fix: don't ignore all but the first resolved socket addresses

Summary

• fix: don't ignore all but the first resolved socket addresses

Close #193 (closed)

This bug was introduced during refactoring when the non-blocking tcp connect was introduced.

Ensure that

• New code is covered by tests
• API is documented
• Changelog is up to date
• Version is bumped in the appropriate Cargo.toml files

tests/run_tests.lua

@@ -7,17 +7,18 @@ local log = require('log')
 
 local tmpdir = fio.tempdir()
 
-local cwd = fio.cwd()
-log.info("cwd: %s", cwd)
-for _, f in pairs(fio.listdir(cwd)) do
-    log.info("%s", f)
+-- Change current working directory into the one this file is in
+local current_file = debug.getinfo(1).source
+while current_file:sub(1, 1) == '@' do
+    current_file = current_file:sub(2)
 end
+local current_dir = fio.dirname(current_file)
+fio.chdir(current_dir)
 
 box.cfg{
     log_level = 'verbose',
     listen = 'localhost:0',
     wal_mode = 'none',
-    work_dir = tmpdir,
     memtx_dir = tmpdir,
 }