在Erlang中通过tcp套接字发送元组

Question

我试图使用tcp套接字发送元组，我使用gen_tcp：send（Socket，{elem1，elem2}）但我收到此错误，＆＃34;输出端口上的错误值＆t; tcp_inet＆＃39; ＆＃34;任何人都可以告诉我如何通过套接字发送元组？

感谢您的回复。

Answer 1

第二个参数必须是数据包：

Packet = string() | binary() | HttpPacket

HttpPacket = HttpRequest
           | HttpResponse
           | HttpHeader
           | http_eoh
           | HttpError
HttpRequest = {http_request, HttpMethod, HttpUri, HttpVersion}
HttpResponse =
    {http_response, HttpVersion, integer(), HttpString}
HttpHeader =
    {http_header,
     integer(),
     HttpField,
     Reserved :: term(),
     Value :: HttpString}
...

在你的情况下{elem1,elem2}确实匹配任何这些类型，你就会收到错误。发送任意术语的常用方法是首先序列化它：term_to_binary(YourTerm)

并在收到后对其进行反序列化：binary_to_term(ReceivedBinary)