MSGLEN
char buf[MSGLEN] = MSG;
err = write(test_case->clients[i], buf, MSGLEN);
if (!ASSERT_EQ(err, MSGLEN, "write"))
char buf[MSGLEN];
memset(buf, 0, MSGLEN);
read(client, &buf, MSGLEN);
.iov_len = MSGLEN,
ASSERT_EQ(MSGLEN, ret);