HTTP是否有GET或POST？

Question

我正在学习编写我正在开发的项目的Apache模块。我发现official guide，原来是很资料。

在第一页上，“Developing modules for the Apache HTTP Server 2.4”，部分“建立一个处理程序”，第“的request_rec结构”提供了一些示例代码：

static int example_handler(request_rec *r) 
{ 
    /* Set the appropriate content type */ 
    ap_set_content_type(r, "text/html"); 

    /* Print out the IP address of the client connecting to us: */ 
    ap_rprintf(r, "<h2>Hello, %s!</h2>", r->useragent_ip); 

    /* If we were reached through a GET or a POST request, be happy, else sad. */ 
    if (!strcmp(r->method, "POST") || !strcmp(r->method, "GET")) { 
     ap_rputs("You used a GET or a POST method, that makes us happy!<br/>", r); 
    } 
    else { 
     ap_rputs("You did not use POST or GET, that makes us sad :(<br/>", r); 
    } 

    /* Lastly, if there was a query string, let's print that too! */ 
    if (r->args) { 
     ap_rprintf(r, "Your query string was: %s", r->args); 
    } 
    return OK; 
} 

东西引起了我的眼睛是strcmp上r->method到看看它是POST,GET或别的东西。这很奇怪。我认为唯一的HTTP方法是GET和POST？还有其他的东西，还是仅仅是开发者（或者说记录者）非常谨慎？

Answer 1

该组的常见的方法被定义为RFC2616。

• OPTIONS
• GET
• HEAD
• POST
• PUT
• DELETE
• TRACE
• CONNECT

但其他协议使用了许多其他方法。例如，WEBDAV protocol定义了所有的这些：

• PROPFIND
• PROPPATCH
• MKCOL
• COPY
• MOVE
• LOCK
• UNLOCK

有一个draft RFC以及所有已知扩展方法的列表。但是在将来，如here所述，预计将在HTTP方法注册中向IANA注册新方法。

Answer 2

是的，有。

OPTIONS Request options of a Web page 
GET  Request to read a Web page 
HEAD Request to read a Web page 
PUT  Request to write a Web page 
POST Append to a named resource (e.g. a Web page) 
DELETE Remove the Web page 
LINK Connects two existing resources 
UNLINK Breaks an existing connection between two resources 

对于一个完整的参考检查HTTP Specification (RFC2616, Chapter 5.1.1)