;
#ifdef WIN32
WSAPOLLFD event {
this->socket_handle,
POLLRDNORM,
0
};
if (1 == ::WSAPoll(&event, 1, ~0) && event.revents & POLLRDNORM) {
client_socket = ::accept(
this->socket_handle,
static_cast<sockaddr *>(nullptr),
static_cast<int *>(nullptr)
);
}
#elif POSIX
struct ::pollfd event {
this->socket_handle,
POLLIN,
0
};
if (1 == ::poll(&event, 1, ~0) && event.revents & POLLIN) {
client_socket = ::accept(
this->socket_handle,
static_cast<sockaddr *>(nullptr),
static_cast<socklen_t *>(nullptr)
);
}
#else
#error "Undefined platform"
#endif
return Socket(client_socket);
}
Socket Socket::nonblock_accept(const std::chrono::milliseconds &timeout) const noexcept
{
System::native_socket_type client_socket = ~0;
#ifdef WIN32
WSAPOLLFD event {
this->socket_handle,
POLLRDNORM,
0
};
if (1 == ::WSAPoll(&event, 1, int(timeout.count()) ) && event.revents & POLLRDNORM) {
client_socket = ::accept(
this->socket_handle,
static_cast<sockaddr *>(nullptr),
static_cast<int *>(nullptr)
);
}
#elif POSIX
struct ::pollfd event {
this->socket_handle,
POLLIN,
0
};
if (1 == ::poll(&event, 1, int(timeout.count()) ) && event.revents & POLLIN) {
client_socket = ::accept(
this->socket_handle,
static_cast<sockaddr *>(nullptr),
static_cast<socklen_t *>(nullptr)
);
}
#else
#error "Undefined platform"
#endif
return Socket(client_socket);
}
bool Socket::shutdown() const noexcept
{
if (is_open() )
{
#ifdef WIN32
return 0 == ::shutdown(this->socket_handle, SD_BOTH);
#elif POSIX
return 0 == ::shutdown(this->socket_handle, SHUT_RDWR);
#else
#error "Undefined platform"
#endif
}
return false;
}
bool Socket::nonblock(const bool isNonBlock) const noexcept
{
#ifdef WIN32
unsigned long value = isNonBlock;
return 0 == ::ioctlsocket(
this->socket_handle,
FIONBIO,
&value
);
#elif POSIX
return ~0 != ::fcntl(
this->socket_handle,
F_SETFL,
isNonBlock
? O_NONBLOCK
: O_SYNC
);
#else
#error "Undefined platform"
#endif
}
/*
bool Socket::is_nonblock() const noexcept
{
#ifdef WIN32
#elif POSIX
const int flags = ::fcntl(socket_handle, F_GETFL, 0);
return (flags != ~0) && (flags & O_NONBLOCK);
#else
#error "Undefined platform"
#endif
}
*/
bool Socket::tcp_nodelay(const bool nodelay) const noexcept
{
#ifdef WIN32
int flags = nodelay ? 1 : 0;
return 0 == ::setsockopt(
this->socket_handle,
IPPROTO_TCP,
TCP_NODELAY,
reinterpret_cast<char *>(&flags),
sizeof(flags)
);
#elif POSIX
int flags = nodelay ? 1 : 0;
return 0 == ::setsockopt(
this->socket_handle,
IPPROTO_TCP,
TCP_NODELAY,
&flags,
sizeof(flags)
);
#else
#error "Undefined platform"
#endif
}
long Socket::recv(
std::vector<std::string::value_type> &buf
) const noexcept {
return this->recv(buf.data(), buf.size() );
}
long Socket::recv(
void *buf,
const size_t length
) const noexcept {
#ifdef WIN32
return ::recv(
this->socket_handle,
reinterpret_cast<char *>(buf),
static_cast<const int>(length),
0
);
#elif POSIX
return ::recv(this->socket_handle, buf, length, 0);
#else
#error "Undefined platform"
#endif
}
long Socket::nonblock_recv(
std::vector<std::string::value_type> &buf,
const std::chrono::milliseconds &timeout
) const noexcept {
return this->nonblock_recv(
buf.data(),
buf.size(),
timeout
);
}
long Socket::nonblock_recv(
void *buf,
const size_t length,
const std::chrono::milliseconds &timeout
) const noexcept {
long recv_len = ~0;
#ifdef WIN32
WSAPOLLFD event {
this->socket_handle,
POLLRDNORM,
0
};
if (1 == ::WSAPoll(&event, 1, int(timeout.count()) ) && event.revents & POLLRDNORM) {
