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aiotech-pub opened this issue Jan 3, 2022 · 1 comment
Open

stop client #7

aiotech-pub opened this issue Jan 3, 2022 · 1 comment

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@aiotech-pub
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I am porting an application from ESPWebServer to ESPWebServerSecure.
To send back to the client the content of a HTML page I just need to fill the String webpage and call these 5 functions:

static void append_page_header() 
{
   #define SITE_WIDTH 1020
   #define version "1.0"
   webpage  = F("<!DOCTYPE HTML><html lang='en'><head>");
   webpage += "<META HTTP-EQUIV='Content-Type' CONTENT='text/html; charset=utf-8'>";
   webpage += F("<title>Invio di messaggi - Talking Tree</title><style>");
   webpage += F("body {width:");
   webpage += SITE_WIDTH;
   webpage += F("px;margin:0 auto;font-family:arial;font-size:14px;text-align:center;color:#776688;background-color:#F7F2Fd;}");
   webpage += F("ul{list-style-type:circle; margin:0;padding:0;overflow:hidden;background-color:#d8d8d8;font-size:14px;}");
   webpage += F("li{float:left;border-right:1px solid #bbb;}last-child {border-right:none;}");
   webpage += F("li a{display: block;padding:2px 12px;text-decoration:none;}");
   webpage += F("li a:hover{background-color:#FFFFFF;}");
   webpage += F("section {font-size:16px;}");
   webpage += F("p {background-color:#D1DBE3;font-size:16px;}");
   webpage += F("div.header,div.footer{padding:0.5em;color:white;background-color:gray;clear:left;}");
   webpage += F("h1{background-color:#d8d8d8;font-size:26px;}");
   webpage += F("h2{color:#9370DB;font-size:22px;line-height:65%;}");
   webpage += F("h3{color:#9370DB;font-size:16px;line-height:55%;}");
   webpage += F("</style></head><body><h1>Talking Tree ");
   webpage += String(version)+"</h1>";
}
//---------------------------------------------------------------------------

static void append_page_footer()
{ 
   webpage += F("<ul><li><a href='/'>Page reload</a></li></ul>");
   webpage += F("</body></html>");
}
//---------------------------------------------------------------------------

static void SendHTML_Header()
{
  server.sendHeader("Cache-Control", "no-cache, no-store, must-revalidate"); 
  server.sendHeader("Pragma", "no-cache"); 
  server.sendHeader("Expires", "-1"); 
  server.setContentLength(CONTENT_LENGTH_UNKNOWN); 
  server.send(200, "text/html", ""); // Empty content inhibits Content-length header so we have to close the socket ourselves. 
  append_page_header();
  server.sendContent(webpage);
  webpage = "";
}
//-----------------------------------------------------------------------------

static void SendHTML_Content()
{
  server.sendContent(webpage);
  webpage = "";
}
//-----------------------------------------------------------------------------

static void SendHTML_Stop()
{
  server.sendContent("");
  server.client().stop(); // Stop is needed because no content length was sent
}
//-----------------------------------------------------------------------------

this is an example:

static void ReportCouldNotCreateFile(String target)
{
  SendHTML_Header();
  webpage += F("<h3>Could Not Create Uploaded File (write-protected?)</h3>"); 
  webpage += F("<a href='/"); webpage += target + "'>[Back]</a><br><br>";
  append_page_footer();
  SendHTML_Content();
  SendHTML_Stop();
}
//-----------------------------------------------------------------------------

so I would like to modify as little as possible these functions... the only problem is in the last line of SendHTML_Stop():
server.client().stop(); // Stop is needed because no content length was sent because there is no reference to the connected client.

Is there an equivalent way to obtain the same result?
Thanks.
@bwjohns4
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bwjohns4 commented May 7, 2022

@aiotech-pub, did you ever figure out a workaround for this?

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@bwjohns4 @aiotech-pub