如何让emacs支持datagram?

henryt · 2018 年8 月 31 日 02:30

环境: Emacs-modified-windows (25.2.1 x86_64-w64-mingw32)

要在emacs里操作其他程序，想通过UDP发包来实现。但是遇到了这个情况:

(make-network-process
  :name "test-udp-client"
  :type 'datagram
  :host "127.0.0.1"
  :port 12345
  )

报错:

eval: Unsupported connection type

有什么办法开启这功能呢？

LdBeth · 2018 年8 月 31 日 04:05

make-network-process 沒有 :port 参数，port number 用 :service 指定。

henryt · 2018 年8 月 31 日 04:45

确实没有:port …
这个错误倒纯粹是因为某宏没定义，难道要自己编译了

github.com

emacs-mirror/emacs/blob/master/src/process.c#L3890


      
          :keepalive BOOL    -- Send keep-alive messages on network stream.
          :linger BOOL or TIMEOUT -- Send queued messages before closing.
          :oobinline BOOL    -- Place out-of-band data in receive data stream.
          :priority INT      -- Set protocol defined priority for sent packets.
          :reuseaddr BOOL    -- Allow reusing a recently used local address
                                (this is allowed by default for a server process).
          :bindtodevice NAME -- bind to interface NAME.  Using this may require
                                special privileges on some systems.
          :use-external-socket BOOL -- Use any pre-allocated sockets that have
                                       been passed to Emacs.  If Emacs wasn't
                                       passed a socket, this option is silently
                                       ignored.
          
          

          
Consult the relevant system programmer's manual pages for more
          information on using these options.
          
          

          
A server process will listen for and accept connections from clients.
          When a client connection is accepted, a new network process is created
          for the connection with the following parameters:

henryt · 2018 年8 月 31 日 04:52

官网包也不支持datagram，很可能我也编不出来。TCP能用，换上脱坑~