@Override
    public void onChatMessage(final ChatMessageServerPacket vChatMessageServerPacket2) {
        NetworkThreadUtils.<ServerPlayNetworkHandler>forceMainThread((Packet<ServerPlayNetworkHandler>)vChatMessageServerPacket2, this, this.player.getServerWorld());
        if (this.player.getClientChatVisibility() == PlayerEntity.ChatVisibility.HIDDEN) {
            this.sendPacket(new ChatMessageClientPacket(new TranslatableTextComponent("chat.cannotSend", new Object[0]).applyFormat(TextFormat.RED)));
            return;
        }
        this.player.z();
        String vString3 = vChatMessageServerPacket2.getChatMessage();
        vString3 = StringUtils.normalizeSpace(vString3);
        for (int vInteger4 = 0; vInteger4 < vString3.length(); ++vInteger4) {
            if (!SharedConstants.isValidChar(vString3.charAt(vInteger4))) {
                this.disconnectWithReason(new TranslatableTextComponent("multiplayer.disconnect.illegal_characters", new Object[0]));
                return;
            }
        }
        if (vString3.startsWith("/")) {
            this.executeCommand(vString3);
        }
        else {
            final TextComponent vTextComponent4 = new TranslatableTextComponent("chat.type.text", new Object[] { this.player.getDisplayName(), vString3 });
            this.server.getConfigurationManager().broadcastChatMessage(vTextComponent4, false);
        }
        this.i += 20;
        if (this.i > 200 && !this.server.getConfigurationManager().isOperator(this.player.getGameProfile())) {
            this.disconnectWithReason(new TranslatableTextComponent("disconnect.spam", new Object[0]));
        }
    }