Description
Hardware:
Board: Sparkfun ESP32Thing
Core Installation version: 2.0.0-rc1
IDE name: Arduino IDE 1.8.5
Flash Frequency: 80Mhz
PSRAM enabled: ?PSRAM?
Upload Speed: 921600
Computer OS: Mac OSX 11.5.1
Description:
The class Webserver is declared with two explicit constructors, one with signature:
WebServer::WebServer(IPAddress addr, int port)
Using this results in a server listening on the port number obtained by converting the value of the IPAddress addr argument (in host byte order) to a uint32_t and then to a uint16_t, which is manifestly not the result that would be expected.
The reason for this is that the definition of this constructor calls the WiFiServer constructor as _server(addr, port).
The class WiFiServer has exactly one explicit constructor with signature:
WiFiServer(uint16_t port=80, uint8_t max_clients=4).
This does not result in a compile-time error because class IPAddress declares an "operator uint32_t" and hence addr is implicitly cast to uint32_t from which it is implicitly case to uint16_t as required by WiFiserver constructor.
This can be demonstrated with the sketch below. A browser was used to make the HTTP request to the URL:
http://192.168.10.157:43200/
where the port number 43200 was chosen from the number displayed by the line:
Serial.print("(uint16_t)WiFi.localIP()="); Serial.println((uint16_t)WiFi.localIP(), DEC);
in the sketch, namely:
(uint16_t)WiFi.localIP()=43200
The Core Debug Level was set to Verbose so that the port number actually used in the HTTP request is exposed by the line:
log_v("headerValue: %s", headerValue.c_str());
in Parsing.cpp, namely:
[395236][V][Parsing.cpp:228] _parseRequest(): headerValue: 192.168.10.157:43200
In this case the port number is 43200 because the IP address is 192.168.10.157 but in general it will vary depending on the server's IP address.
As for a fix, we can assume from these results that this constructor is not being used and therefore could simply be deleted.
Sketch: (leave the backquotes for code formatting)
//Change the code below by your sketch
[code]
#include <WiFi.h>
#include <WebServer.h>
#include "secret.h" // for definitions of MySSID and MyPASSWORD
WebServer *server;
void setup() {
// put your setup code here, to run once:
// serial
Serial.begin(115200);
while (!Serial)
delay(100);
Serial.println("setting up");
// wifi
WiFi.begin(MySSID, MyPASSWORD); // as defined in "secret.h"
while (!WiFi.isConnected())
{
Serial.print('.');
delay(100);
}
Serial.println();
Serial.print("connected to "); Serial.print(WiFi.SSID());
Serial.print(" with address "); Serial.println(WiFi.localIP());
// www server
Serial.print("(uint32_t)WiFi.localIP()="); Serial.println((uint32_t)WiFi.localIP(), DEC);
Serial.print("(uint16_t)WiFi.localIP()="); Serial.println((uint16_t)WiFi.localIP(), DEC);
server = new WebServer(WiFi.localIP(), 80); // using constructor with signature WebServer(IPAddress addr, int port = 80)
if (server)
{
server->on("/", []() { server->send(200, "text/html", "<!DOCTYPE html><html><body>hello world</body></html>"); });
server->begin();
Serial.println("listening, but on which port?");
}
else
{
Serial.println("new WebServer failed");
}
}
void loop() {
// put your main code here, to run repeatedly:
if (server)
server->handleClient();
}
[/code]```
### Debug Messages:ets Jun 8 2016 00:22:57
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:1100
ho 0 tail 12 room 4
load:0x40078000,len:12752
load:0x40080400,len:3092
entry 0x400805e4
[�� $HH⸮LW+QW⸮Y.&⸮KZX⸮K,]⸮,'⸮LLW⸮⸮Y](]⸮⸮equencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
⸮setting up
[ 63][D][WiFiGeneric.cpp:808] _eventCallback(): Arduino Event: 0 - WIFI_READY
[ 159][V][WiFiGeneric.cpp:96] set_esp_interface_ip(): Configuring Station static IP: 0.0.0.0, MASK: 0.0.0.0, GW: 0.0.0.0
[ 158][V][WiFiGeneric.cpp:272] _arduino_event_cb(): STA Started
[ 165][D][WiFiGeneric.cpp:808] _eventCallback(): Arduino Event: 2 - STA_START
.....................[ 2276][V][WiFiGeneric.cpp:284] _arduino_event_cb(): STA Connected: SSID: MOBILE3, BSSID: 00:1e:42:19:71:d9, Channel: 11, Auth: WPA2_PSK
[ 2277][D][WiFiGeneric.cpp:808] _eventCallback(): Arduino Event: 4 - STA_CONNECTED
.[ 2327][V][WiFiGeneric.cpp:294] _arduino_event_cb(): STA Got New IP:192.168.10.157
[ 2328][D][WiFiGeneric.cpp:808] _eventCallback(): Arduino Event: 7 - STA_GOT_IP
[ 2331][D][WiFiGeneric.cpp:857] _eventCallback(): STA IP: 192.168.10.157, MASK: 255.255.255.0, GW: 192.168.10.3
connected to MOBILE3 with address 192.168.10.157
(uint32_t)WiFi.localIP()=2634721472
(uint16_t)WiFi.localIP()=43200
listening, but on which port?