recv_len = ::recv(
this->socket_handle,
reinterpret_cast<char *>(buf),
static_cast<const int>(length),
0
);
}
#elif POSIX
struct ::pollfd event {
this->socket_handle,
POLLIN,
0
};
if (1 == ::poll(&event, 1, int(timeout.count()) ) && event.revents & POLLIN) {
recv_len = ::recv(this->socket_handle, buf, length, 0);
}
#else
#error "Undefined platform"
#endif
return recv_len;
}
bool Socket::nonblock_recv_sync(
const std::chrono::milliseconds &timeout
) const noexcept {
#ifdef WIN32
WSAPOLLFD event {
this->socket_handle,
POLLIN,
0
};
return ::WSAPoll(&event, 1, int(timeout.count()) ) == 1;
#elif POSIX
struct ::pollfd event {
this->socket_handle,
POLLIN,
0
};
return ::poll(&event, 1, int(timeout.count()) ) == 1;
#else
#error "Undefined platform"
#endif
}
static long send_all(
const System::native_socket_type socket_handle,
const void *data,
const size_t length
) noexcept {
size_t total = 0;
while (total < length) {
const long send_size = ::send(
socket_handle,
reinterpret_cast<const char *>(data) + total,
length - total,
0
);
if (send_size < 0) {
return send_size;
}
total += size_t(send_size);
}
return static_cast<long>(total);
}
long Socket::send(const std::string &buf) const noexcept {
return this->send(buf.data(), buf.length() );
}
long Socket::send(const void *buf, const size_t length) const noexcept {
return send_all(this->socket_handle, buf, length);
}
static long nonblock_send_all(
const System::native_socket_type socket_handle,
const void *data,
const size_t length,
const std::chrono::milliseconds &timeout
) noexcept {
size_t total = 0;
#ifdef WIN32
WSAPOLLFD event = {
socket_handle,
POLLOUT,
0
};
while (total < length) {
if (1 == ::WSAPoll(&event, 1, int(timeout.count()) ) && event.revents & POLLOUT) {
const long send_size = ::send(
socket_handle,
reinterpret_cast<const char *>(data) + total,
static_cast<const int>(length - total),
0
);
if (send_size < 0) {
return send_size;
}
total += size_t(send_size);
} else {
return -1;
}
}
#elif POSIX
struct ::pollfd event = {
socket_handle,
POLLOUT,
0
};
while (total < length) {
if (1 == ::poll(&event, 1, int(timeout.count()) ) && event.revents & POLLOUT) {
const long send_size = ::send(
socket_handle,
reinterpret_cast<const uint8_t *>(data) + total,
length - total,
0
);
if (send_size < 0) {
return send_size;
}
total += size_t(send_size);
} else {
return -1;
}
}
#else
#error "Undefined platform"
#endif
return long(total);
}
long Socket::nonblock_send(
const std::string &buf,
const std::chrono::milliseconds &timeout
) const noexcept {
return this->nonblock_send(
buf.data(),
buf.length(),
timeout
);
}
long Socket::nonblock_send(
const void *buf,
const size_t length,
const std::chrono::milliseconds &timeout
) const noexcept {
return nonblock_send_all(
this->socket_handle,
buf,
length,
timeout
);
}
void Socket::nonblock_send_sync() const noexcept
{
#ifdef WIN32
WSAPOLLFD event {
this->socket_handle,
POLLOUT,
0
};
::WSAPoll(&event, 1, ~0);
#elif POSIX
struct ::pollfd event {
this->socket_handle,
POLLOUT,
0
};
::poll(&event, 1, ~0);
#else
#error "Undefined platform"
#endif
}
Socket &Socket::operator=(const Socket &obj) noexcept {
this->socket_handle = obj.socket_handle;
return *this;
}
bool Socket::operator ==(const Socket &obj) const noexcept {
return this->socket_handle == obj.socket_handle;
}
bool Socket::operator !=(const Socket &obj) const noexcept {
return this->socket_handle != obj.socket_handle;
}
}