No able to connect to TiDB

[cleanyong]

21:11:22.300 [error] GenServer #PID<0.241.0> terminating
** (stop) an exception was raised:
** (FunctionClauseError) no function clause matching in :inet_tcp.getserv/1
(kernel) inet_tcp.erl:55: :inet_tcp.getserv("4000")
(kernel) gen_tcp.erl:176: :gen_tcp.connect1/4
(kernel) gen_tcp.erl:163: :gen_tcp.connect/4
(myxql) lib/myxql/client.ex:267: MyXQL.Client.do_connect/1
(myxql) lib/myxql/client.ex:90: MyXQL.Client.connect/1
(myxql) lib/myxql/connection.ex:32: MyXQL.Connection.connect/1
(db_connection) lib/db_connection/connection.ex:82: DBConnection.Connection.connect/2
(connection) lib/connection.ex:622: Connection.enter_connect/5
(stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
(kernel) gen_tcp.erl:168: :gen_tcp.connect/4
(myxql) lib/myxql/client.ex:267: MyXQL.Client.do_connect/1
(myxql) lib/myxql/client.ex:90: MyXQL.Client.connect/1
(myxql) lib/myxql/connection.ex:32: MyXQL.Connection.connect/1
(db_connection) lib/db_connection/connection.ex:82: DBConnection.Connection.connect/2
(connection) lib/connection.ex:622: Connection.enter_connect/5
(stdlib) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Last message: nil
State: MyXQL.Connection
** (Mix) The database for Hello.Repo couldn't be created: %RuntimeError{message: "killed"}

[hassan]

from src:

getserv(Port) when is_integer(Port) -> {ok, Port};

[cleanyong]

My bad, after I changed from "4000" to 4000, it works! thanks a lot :-)