首页 QT通过UDP分包传输大图像（测试可传6M图片）

QT通过UDP分包传输大图像（测试可传6M图片）

上传者： ljjjjjjjjjjj | 上传时间： 2024-07-16 14:19:19 | 文件大小： 6.82MB | 文件类型： ZIP
udp
在IT领域，尤其是在网络通信和图像处理中，有时我们需要传输大量的数据，比如高分辨率的图像。在这种情况下，由于TCP协议的可靠性和流量控制，可能会导致传输效率低下，特别是在实时性要求较高的场景。这时，我们可以考虑使用UDP（User Datagram Protocol）协议，它提供了更快的数据传输速度，但不保证数据包的顺序和完整性。QT框架提供了一种方便的方式来处理UDP通信，本篇文章将深入探讨如何使用QT通过UDP分包传输大图像。 我们要理解UDP的特点。UDP是一种无连接的协议，每个数据包都独立发送，没有握手过程，也没有错误检测和重传机制。因此，对于大文件或图像的传输，我们需要自己实现这些功能，例如包的分割、重组、错误检测等。 在QT中，我们可以使用`QTcpSocket`的替代——`QUdpSocket`来处理UDP通信。`QUdpSocket`允许我们发送和接收UDP数据包，但不负责数据包的顺序和可靠性。为了传输大图像，我们需要将图像文件拆分成多个小的数据包，并在每个数据包中附加一些额外的信息，如序列号和总包数，以便在接收端重新组装。 发送端的实现： 1. 打开图像文件并读取其内容。 2. 计算图像数据的总大小，确定需要分割的包数量。 3. 对图像数据进行分块，每块不超过UDP的数据包最大限制（通常为64KB）。 4. 为每个数据包添加序列号和总包数信息，可以使用自定义的头部结构。 5. 使用`QUdpSocket`的`writeDatagram()`函数发送每个数据包，目标是接收端的IP地址和端口号。 接收端的实现： 1. 创建一个`QUdpSocket`实例，绑定到本地的特定端口，用于接收数据包。 2. 在接收端，我们需要监听`readyRead()`信号，当有数据到达时，调用`readDatagram()`读取数据包。 3. 解析接收到的数据包，提取序列号、总包数和图像数据。 4. 将接收到的图像数据块按序列号存储，直到收集到所有包。 5. 重组图像数据，根据总包数信息确定原始图像的大小，然后创建一个新的图像文件并写入重组后的数据。 在上述过程中，我们需要注意的是，由于UDP的特性，可能会出现丢包或乱序的情况，所以需要在接收端实现重试和错误检测机制。例如，可以通过设置超时时间，如果在一定时间内没有接收到特定序列号的数据包，可以请求发送端重新发送。此外，还可以使用校验和或者更复杂的错误检测算法（如CRC）来检测数据包在传输过程中是否被破坏。 在提供的压缩包文件中，`QTUDPRecv`和`QTUDPSend`很可能是实现上述功能的源代码示例。分析这两个文件，我们可以深入理解如何在实际项目中应用上述理论知识，进行大图像的UDP分包传输。这不仅有助于提高传输效率，也能帮助我们掌握QT在网络编程中的高级应用。

