Is it rude for a dinner guest to refuse eating the meal if they are vegetarian and the food served has meat?

a good host would accept the fact you are vegetarian and not make an issue of it. they will be happy to know so the next time you are over they might make something more for you to eat, but will be ok with whats at the table now. that was rude of them to bring you chicken broth and tell you to eat it. and i agree it is also rude to inform them before the meal that you are vegetarian. this would seem to me like you would be asking them to make you something special. it is kind of difficult situation when this happens but you are gracious in telling them you are fine with what is served and will eat what you can.