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但现在，我们有了新的解决方案。使用 eBPF 技术，通过其能力在用户空间进行探测，提供了一种方法重新获得明文数据，使得我们可以直观地查看加密前的通信内容。然而，每个应用可能使用不同的库，每个库都有多个版本，这种多样性给跟踪带来了复杂性。
在本教程中，我们将带您了解一种跨多种用户态 SSL/TLS 库的 eBPF 追踪技术，它不仅可以同时跟踪 GnuTLS 和 OpenSSL 等用户态库，而且相比以往，大大降低了对新版本库的维护工作。
在本教程中，我们将带您了解一种跨多种用户态 SSL/TLS 库的 eBPF 追踪技术，它不仅可以同时跟踪 GnuTLS 和 OpenSSL 等用户态库，而且相比以往，大大降低了对新版本库的维护工作。完整的源代码可以在这里查看：<https://github.com/eunomia-bpf/bpf-developer-tutorial/tree/main/src/30-sslsniff>。
## 背景知识

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However, a new solution is now available. Through the use of eBPF technology and its capability to perform probing in user space, a method has emerged to regain plain text data, allowing us to intuitively view the pre-encrypted communication content. Nevertheless, each application might utilize different libraries, and each library comes in multiple versions, introducing complexity to the tracking process.
In this tutorial, we will guide you through an eBPF tracing technique that spans across various user-space SSL/TLS libraries. This technique not only allows simultaneous tracing of user-space libraries like GnuTLS and OpenSSL but also significantly reduces maintenance efforts for new library versions compared to previous methods.
In this tutorial, we will guide you through an eBPF tracing technique that spans across various user-space SSL/TLS libraries. This technique not only allows simultaneous tracing of user-space libraries like GnuTLS and OpenSSL but also significantly reduces maintenance efforts for new library versions compared to previous methods. The complete code for this tutorial can be found in <完整的源代码可以在这里查看：<https://github.com/eunomia-bpf/bpf-developer-tutorial/tree/main/src/30-sslsniff>
## Background Knowledge