我的最终目标是将用户的语音输入流式传输到 Android 设备再到桌面应用程序。
对于 Android 设备，显然会运行基于 Java 的 Android 应用程序。对于桌面应用程序，我正在考虑编写一个 Java 小程序来接受流。
这些是维基百科解释的 TCP 和 UDP 的优点和缺点
Transmission Control Protocol is a connection-oriented protocol, which means that it requires handshaking to set up end-to-end communications. Once a connection is set up, user data may be sent bi-directionally over the connection.
Reliable – TCP manages message acknowledgment, retransmission and timeout. Multiple attempts to deliver the message are made. If it gets lost along the way, the server will re-request the lost part. In TCP, there's either no missing data, or, in case of multiple timeouts, the connection is dropped. Ordered – If two messages are sent over a connection in sequence, the first message will reach the receiving application first. When data segments arrive in the wrong order, TCP buffers delay the out-of-order data until all data can be properly re-ordered and delivered to the application. Heavyweight – TCP requires three packets to set up a socket connection, before any user data can be sent. TCP handles reliability and congestion control. Streaming – Data is read as a byte stream, no distinguishing indications are transmitted to signal message (segment) boundaries. User Datagram Protocol is a simpler message-based connectionless protocol. Connectionless protocols do not set up a dedicated end-to-end connection. Communication is achieved by transmitting information in one direction from source to destination without verifying the readiness or state of the receiver.
Unreliable – When a UDP message is sent, it cannot be known if it will reach its destination; it could get lost along the way. There is no concept of acknowledgment, retransmission, or timeout. Not ordered – If two messages are sent to the same recipient, the order in which they arrive cannot be predicted. Lightweight – There is no ordering of messages, no tracking connections, etc. It is a small transport layer designed on top of IP. Datagrams – Packets are sent individually and are checked for integrity only if they arrive. Packets have definite boundaries which are honored upon receipt, meaning a read operation at the receiver socket will yield an entire message as it was originally sent. No congestion control – UDP itself does not avoid congestion. Congestion control measures must be implemented at the application level. Broadcasts - being connectionless, UDP can broadcast - sent packets can be addressed to be receivable by all devices on the subnet.
我希望 Android 将用户的语音流传输到桌面应用程序时不间断且稳定。
除了像维基百科列出的那样简单地考虑两种不同技术的优缺点，在选择技术时我还应该注意什么？
UDP 和 TCP 哪个更好？
最佳答案
在我看来，它还取决于您的项目规范。信号丢失是否可以接受。 UDP 比 TCP 快得多，适合流式传输用户的语音输入。它看起来像传统的电话，有时您会听到一些“噪音”，但通话仍然足够我们使用。此外，使用 TCP 会带来明显的延迟，而 UDP 是为流媒体而生的。
关于java - Android 音频流的 UDP 或 TCP，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35261909/