add: Allow specifying target with socketaddress instance

src/net/tcp_client.cpp

@@ -38,6 +38,24 @@ tcp_client::tcp_client(
     // TODO log created client
 }
 
+tcp_client::tcp_client(
+    const destructor_cb_type destructor_cb_,
+    auto_fd &&socket_fd,
+    const socketaddr &peer_address_
+) :
+    connection_client{},
+    destructor_cb(destructor_cb_),
+    peer_address{peer_address_.str()},
+    port{},
+    net_socket(std::forward<auto_fd>(socket_fd)),
+    io{},
+    write_queue{}
+{
+    io.set<tcp_client, &tcp_client::cb_ev>(this);
+    io.start(this->net_socket.get(), ::ev::READ);
+    // TODO log created client
+}
+
 tcp_client::tcp_client(
     const std::string &peer_address_,
     const std::string &service_or_port,

src/net/tcp_client.hpp

@@ -18,6 +18,7 @@
 #include "net/async_fd.hpp"
 #include "net/connection_client.hpp"
 #include "net/ioqueue.hpp"
+#include "net/socketaddress.hpp"
 
 namespace rmrf::net {
 
@@ -41,7 +42,7 @@ public:
 
 private:
     const destructor_cb_type destructor_cb;
-    const std::string peer_address;
+    std::string peer_address;
 
     uint16_t port;
     auto_fd net_socket;
@@ -62,6 +63,18 @@ public:
      */
     tcp_client(const destructor_cb_type destructor_cb_, auto_fd&& socket_fd, std::string peer_address_, uint16_t port_);
 
+    /**
+     * Construct a new TCP client using an already existing socket. This might be particulary useful if you've
+     * got a server and accept incoming connections.
+     *
+     * @brief Connect to a TCP server
+     * @param destructor_cb_ The callback that should be issued when the client closes or looses it's connection
+     * @param socket_fd A file descriptor for an already open socket to be wrapped by this client
+     * @param peer_address_ The address the socket is bound to on the other end of the connection
+     * @param port_ The bound port
+     */
+    tcp_client(const destructor_cb_type destructor_cb_, auto_fd&& socket_fd, const socketaddr& peer_address_);
+
     /**
      * Construct a new TCP client using an address and port pair.
      * @brief Connect to a TCP server