fix: myself. need smaller commits

helpers/open_tcp_connection.cc

@@ -0,0 +1,33 @@
+#include <helpers.h>
+#include <netdb.h>
+#include <trantor/utils/Logger.h>
+
+int
+helpers::open_tcp_connection(char *host, char *port)
+{
+    int s, status;
+    struct addrinfo hints{}, *res;
+    memset(&hints, 0, sizeof hints);
+    hints.ai_family = AF_INET;
+    hints.ai_socktype = SOCK_STREAM;
+
+    if ((status = getaddrinfo(host, port, &hints, &res)) != 0)
+    {
+        LOG_ERROR << "Error getting addressinfo: " << gai_strerror(status);
+        freeaddrinfo(res);
+        return 0;
+    }
+
+    s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); //creating Socket
+
+    if ((status = connect(s, res->ai_addr, res->ai_addrlen)) != 0)
+    {
+        LOG_ERROR << "Error opening connection";
+        freeaddrinfo(res);
+        return 0;
+    }
+
+    freeaddrinfo(res);
+
+    return s;
+}