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【WRTnode2R试用体验】随身数据服务器之 libwebsocket

2015-12-10 13:53:02 6470

0 本帖最后由 flyingbing 于 2015-12-11 14:03 编辑 WRTnode2R 使用的Openwrt 系统里面已经整合了各种 lib ，各种小工具。。 openwrt 系统用起来是挺爽的，但是，可折腾性就没那么高了。本文做 gameserver 使用的 libwebsockets也在里面集成，不过不是官方的完整版本。 libwebsockets 同时需要依赖 json-c 以及 openssl（这两个库的配置编译不做介绍）. 最近做的游戏服务器gameserver，由于要用到 http 的长连接，需要用到 websockets，所以自己动手移植 libwebsockets 到wrtnode2r。源码官网在https://libwebsockets.org/index.html 获取libwebsockets源码的途径如下： You can get the latest sources from git git clone git://git.libwebsockets.org/libwebsockets or browse the git repo at http://git.libwebsockets.org/cgi-bin/cgit/libwebsockets/ libwebsockets is also on github at https://github.com/wARMcat/libwebsockets. 本文采用 git clone 方式： chris@RD0326:~/openwrt-wrtnode-github-master/package/libs$ git clone git://git.libwebsockets.org/libwebsockets Cloning into 'libwebsockets'... remote: Counting objects: 6996, done. remote: Compressing objects: 100% (6523/6523), done. remote: Total 6996 (delta 5364), reused 587 (delta 452) Receiving objects: 100% (6996/6996), 4.61 MiB \| 92.00 KiB/s, done. Resolving deltas: 100% (5364/5364), done. Checking connectivity... done. 查看下载的文件： chris@RD0326:~/openwrt-wrtnode-github-master/package/libs/libwebsockets$ ls Android.mk CMakeLists.txt FindLibWebSockets.cmake LICENSE README.build.md scripts appveyor.yml cross-arm-linux-gnueabihf.cmake lib lws_config.h.in README.coding.md test-server changelog cross-ming.cmake libwebsockets-api-doc.html lws_config_private.h.in README.md travis_install.sh cmake cross-openwrt-makefile libwebsockets.spec module.json README.test-apps.md win32port 查看目录结构以及 README.build.md，libwebsockets 采用 cmake 编译方式。 CMake是一个跨平台安装（编译）工具，可以生成适合多种目标平台的编译文件，更多信息请参看http://www.cmake.org。不过你也可以使用如下 Makefile 完成来自动从远程下载源码文件以及编译等任务： # # libwebsockets makefile for openwrt # include $(TOPDIR)/rules.mk PKG_NAME:=libwebsockets PKG_VERSION:=2014-03-01 PKG_RELEASE=$(PKG_SOURCE_VERSION) PKG_SOURCE_PROTO:=git PKG_SOURCE_URL:=https://github.com/warmcat/libwebsockets.git PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION) PKG_SOURCE_VERSION:=388dc7d201d8d123841869fb49ec4d94d6dd7f54 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz CMAKE_INSTALL:=1 include $(INCLUDE_DIR)/package.mk include $(INCLUDE_DIR)/cmake.mk CMAKE_OPTIONS += -DLWS_OPENSSL_CLIENT_CERTS=/etc/ssl/certs CMAKE_OPTIONS += -DLWS_OPENSSL_SUPPORT=ON CMAKE_OPTIONS += -DLWS_WITH_SSL=ON CMAKE_OPTIONS += -DLWS_WITHOUT_TESTAPPS=$(if $(CONFIG_PACKAGE_libwebsockets-examples),"OFF","ON") # for wolfssl, define these in addition to LWS_OPENSSL_SUPPORT and # edit package/libs/wolfssl/Makefile to include --enable-opensslextra # CMAKE_OPTIONS += -DLWS_USE_WOLFSSL=ON # CMAKE_OPTIONS += -DLWS_WOLFSSL_LIBRARIES=$(STAGING_DIR)/usr/lib/libwolfssl.so # CMAKE_OPTIONS += -DLWS_WOLFSSL_INCLUDE_DIRS=$(STAGING_DIR)/usr/include # for cyassl, define these in addition to LWS_OPENSSL_SUPPORT and # edit package/libs/wolfssl/Makefile to include --enable-opensslextra # CMAKE_OPTIONS += -DLWS_USE_CYASSL=ON # CMAKE_OPTIONS += -DLWS_CYASSL_LIBRARIES=$(STAGING_DIR)/usr/lib/libcyassl.so # CMAKE_OPTIONS += -DLWS_CYASSL_INCLUDE_DIRS=$(STAGING_DIR)/usr/include # other options worth noting # CMAKE_OPTIONS += -DLWS_WITHOUT_EXTENSIONS=ON # CMAKE_OPTIONS += -DLWS_WITHOUT_DAEMONIZE=ON # CMAKE_OPTIONS += -DLWS_WITHOUT_SERVER=ON # CMAKE_OPTIONS += -DLWS_WITHOUT_DEBUG=ON define Package/libwebsockets/Default SECTION:=libs CATEGORY:=Libraries TITLE:=libwebsockets DEPENDS:=+zlib +libopenssl endef define Package/libwebsockets $(call Package/libwebsockets/Default) TITLE+= (libraries) endef define Package/libwebsockets/description libwebsockets This package contains libwebsocket libraries endef define Package/libwebsockets-examples $(call Package/libwebsockets/Default) DEPENDS:=libwebsockets TITLE+= (examples) endef define Package/libwebsockets-examples/description libwebsockets examples This package contains libwebsockets examples endef define Package/libwebsockets/install $(INSTALL_DIR) $(1)/usr/lib $(CP) $(PKG_INSTALL_DIR)/usr/lib/libwebsockets.so* $(1)/usr/lib/ endef define Package/libwebsockets-examples/install $(INSTALL_DIR) $(1)/usr/bin # $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libwebsockets-test-client $(1)/usr/bin/ # $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libwebsockets-test-echo $(1)/usr/bin/ # $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libwebsockets-test-fraggle $(1)/usr/bin/ # $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libwebsockets-test-ping $(1)/usr/bin/ $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libwebsockets-test-server $(1)/usr/bin/ # $(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/libwebsockets-test-server-extpoll $(1)/usr/bin/ $(INSTALL_DIR) $(1)/usr/share/libwebsockets-test-server $(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/libwebsockets-test-server/favicon.ico $(1)/usr/share/libwebsockets-test-server/ $(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/libwebsockets-test-server/leaf.jpg $(1)/usr/share/libwebsockets-test-server/ $(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/libwebsockets-test-server/libwebsockets.org-logo.png $(1)/usr/share/libwebsockets-test-server/ $(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/libwebsockets-test-server/libwebsockets-test-server.key.pem $(1)/usr/share/libwebsockets-test-server/ $(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/libwebsockets-test-server/libwebsockets-test-server.pem $(1)/usr/share/libwebsockets-test-server/ $(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/share/libwebsockets-test-server/test.html $(1)/usr/share/libwebsockets-test-server/ endef $(eval $(call BuildPackage,libwebsockets)) $(eval $(call BuildPackage,libwebsockets-examples)) 复制代码或者参照wrtnode2r 的makefile 如下： # # Copyright (C) 2014-2015 OpenWrt.org # # This is free software, licensed under the GNU General Public License v2. # See /LICENSE for more