add client

Signed-off-by: Lizzy Fleckenstein <lizzy@vlhl.dev>

1 files changed, 51 insertions, 0 deletions

diff --git a/include/net.h b/include/net.h
new file mode 100644
index 0000000..fcb12a4
--- /dev/null
+++ b/include/net.h
@@ -0,0 +1,51 @@
+// SPDX-FileCopyrightText: 2024 Lizzy Fleckenstein <lizzy@vlhl.dev>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+#ifndef NET_H
+#define NET_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <poll.h>
+#include <fcntl.h>
+
+#include "str.h"
+
+#define SET_NONBLOCK(X) fcntl((X), F_SETFL, fcntl((X), F_GETFL, 0) | O_NONBLOCK)
+
+#define PEER_INBUFFER_SIZE 0x100000 // 1MB
+#define PEER_OUTBUFFER_SIZE 0x200000 // 2MB
+
+typedef uint32_t pkt_header;
+
+typedef struct {
+	int socket;
+	bool disco;
+	struct {
+		bool header;
+		size_t len;
+		size_t promised;
+		uint8_t *buffer;
+	} in;
+	// TODO: ring buffer
+	struct {
+		size_t avail;
+		size_t cursor;
+		uint8_t *buffer;
+	} out;
+} peer;
+
+void invalid_pkt(str from, str pkt);
+
+int socket_create(const char *host, const char *port, bool server);
+int socket_accept(int accept_fd);
+
+void peer_init(peer *p, int socket);
+void peer_free(peer *p);
+struct pollfd peer_prepare(peer *p);
+str peer_recv(peer *p, struct pollfd pfd);
+bool peer_send(peer *p, void *data, size_t len);
+
+#endif