Php+socket Analog HTTP Requests

HTTP message structure

A client request consists of four parts: a request line (status line), a request header, a blank line, a request body (data), such as:

The service-side response consists of four parts: response Line (status line), response header, blank line, response body (data),

HTTP request Method:

POST, GET, Heade, PUT, TRACE, DELETE, OPTIONS, CONNECT (the top three most practical), there are so many request methods, but the Web server is not necessarily all supported.

GET is basically consistent, requesting the specified page information, and returning the entity body.

HEAD Basic is consistent with get, except that there is no specific content in the returned response to get the header

POST submits data to the specified resource for processing requests (such as forms, uploading files). The data is included in the request body. This request may result in the creation of new resources or modification of existing resources

Options returns the methods available to the server to allow the client to view the server's performance.

PUT replaces the contents of the specified document with the data that the client transmits to the server.

Delete Request server deletes the specified page

The Connect http/1.1 protocol is reserved for proxy servers that can change connections to pipelines.

TRACE echoes the requests received by the server, primarily for testing or diagnostics.

HTTP status Code

HTTP status Code five class

1xxx received request, continue processing

2XXX Request succeeded

3XXX redirection

4XXX Client Error

5xxx Server Request Error

Common normal Codes

200 Successful Request

301/302 Permanent/Temporary redirection

304 not modified, read from cache

404 resource does not exist

500 Server Internal Error

307 Redirect to keep the original data not lost

503 Server is temporarily unavailable

Based on the above on the HTTP has a certain understanding, according to the way the corresponding request for stitching

Php+socket Analog HTTP Requests

Interface

** *InterfacePhp_socket*/Interfacephp_socket{/** * @return Mixed*/     Public functionget (); /** * @return Mixed*/     Public functionPost$param); /** * @return Mixed*/     Public functionrequest (); /** * @return Mixed*/     Public functionHeader_info (); /** * @return Mixed*/     Public functionBody_info ($param); /** * @return Mixed*/     Public functionconnect ();}

Implementing interfaces

classImplement_socketImplementsphp_socket{protected $http _tpye= ' http/1.1 '; protected $url= ' '; protected $request _type= ' '; protected $lines= ' '; protected $fsoket _open= ' '; protected $port= ' '; protected $errstr= ' '; protected $timeout= 0; protected $parse _url= ' '; protected $content _type= ' '; protected $content _length= 0; protected $body= ' '; function__construct ($url,$request _type= ",$port= 80,$timeout= 5)    {        $this->url =$url; $this->request_type =$request _type; $this->port =$port; $this->timeout =$timeout; $this-Parse_url=Parse_url($url); //links        $this-Connect (); }    /** Set Request line **/     Public functionget () {$this->content_type = ' text/html '; $this->lines =$this->request_type. ‘ ‘ .$this-Parse_url[' Path ']. ‘ ‘ .$this-Http_tpye; $this-request (); }     Public functionPost$param)    {        //Set Header information        $this->content_type = ' application/x-www-form-urlencoded '; $data=$this->body_info ($param); $this->content_length =strlen($data); $this->lines =$this->request_type. ‘ ‘ .$this-Parse_url[' Path ']. ‘ ‘ .$this-Http_tpye; $this->body =$data; $this-request (); }     Public functionrequest () {$getinfo= ' '; Echo $this->lines. "\ r \ n".implode("\ r \ n",$this->header_info ()). "\n\r\n".$this-body; Exit(); //link Successful Write header information        fwrite($this->fsoket_open,$this->lines. "\ n".implode("\ n",$this->header_info ()). "\n\r\n".$this-body);  while(!feof($this-Fsoket_open)) {            $getinfo.=fgets($this->fsoket_open, 1024); }        fclose($this-Fsoket_open); Echo"The following is the information obtained:<br>".$getinfo; }    /** Link **/     Public functionConnect () {Try {            $this->fsoket_open =Fsockopen($this-Parse_url[' Host '],$this->port,$this-&GT;ERRSTR,$this-timeout); } Catch(Exception $exception) {            Echo' Connect is failed: '.$exception->getmessage (). ' r\n '.$this-Errstr; }    }    /** Set HEADER information **/     Public functionHeader_info () {return Array(            "Host:".$this-Parse_url[' Host '], "Content-type:".$this->content_type, "Content-length:".$this-content_length); }    /** Set Body **/     Public functionBody_info ($param)    {        //request string after generating Url-encode        return Http_build_query($param); }}

Php+socket Analog HTTP Requests