information. # include $(TOPDIR)/rules.mk PKG_NAME:=libwebsockets PKG_VERSION:=1.3-chrome37-firefox30 PKG_RELEASE:=1 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz PKG_SOURCE_PROTO:=git PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION) PKG_SOURCE_URL:=https://github.com/warmcat/libwebsockets.git PKG_SOURCE_VERSION:=v$(PKG_VERSION) PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(BUILD_VARIANT)/$(PKG_SOURCE_SUBDIR) PKG_LICENSE:=LGPL-2.1+exception PKG_LICENSE_FILES:=LICENSE CMAKE_INSTALL:=1 include $(INCLUDE_DIR)/package.mk include $(INCLUDE_DIR)/cmake.mk CMAKE_OPTIONS += $(if $(CONFIG_PACKAGE_kmod-ipv6),,-DLWS_IPV6=) CMAKE_OPTIONS += -DLWS_WITHOUT_TESTAPPS=ON # other options worth noting # CMAKE_OPTIONS += -DLWS_WITHOUT_EXTENSIONS=ON # CMAKE_OPTIONS += -DLWS_WITHOUT_DAEMONIZE=ON # CMAKE_OPTIONS += -DLWS_WITHOUT_SERVER=ON # CMAKE_OPTIONS += -DLWS_WITHOUT_DEBUG=ON define Package/$(PKG_NAME)/Default SECTION:=libs CATEGORY:=Libraries TITLE:=libwebsockets DEPENDS:=+zlib endef define Package/libwebsockets-openssl $(call Package/$(PKG_NAME)/Default) TITLE += (OpenSSL) DEPENDS += +libopenssl VARIANT:=openssl endef define Package/libwebsockets-cyassl $(call Package/$(PKG_NAME)/Default) TITLE += (CyaSSL) DEPENDS += +libcyassl VARIANT:=cyassl endef ifeq ($(BUILD_VARIANT),openssl) CMAKE_OPTIONS += -DLWS_OPENSSL_CLIENT_CERTS=/etc/ssl/certs CMAKE_OPTIONS += -DLWS_OPENSSL_SUPPORT=ON CMAKE_OPTIONS += -DLWS_WITH_SSL=ON endif ifeq ($(BUILD_VARIANT),cyassl) CMAKE_OPTIONS += -DLWS_OPENSSL_CLIENT_CERTS=/etc/ssl/certs CMAKE_OPTIONS += -DLWS_OPENSSL_SUPPORT=ON CMAKE_OPTIONS += -DLWS_WITH_SSL=ON # for cyassl, edit package/libs/cyassl/Makefile to include --enable-opensslextra # NOTE: it will compile without it, untested whether it it's needed?! CMAKE_OPTIONS += -DLWS_USE_CYASSL=ON CMAKE_OPTIONS += -DLWS_CYASSL_LIB=$(STAGING_DIR)/usr/lib/libcyassl.so CMAKE_OPTIONS += -DLWS_CYASSL_INCLUDE_DIRS=$(STAGING_DIR)/usr/include endif define Package/libwebsockets/install $(INSTALL_DIR) $(1)/usr/lib $(CP) $(PKG_INSTALL_DIR)/usr/lib/libwebsockets.so* $(1)/usr/lib/ endef Package/$(PKG_NAME)-cyassl/install = $(Package/$(PKG_NAME)/install) Package/$(PKG_NAME)-openssl/install = $(Package/$(PKG_NAME)/install) $(eval $(call BuildPackage,libwebsockets-openssl)) $(eval $(call BuildPackage,libwebsockets-cyassl)) 复制代码然后执行make menuconfig ----》libraries 编译的时候把示例程序也编进去，在网页输入 127.0.0.1:7681可以看到如下运行效果只需要在任何一个浏览器客户端画图案，该例程会将整个画板传输到其他所有客户端，用这个可以实现类似你画我猜的小游戏。之后就可以根据自己游戏的逻辑，利用这套例程做自己定制的小型游戏服务器。 0
2015-12-10 13:53:02　　评论淘帖0 举报相关推荐 • 【WRTnode2R申请】随身数据服务器及配套网关产品 2349 • 【NanoPi2申请】随身数据服务器 1952 • 【WRTnode2R试用体验】初识WRTnode2R 3318 • 【WRTnode2R试用体验】之WRTnode2R 资料大整合 3778 • 【WRTnode2R申请】数据服务网关项目 1309 • 【WRTnode2R试用体验】WRTnode2R 之 firmware 分区管理 1962 • 【WRTnode2R试用体验】7.搭建音乐服务器MPD 4560 • 【WRTnode2R试用体验】之WRTnode 2R常用命令 2449 • 【WRTnode2R试用体验】之常用工具 3568 • 【WRTnode2R试用体验】交叉編譯之Blink 2695 1 个讨论

0 资源问题，在ubuntu 跑这个例程没有什么延迟，而在wrtnode2r，延迟还是挺大的，有时候，甚至丢失了很多的画板

2015-12-11 13:59:04 评论举报 1^# flyingbing