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stream.hpp
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stream.hpp
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#pragma once
#include "handle.hpp"
#include "error.hpp"
#include <algorithm>
namespace uvpp
{
template<typename HANDLE_T>
class stream : public handle<HANDLE_T>
{
protected:
stream():
handle<HANDLE_T>()
{}
public:
bool listen(std::function<void(uvpp::error)> callback, int backlog=128)
{
callbacks::store(handle<HANDLE_T>::get()->data, uvpp::internal::uv_cid_listen, callback);
return uv_listen(handle<HANDLE_T>::template get<uv_stream_t>(), backlog, [](uv_stream_t* s, int status) {
callbacks::invoke<decltype(callback)>(s->data, uvpp::internal::uv_cid_listen, error(status));
}) == 0;
}
bool accept(stream& client)
{
return uv_accept(handle<HANDLE_T>::template get<uv_stream_t>(), client.handle<HANDLE_T>::template get<uv_stream_t>()) == 0;
}
bool read_start(std::function<void(const char* buf, ssize_t len)> callback)
{
return read_start<0>(callback);
}
template<size_t max_alloc_size>
bool read_start(std::function<void(const char* buf, ssize_t len)> callback)
{
callbacks::store(handle<HANDLE_T>::get()->data, uvpp::internal::uv_cid_read_start, callback);
return uv_read_start(handle<HANDLE_T>::template get<uv_stream_t>(),
[](uv_handle_t*, size_t suggested_size, uv_buf_t* buf) {
assert(buf);
auto size = std::max(suggested_size, max_alloc_size);
buf->base = new char[size];
buf->len = size;
},
[](uv_stream_t* s, ssize_t nread, const uv_buf_t* buf) {
// FIXME handle callback throwing exception
if(nread < 0)
{
// FIXME error has nread set to -errno, handle failure
assert(nread == UV_EOF);
callbacks::invoke<decltype(callback)>(s->data, uvpp::internal::uv_cid_read_start, nullptr, nread);
}
else if(nread >= 0)
{
callbacks::invoke<decltype(callback)>(s->data, uvpp::internal::uv_cid_read_start, buf->base, nread);
}
delete buf->base;
}) == 0;
}
bool read_stop()
{
return uv_read_stop(handle<HANDLE_T>::template get<uv_stream_t>()) == 0;
}
bool write(const char* buf, int len, std::function<void(error)> callback)
{
uv_buf_t bufs[] = { uv_buf_t { const_cast<char*>(buf), static_cast<size_t>(len) } };
callbacks::store(handle<HANDLE_T>::get()->data, uvpp::internal::uv_cid_write, callback);
return uv_write(new uv_write_t, handle<HANDLE_T>::template get<uv_stream_t>(), bufs, 1, [](uv_write_t* req, int status) {
callbacks::invoke<decltype(callback)>(req->handle->data, uvpp::internal::uv_cid_write, error(status));
delete req;
}) == 0;
}
bool write(const std::string& buf, std::function<void(error)> callback)
{
uv_buf_t bufs[] = { uv_buf_t { const_cast<char*>(buf.c_str()), buf.length()} };
callbacks::store(handle<HANDLE_T>::get()->data, uvpp::internal::uv_cid_write, callback);
return uv_write(new uv_write_t, handle<HANDLE_T>::template get<uv_stream_t>(), bufs, 1, [](uv_write_t* req, int status) {
callbacks::invoke<decltype(callback)>(req->handle->data, uvpp::internal::uv_cid_write, error(status));
delete req;
}) == 0;
}
bool write(const std::vector<char>& buf, std::function<void(error)> callback)
{
uv_buf_t bufs[] = { uv_buf_t { const_cast<char*>(&buf[0]), buf.size() } };
callbacks::store(handle<HANDLE_T>::get()->data, uvpp::internal::uv_cid_write, callback);
return uv_write(new uv_write_t, handle<HANDLE_T>::template get<uv_stream_t>(), bufs, 1, [](uv_write_t* req, int status) {
callbacks::invoke<decltype(callback)>(req->handle->data, uvpp::internal::uv_cid_write, error(status));
delete req;
}) == 0;
}
bool shutdown(std::function<void(error)> callback)
{
callbacks::store(handle<HANDLE_T>::get()->data, uvpp::internal::uv_cid_shutdown, callback);
return uv_shutdown(new uv_shutdown_t, handle<HANDLE_T>::template get<uv_stream_t>(), [](uv_shutdown_t* req, int status) {
callbacks::invoke<decltype(callback)>(req->handle->data, uvpp::internal::uv_cid_shutdown, error(status));
delete req;
}) == 0;
}
};
}