feat: add C & Zig bindings for tcp connector and acceptor

include/thespian/c/tcp.h

@@ -0,0 +1,31 @@
+#pragma once
+
+// NOLINTBEGIN(modernize-use-trailing-return-type)
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <inttypes.h>
+#include <netinet/in.h>
+#include <stdint.h>
+
+struct thespian_tcp_acceptor_handle;
+struct thespian_tcp_acceptor_handle *
+thespian_tcp_acceptor_create(const char *tag);
+uint16_t thespian_tcp_acceptor_listen(struct thespian_tcp_acceptor_handle *,
+                                      struct in6_addr ip, uint16_t port);
+int thespian_tcp_acceptor_close(struct thespian_tcp_acceptor_handle *);
+void thespian_tcp_acceptor_destroy(struct thespian_tcp_acceptor_handle *);
+
+struct thespian_tcp_connector_handle;
+struct thespian_tcp_connector_handle *
+thespian_tcp_connector_create(const char *tag);
+int thespian_tcp_connector_connect(struct thespian_tcp_connector_handle *,
+                                   struct in6_addr ip, uint16_t port);
+int thespian_tcp_connector_cancel(struct thespian_tcp_connector_handle *);
+void thespian_tcp_connector_destroy(struct thespian_tcp_connector_handle *);
+
+#ifdef __cplusplus
+}
+#endif
+// NOLINTEND(modernize-use-trailing-return-type)

include/thespian/tcp.hpp

@@ -49,4 +49,15 @@ struct connector {
   connector_ref ref;
 };
 
+// C++ helpers used by the C binding layer
+
+auto acceptor_listen(acceptor_impl *h, const in6_addr &ip, port_t port)
+    -> port_t;
+void acceptor_close(acceptor_impl *h);
+void destroy_acceptor(acceptor_impl *h);
+
+void connector_connect(connector_impl *h, const in6_addr &ip, port_t port);
+void connector_cancel(connector_impl *h);
+void destroy_connector(connector_impl *h);
+
 } // namespace thespian::tcp