文件下载

资源详情

[{"title":"（ 118 个子文件 6.82MB ） QT通过UDP分包传输大图像（测试可传6M图片）","children":[{"title":"moc_predefs.h.cbt <span style='color:#111;'> 55B </span>","children":null,"spread":false},{"title":"moc_predefs.h.cbt <span style='color:#111;'> 55B </span>","children":null,"spread":false},{"title":"moc_QTUDPSend.cpp <span style='color:#111;'> 3.75KB </span>","children":null,"spread":false},{"title":"moc_QTUDPRecv.cpp <span style='color:#111;'> 3.58KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.cpp <span style='color:#111;'> 2.98KB </span>","children":null,"spread":false},{"title":"QTUDPSend.cpp <span style='color:#111;'> 2.75KB </span>","children":null,"spread":false},{"title":"qrc_QTUDPRecv.cpp <span style='color:#111;'> 1.38KB </span>","children":null,"spread":false},{"title":"qrc_QTUDPSend.cpp <span style='color:#111;'> 1.38KB </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 289B </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 287B </span>","children":null,"spread":false},{"title":"QTUDPSend.exe <span style='color:#111;'> 137.00KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.exe <span style='color:#111;'> 128.50KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.vcxproj.filters <span style='color:#111;'> 1.66KB </span>","children":null,"spread":false},{"title":"QTUDPSend.vcxproj.filters <span style='color:#111;'> 1.66KB </span>","children":null,"spread":false},{"title":"qtvars.vcxproj.filters <span style='color:#111;'> 493B </span>","children":null,"spread":false},{"title":"qtvars.vcxproj.filters <span style='color:#111;'> 493B </span>","children":null,"spread":false},{"title":"ui_QTUDPSend.h <span style='color:#111;'> 5.20KB </span>","children":null,"spread":false},{"title":"ui_QTUDPRecv.h <span style='color:#111;'> 4.21KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.h <span style='color:#111;'> 813B </span>","children":null,"spread":false},{"title":"QTUDPSend.h <span style='color:#111;'> 701B </span>","children":null,"spread":false},{"title":"91E63DFC-F182-4DA4-A5CC-BEE6A7C3019A.QTUDPRecv.designtime.idx <span style='color:#111;'> 66B </span>","children":null,"spread":false},{"title":"673869FF-FD3A-4EB8-B215-1C3C84667028.QTUDPSend.designtime.idx <span style='color:#111;'> 66B </span>","children":null,"spread":false},{"title":"QTUDPSend.ilk <span style='color:#111;'> 1.71MB </span>","children":null,"spread":false},{"title":"QTUDPRecv.ilk <span style='color:#111;'> 1.50MB </span>","children":null,"spread":false},{"title":"Screenshot_20210312_184055_edit_278823513473599.jpg <span style='color:#111;'> 148.85KB </span>","children":null,"spread":false},{"title":"图标.jpg <span style='color:#111;'> 74.39KB </span>","children":null,"spread":false},{"title":"图标2.jpg <span style='color:#111;'> 71.67KB </span>","children":null,"spread":false},{"title":"roll.jpg <span style='color:#111;'> 21.92KB </span>","children":null,"spread":false},{"title":"u=2839553850,967139000&fm=26&gp=0.jpg <span style='color:#111;'> 16.96KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.lastbuildstate <span style='color:#111;'> 221B </span>","children":null,"spread":false},{"title":"QTUDPSend.lastbuildstate <span style='color:#111;'> 221B </span>","children":null,"spread":false},{"title":"qt_work.log <span style='color:#111;'> 1.86KB </span>","children":null,"spread":false},{"title":"qt_work.log <span style='color:#111;'> 1.82KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.log <span style='color:#111;'> 116B </span>","children":null,"spread":false},{"title":"QTUDPSend.log <span style='color:#111;'> 116B </span>","children":null,"spread":false},{"title":"qtvars.log <span style='color:#111;'> 111B </span>","children":null,"spread":false},{"title":"qtvars.log <span style='color:#111;'> 111B </span>","children":null,"spread":false},{"title":"qt.natvis <span style='color:#111;'> 38.54KB </span>","children":null,"spread":false},{"title":"qt.natvis <span style='color:#111;'> 38.54KB </span>","children":null,"spread":false},{"title":"QTUDPSend.obj <span style='color:#111;'> 358.35KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.obj <span style='color:#111;'> 339.85KB </span>","children":null,"spread":false},{"title":"moc_QTUDPRecv.obj <span style='color:#111;'> 101.40KB </span>","children":null,"spread":false},{"title":"moc_QTUDPSend.obj <span style='color:#111;'> 100.41KB </span>","children":null,"spread":false},{"title":"main.obj <span style='color:#111;'> 98.52KB </span>","children":null,"spread":false},{"title":"main.obj <span style='color:#111;'> 97.39KB </span>","children":null,"spread":false},{"title":"qrc_QTUDPRecv.obj <span style='color:#111;'> 6.40KB </span>","children":null,"spread":false},{"title":"qrc_QTUDPSend.obj <span style='color:#111;'> 6.40KB </span>","children":null,"spread":false},{"title":"QTUDPSend.pdb <span style='color:#111;'> 2.48MB </span>","children":null,"spread":false},{"title":"QTUDPRecv.pdb <span style='color:#111;'> 2.46MB </span>","children":null,"spread":false},{"title":"vc141.pdb <span style='color:#111;'> 1.73MB </span>","children":null,"spread":false},{"title":"vc141.pdb <span style='color:#111;'> 1.65MB </span>","children":null,"spread":false},{"title":"20210204183809.png <span style='color:#111;'> 775.63KB </span>","children":null,"spread":false},{"title":"20210204192405.png <span style='color:#111;'> 749.37KB </span>","children":null,"spread":false},{"title":"20210204184210.png <span style='color:#111;'> 441.58KB </span>","children":null,"spread":false},{"title":"20210204191506.png <span style='color:#111;'> 397.92KB </span>","children":null,"spread":false},{"title":"相机角度.png <span style='color:#111;'> 388.48KB </span>","children":null,"spread":false},{"title":"20210204191648.png <span style='color:#111;'> 312.35KB </span>","children":null,"spread":false},{"title":"20210204190820.png <span style='color:#111;'> 276.87KB </span>","children":null,"spread":false},{"title":"20210204191756.png <span style='color:#111;'> 232.18KB </span>","children":null,"spread":false},{"title":"899@YQ0B}TC$_VG)_O]ATJW.png <span style='color:#111;'> 51.71KB </span>","children":null,"spread":false},{"title":"飞机模型.png <span style='color:#111;'> 29.45KB </span>","children":null,"spread":false},{"title":"qtvars.pro <span style='color:#111;'> 66B </span>","children":null,"spread":false},{"title":"qtvars.pro <span style='color:#111;'> 62B </span>","children":null,"spread":false},{"title":"qtvars_x64_Debug.props <span style='color:#111;'> 4.80KB </span>","children":null,"spread":false},{"title":"qtvars_x64_Debug.props <span style='color:#111;'> 4.80KB </span>","children":null,"spread":false},{"title":"qtvars_x64_Debug.props <span style='color:#111;'> 4.67KB </span>","children":null,"spread":false},{"title":"qtvars_x64_Debug.props <span style='color:#111;'> 4.67KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.qrc <span style='color:#111;'> 69B </span>","children":null,"spread":false},{"title":"QTUDPSend.qrc <span style='color:#111;'> 69B </span>","children":null,"spread":false},{"title":"QTUDPRecv.sln <span style='color:#111;'> 1.05KB </span>","children":null,"spread":false},{"title":"QTUDPSend.sln <span style='color:#111;'> 1.05KB </span>","children":null,"spread":false},{"title":".qmake.stash <span style='color:#111;'> 216B </span>","children":null,"spread":false},{"title":".qmake.stash <span style='color:#111;'> 216B </span>","children":null,"spread":false},{"title":"CL.read.1.tlog <span style='color:#111;'> 132.94KB </span>","children":null,"spread":false},{"title":"CL.read.1.tlog <span style='color:#111;'> 130.49KB </span>","children":null,"spread":false},{"title":"QTUDPSend.write.1u.tlog <span style='color:#111;'> 20.45KB </span>","children":null,"spread":false},{"title":"CL.command.1.tlog <span style='color:#111;'> 9.79KB </span>","children":null,"spread":false},{"title":"CL.command.1.tlog <span style='color:#111;'> 9.16KB </span>","children":null,"spread":false},{"title":"QTUDPRecv.write.1u.tlog <span style='color:#111;'> 7.76KB </span>","children":null,"spread":false},{"title":"link.read.1.tlog <span style='color:#111;'> 4.89KB </span>","children":null,"spread":false},{"title":"link.read.1.tlog <span style='color:#111;'> 4.78KB </span>","children":null,"spread":false},{"title":"link.delete.1.tlog <span style='color:#111;'> 4.60KB </span>","children":null,"spread":false},{"title":"link.command.1.tlog <span style='color:#111;'> 2.91KB </span>","children":null,"spread":false},{"title":"link.command.1.tlog <span style='color:#111;'> 2.79KB </span>","children":null,"spread":false},{"title":"CL.write.1.tlog <span style='color:#111;'> 2.59KB </span>","children":null,"spread":false},{"title":"CL.write.1.tlog <span style='color:#111;'> 2.59KB </span>","children":null,"spread":false},{"title":"link.122136.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.118000.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.115048.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.125484.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.115332.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.39608.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.62724.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.124468.delete.1.tlog <span style='color:#111;'> 1.21KB </span>","children":null,"spread":false},{"title":"link.write.1.tlog <span style='color:#111;'> 994B </span>","children":null,"spread":false},{"title":"link.write.1.tlog <span style='color:#111;'> 994B </span>","children":null,"spread":false},{"title":"rcc.write.1u.tlog <span style='color:#111;'> 300B </span>","children":null,"spread":false},{"title":"rcc.write.1u.tlog <span style='color:#111;'> 300B </span>","children":null,"spread":false},{"title":"moc.write.1u.tlog <span style='color:#111;'> 296B </span>","children":null,"spread":false},{"title":"moc.write.1u.tlog <span style='color:#111;'> 296B </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]

评论信息

其他资源

免责申明

【只为小站】的资源来自网友分享，仅供学习研究，请务必在下载后24小时内给予删除，不得用于其他任何用途，否则后果自负。基于互联网的特殊性，【只为小站】 无法对用户传输的作品、信息、内容的权属或合法性、合规性、真实性、科学性、完整权、有效性等进行实质审查；无论 【只为小站】 经营者是否已进行审查，用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。
本站所有资源不代表本站的观点或立场，基于网友分享，根据中国法律《信息网络传播权保护条例》第二十二条之规定，若资源存在侵权或相关问题请联系本站客服人员，zhiweidada#qq.com，请把#换成@，本站将给予最大的支持与配合，做到及时反馈和处理。关于更多版权及免责申明参见 版权及免责申明

个人信息

下载历史

相关资源标签

热门下载

最新下载