I'm having some problems with the Arduino Webserver. I have a page inside a SD card, my code searches for the files and show them into the generated page. But, when I add an "else if" to treat another "htm" file request, Chrome returns a "GET" to a file called "favicon.ico". I already tried to treat this file but without success. The Webserver just returns a blank page. When I delete the another "htm" file treatment from my code, my Webserver works just fine...
Here's my code:
OP's code; no knowledge of the specifics so can't help further but interested in possible advise.
#include <SPI.h>
#include <Ethernet.h>
#include <SD.h>
#define REQ_BUF_SZ 20
String readString;
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
IPAddress ip(192, 168, 0, 100);
EthernetServer server(80);
File webFile;
char HTTP_req[REQ_BUF_SZ] = {0};
char req_index = 0;
void setup()
{
pinMode(2, OUTPUT);
digitalWrite(2, HIGH);
pinMode(10, OUTPUT);
digitalWrite(10, HIGH);
Serial.begin(9600);
Serial.println("Initializing SD card...");
if (!SD.begin(4)) {
Serial.println("ERROR - SD card initialization failed!");
return;
}
Serial.println("SUCCESS - SD card initialized.");
if (!SD.exists("index.htm")) {
Serial.println("ERROR - Can't find index.htm file!");
return;
}
Serial.println("SUCCESS - Found index.htm file.");
Ethernet.begin(mac, ip);
server.begin();
}
void loop()
{
int lumi = analogRead(5);
EthernetClient client = server.available();
if (client) {
boolean currentLineIsBlank = true;
while (client.connected()) {
if (client.available()) {
char c = client.read();
if (req_index < (REQ_BUF_SZ - 1)) {
HTTP_req[req_index] = c;
req_index++;
}
Serial.print(c);
if (c == '\n' && currentLineIsBlank) {
if (StrContains(HTTP_req, "GET / ") || StrContains(HTTP_req, "GET /index.htm")) {
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
webFile = SD.open("index.htm");
}
else if (StrContains(HTTP_req, "GET /favicon.ico HTTP/1.1")) {
client.println(F("HTTP/1.1 200 OK\n"
"Content-Type: image/x-icon\n"
"Connection: keep-alive\n"));
webFile = SD.open("favicon.ico");
}
else if (StrContains(HTTP_req, "GET /home.htm")) {
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
webFile = SD.open("home.htm");
}
else if (StrContains(HTTP_req, "GET /gerencia.htm")) {
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
webFile = SD.open("gerencia.htm");
client.print("<p hidden id='dado'>" + String(lumi) + "</p>");
}
else if (StrContains(HTTP_req, "GET /lon.htm")) {
digitalWrite(2, LOW);
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
webFile = SD.open("lon.htm");
}
else if (StrContains(HTTP_req, "GET /loff.htm")) {
digitalWrite(2, HIGH);
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println("Connnection: close");
client.println();
webFile = SD.open("loff.htm");
}
else if (StrContains(HTTP_req, "GET /script.js")) {
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/js");
client.println("Connnection: close");
client.println();
webFile = SD.open("script.js");
}
else if (StrContains(HTTP_req, "GET /style.css")) {
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/css");
client.println("Connnection: close");
client.println();
webFile = SD.open("style.css");
}
else if (StrContains(HTTP_req, "GET /logo3.png")) {
webFile = SD.open("logo3.png");
if (webFile) {
client.println("HTTP/1.1 200 OK");
client.println();
}
}
else if (StrContains(HTTP_req, "GET /ico.ico")) {
webFile = SD.open("ico.ico");
if (webFile) {
client.println("HTTP/1.1 200 OK");
client.println();
}
}
if (webFile) {
while (webFile.available()) {
client.write(webFile.read());
}
webFile.close();
}
req_index = 0;
StrClear(HTTP_req, REQ_BUF_SZ);
break;
}
if (c == '\n') {
currentLineIsBlank = true;
}
else if (c != '\r') {
currentLineIsBlank = false;
}
}
}
delay(1);
client.stop();
}
}
void StrClear(char *str, char length)
{
for (int i = 0; i < length; i++) {
str[i] = 0;
}
}
char StrContains(char *str, char *sfind)
{
char found = 0;
char index = 0;
char len;
len = strlen(str);
if (strlen(sfind) > len) {
return 0;
}
while (index < len) {
if (str[index] == sfind[found]) {
found++;
if (strlen(sfind) == found) {
return 1;
}
}
else {
found = 0;
}
index++;
}
return 0;
}
correct line end for header lines is \r\n. println does it. don't use keep-alive. Add content-length header.