HTTP是否有GET或POST？

Question

我正在學習編寫我正在開發的項目的Apache模塊。我發現official guide，原來是很資料。

在第一頁上，「Developing modules for the Apache HTTP Server 2.4」，部分「建立一個處理程序」，第「的request_rec結構」提供了一些示例代碼：

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; 
} 

東西引起了我的眼睛是strcmp上r->method到看看它是POST,GET或別的東西。這很奇怪。我認爲唯一的HTTP方法是GET和POST？還有其他的東西，還是僅僅是開發者（或者說記錄者）非常謹慎？

Answer 1

該組的常見的方法被定義爲RFC2616。

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

但其他協議使用了許多其他方法。例如，WEBDAV protocol定義了所有的這些：

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

有一個draft RFC以及所有已知擴展方法的列表。但是在將來，如here所述，預計將在HTTP方法註冊中向IANA註冊新方法。

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 

對於一個完整的參考檢查HTTP Specification (RFC2616, Chapter 5.1.1)