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Freescale mcu OpenTCP-1.0.4.doc.html.zip 文档

00207                         
00208                         <span class="keywordflow">return</span>;                 
00209                 
00210                 }
00211                 
00212                 <span class="comment">/* More data to send    */</span>
00213                 
00214                 len = <a class="code" href="https__callbacks_8c.html#a2">https_loadbuffer</a>(ses, &amp;net_buf[<a class="code" href="tcp__ip_8h.html#a61">TCP_APP_OFFSET</a>], <a class="code" href="group__opentcp__config.html#a4">NETWORK_TX_BUFFER_SIZE</a> - <a class="code" href="tcp__ip_8h.html#a61">TCP_APP_OFFSET</a>);
00215                         
00216                 <span class="keywordflow">if</span>(len&lt;0)
00217                         <span class="keywordflow">return</span>;
00218                         
00219                 len = <a class="code" href="tcp_8c.html#a7">tcp_send</a>(https[ses].ownersocket, &amp;net_buf[<a class="code" href="tcp__ip_8h.html#a61">TCP_APP_OFFSET</a>], <a class="code" href="group__opentcp__config.html#a4">NETWORK_TX_BUFFER_SIZE</a> - <a class="code" href="tcp__ip_8h.html#a61">TCP_APP_OFFSET</a>, len); 
00220                 
00221                 <span class="keywordflow">if</span>(len&lt;0)
00222                 {
00223                         <a class="code" href="tcp_8c.html#a8">tcp_close</a>(https[ses].ownersocket);
00224                         https_deletesession(ses);
00225                         
00226                         ses++;
00227 
00228                         <span class="keywordflow">return</span>;                 
00229                 
00230                 }
00231                 
00232                 https[ses].<a class="code" href="structhttp__server__state.html#m5">funacked</a> = len;
00233                 
00234                 
00235                 <span class="comment">/* Serve another session on next run    */</span>
00236                 
00237                 ses++;
00238                 
00239                 <span class="keywordflow">return</span>;         
00240                 
00241         
00242         }       
00243         
00244         
00245 
00246 
00247 }
00248 
00249 <span class="comment">/********************************************************************************</span>
00250 <span class="comment">Function:               https_eventlistener</span>
00251 <span class="comment"></span>
00252 <span class="comment">Parameters:             INT8 cbhandle - handle to TCP socket where event is coming from </span>
00253 <span class="comment">                                UINT8 event - type of event</span>
00254 <span class="comment">                                UINT32 par1 - parameter the meaning of depends on event</span>
00255 <span class="comment">                                UINT32 par2 - parameter the meaning of depends on event</span>
00256 <span class="comment">                                </span>
00257 <span class="comment">Return val:             INT32 - depends on event but usually (-1) is error of some</span>
00258 <span class="comment">                                                kind and positive reply means OK</span>
00259 <span class="comment">                                </span>
00260 <span class="comment">Date:                   13.10.2002</span>
00261 <span class="comment"></span>
00262 <span class="comment">Desc:                   This function is given to TCP socket as function pointer to be</span>
00263 <span class="comment">                                used by TCP engine to make callbacks to inform about events</span>
00264 <span class="comment">                                on TCP e.g. arriving data. </span>
00265 <span class="comment">*********************************************************************************/</span>
00266 
00267 
00268 INT32 https_eventlistener (INT8 cbhandle, UINT8 event, UINT32 par1, UINT32 par2)
00269 {
00270         <span class="comment">/* This function is called by TCP stack to inform about events  */</span>
00271         
00272         INT16   i;
00273         INT16   session;
00274                 
00275         <span class="keywordflow">if</span>( <a class="code" href="http__server_8c.html#a0">https_enabled</a> == 0)
00276                 <span class="keywordflow">return</span>(-1);
00277         
00278         <span class="keywordflow">if</span>(cbhandle &lt; 0)
00279                 <span class="keywordflow">return</span>(-1);     
00280                 
00281         <span class="comment">/* Search for rigth session     */</span>
00282         
00283         session = https_searchsession(cbhandle);        
00284         
00285         <span class="keywordflow">switch</span>( event )
00286         {
00287         
00288                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a54">TCP_EVENT_CONREQ</a>:
00289                 
00290                         <span class="comment">/* Do we have a session for requesting socket?  */</span>
00291                         
00292                         <span class="keywordflow">if</span>(session &lt; 0)
00293                                 <span class="keywordflow">return</span>(-1);
00294 
00295                         
00296                         <span class="comment">/* Try to get new session       */</span>
00297                         
00298                         session = https_bindsession(cbhandle);
00299                         
00300                         <span class="keywordflow">if</span>(session &lt; 0)                 <span class="comment">/* No resources */</span>
00301                                 <span class="keywordflow">return</span>(-1);
00302 
00303                         
00304                         <span class="keywordflow">return</span>(1);
00305         
00306                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a57">TCP_EVENT_ABORT</a>:
00307                 
00308                         <span class="keywordflow">if</span>(session &lt; 0)
00309                                 <span class="keywordflow">return</span>(1);
00310                         
00311                         https_deletesession((UINT8)session);            
00312                         
00313                         <span class="keywordflow">return</span>(1);
00314                 
00315                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a55">TCP_EVENT_CONNECTED</a>:
00316                 
00317                         <span class="keywordflow">if</span>(session &lt; 0)
00318                                 <span class="keywordflow">return</span>(-1);
00319                 
00320                         https_activatesession((UINT8)session);
00321                         
00322                         <span class="keywordflow">return</span>(1);
00323                         
00324                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a56">TCP_EVENT_CLOSE</a>:
00325                 
00326                         <span class="keywordflow">if</span>(session &lt; 0)
00327                                 <span class="keywordflow">return</span>(-1);
00328                         
00329                         https_deletesession((UINT8)session);            
00330                         
00331                         <span class="keywordflow">return</span>(1);              
00332                 
00333                         
00334                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a58">TCP_EVENT_ACK</a>:
00335                 
00336                         <span class="keywordflow">if</span>(session &lt; 0)
00337                                 <span class="keywordflow">return</span>(-1);
00338                 
00339                         https[session].<a class="code" href="structhttp__server__state.html#m4">fpoint</a> += https[session].<a class="code" href="structhttp__server__state.html#m5">funacked</a>;
00340                         https[session].<a class="code" href="structhttp__server__state.html#m5">funacked</a> = 0;
00341                 
00342                         <span class="keywordflow">return</span>(1);
00343                         
00344                 <span class="keywordflow">case</span> <a class="code" href="tcp__ip_8h.html#a60">TCP_EVENT_DATA</a>:
00345                 
00346                         <span class="comment">/* Check for GET request        */</span>
00347                         
00348                         <span class="keywordflow">if</span>(session &lt; 0)
00349                                 <span class="keywordflow">return</span>(-1);
00350                         
00351                         <span class="keywordflow">if</span>(https[session].<a class="code" href="structhttp__server__state.html#m2">fstart</a> == 0)
00352                         {
00353                                 <span class="keywordflow">if</span>(par1 &lt;= 3)
00354                                         <span class="keywordflow">return</span>(1);
00355                                 
00356                                 <span class="comment">/* Check for GET        */</span>
00357                                 
00358                                 <span class="keywordflow">if</span>(<a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != <span class="charliteral">'G'</span>)
00359                                         <span class="keywordflow">return</span>(1);
00360                                 <span class="keywordflow">if</span>(<a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != <span class="charliteral">'E'</span>)
00361                                         <span class="keywordflow">return</span>(1);      
00362                                 <span class="keywordflow">if</span>(<a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() != <span class="charliteral">'T'</span>)
00363                                         <span class="keywordflow">return</span>(1);                      
00364                                         
00365                                 par1 -= 3;
00366                                 
00367                                 <span class="comment">/* Search for '/'       */</span>
00368                                 
00369                                 <span class="keywordflow">for</span>(i=0; i&lt;par1; i++)
00370                                 {
00371                                         <span class="keywordflow">if</span>(<a class="code" href="system_8h.html#a9">RECEIVE_NETWORK_B</a>() == <span class="charliteral">'/'</span>)
00372                                         {
00373                                                 i++;
00374                                                 <span class="keywordflow">break</span>;
00375                                         }
00376                                 }               
00377                                 
00378                                 par1 -= i;
00379                                 
00380                                 <span class="comment">/* Calculate Hash       */</span>
00381                                 
00382                                 i = https_calculatehash(par1);  
00383                                 
00384                                 <span class="keywordflow">if</span>(i &lt; 0)
00385                                 {
00386                                         <span class="comment">/* Invalid GET  */</span>
00387                                         <span class="keywordflow">return</span>(1);
00388                                 }       
00389                                 
00390                                 <span class="comment">/* Get FileRef  */</span>
00391                                 
00392                                 i = <a class="code" href="https__callbacks_8c.html#a1">https_findfile</a>((UINT8)i, (UINT8)session);