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Read/Write API #436

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8a70ec3
read/write API for tcp client
PyXiion Jan 25, 2026
c788bdc
Update README tcp example, tests & add docs
PyXiion Jan 25, 2026
db2ef68
Rename make_io_status_poll_status to make_io_status_from_poll_status
PyXiion Jan 26, 2026
f59cd08
udp::peer read/write API
PyXiion Jan 26, 2026
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3 changes: 1 addition & 2 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -170,8 +170,7 @@ if(LIBCORO_FEATURE_NETWORKING)
include/coro/net/connect.hpp src/net/connect.cpp
include/coro/net/hostname.hpp
include/coro/net/ip_address.hpp src/net/ip_address.cpp
include/coro/net/recv_status.hpp src/net/recv_status.cpp
include/coro/net/send_status.hpp src/net/send_status.cpp
include/coro/net/io_status.hpp src/net/io_status.cpp
include/coro/net/socket.hpp src/net/socket.cpp
include/coro/net/tcp/client.hpp src/net/tcp/client.cpp
include/coro/net/tcp/server.hpp src/net/tcp/server.cpp
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424 changes: 278 additions & 146 deletions README.md
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19 changes: 6 additions & 13 deletions examples/coro_tcp_echo_server.cpp
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Expand Up @@ -13,18 +13,11 @@ auto main() -> int
// Wait for data to be available to read.
co_await client.poll(coro::poll_op::read);
auto [rstatus, rspan] = client.recv(buf);
switch (rstatus)
{
case coro::net::recv_status::ok:
// Make sure the client socket can be written to.
co_await client.poll(coro::poll_op::write);
client.send(std::span<const char>{rspan});
break;
case coro::net::recv_status::would_block:
break;
case coro::net::recv_status::closed:
default:
co_return;
if (rstatus.is_ok()) {
co_await client.poll(coro::poll_op::write);
client.send(std::span<const char>{rspan});
} else if (rstatus.is_closed()) {
co_return;
}
}
};
Expand All @@ -40,7 +33,7 @@ auto main() -> int
{
case coro::poll_status::read:
{
auto client = server.accept();
auto client = server.accept_now();
if (client.socket().is_valid())
{
scheduler->spawn_detached(make_on_connection_task(std::move(client)));
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3 changes: 1 addition & 2 deletions include/coro/coro.hpp
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Expand Up @@ -23,8 +23,7 @@
#include "coro/net/connect.hpp"
#include "coro/net/hostname.hpp"
#include "coro/net/ip_address.hpp"
#include "coro/net/recv_status.hpp"
#include "coro/net/send_status.hpp"
#include "coro/net/io_status.hpp"
#include "coro/net/socket.hpp"
#include "coro/net/udp/peer.hpp"
#endif
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50 changes: 50 additions & 0 deletions include/coro/net/io_status.hpp
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@@ -0,0 +1,50 @@
#pragma once

#include "coro/poll.hpp"
#include <cstddef>
#include <string>

namespace coro::net
{

struct io_status
{
enum class kind
{
ok,
closed,
connection_reset,
connection_refused,
timeout,

would_block_or_try_again,
polling_error,
cancelled,

udp_not_bound,
message_to_big,

native
};

kind type{};
int native_code{};

[[nodiscard]] auto is_ok() const -> bool { return type == kind::ok; }
[[nodiscard]] auto is_timeout() const -> bool { return type == kind::timeout; }
[[nodiscard]] auto is_closed() const -> bool { return type == kind::closed; }
[[nodiscard]] auto would_block() const -> bool { return type == kind::would_block_or_try_again; }

[[nodiscard]] auto is_native() const -> bool { return type == kind::native; }

explicit operator bool() const { return is_ok(); }

/**
* Returns a human-readable description of the error.
*/
[[nodiscard]] auto message() const -> std::string;
};

auto make_io_status_from_native(int native_code) -> io_status;
auto make_io_status_from_poll_status(coro::poll_status status) -> io_status;
} // namespace coro::net
32 changes: 0 additions & 32 deletions include/coro/net/recv_status.hpp
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31 changes: 0 additions & 31 deletions include/coro/net/send_status.hpp
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