[384334][V][WebServer.cpp:292] handleClient(): New client
[389338][V][WebServer.cpp:292] handleClient(): New client
[394342][V][WebServer.cpp:292] handleClient(): New client
[394343][V][Parsing.cpp:121] _parseRequest(): method: GET url: / search:
[394343][V][Parsing.cpp:227] _parseRequest(): headerName: Host
[394348][V][Parsing.cpp:228] _parseRequest(): headerValue: 192.168.10.157:43200
[394355][V][Parsing.cpp:227] _parseRequest(): headerName: Upgrade-Insecure-Requests
[394362][V][Parsing.cpp:228] _parseRequest(): headerValue: 1
[394368][V][Parsing.cpp:227] _parseRequest(): headerName: Accept
[394374][V][Parsing.cpp:228] _parseRequest(): headerValue: text/html,application/xhtml+xml,application/xml;q=0.9,/;q=0.8
[394385][V][Parsing.cpp:227] _parseRequest(): headerName: User-Agent
[394390][V][Parsing.cpp:228] _parseRequest(): headerValue: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15
[394406][V][Parsing.cpp:227] _parseRequest(): headerName: Accept-Language
[394413][V][Parsing.cpp:228] _parseRequest(): headerValue: en-au
[394418][V][Parsing.cpp:227] _parseRequest(): headerName: Accept-Encoding
[394425][V][Parsing.cpp:228] _parseRequest(): headerValue: gzip, deflate
[394431][V][Parsing.cpp:227] _parseRequest(): headerName: Connection
[394437][V][Parsing.cpp:228] _parseRequest(): headerValue: keep-alive
[394443][V][Parsing.cpp:255] _parseArguments(): args:
[394448][V][Parsing.cpp:238] _parseRequest(): Request: /
[394453][V][Parsing.cpp:239] _parseRequest(): Arguments:
[395189][V][WebServer.cpp:292] handleClient(): New client
[395234][V][Parsing.cpp:121] _parseRequest(): method: GET url: /favicon.ico search:
[395235][V][Parsing.cpp:227] _parseRequest(): headerName: Host
[395236][V][Parsing.cpp:228] _parseRequest(): headerValue: 192.168.10.157:43200
[395244][V][Parsing.cpp:227] _parseRequest(): headerName: Connection
[395250][V][Parsing.cpp:228] _parseRequest(): headerValue: keep-alive
[395256][V][Parsing.cpp:227] _parseRequest(): headerName: Accept
[395261][V][Parsing.cpp:228] _parseRequest(): headerValue: /
[395267][V][Parsing.cpp:227] _parseRequest(): headerName: User-Agent
[395273][V][Parsing.cpp:228] _parseRequest(): headerValue: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15
[395289][V][Parsing.cpp:227] _parseRequest(): headerName: Accept-Language
[395295][V][Parsing.cpp:228] _parseRequest(): headerValue: en-au
[395301][V][Parsing.cpp:227] _parseRequest(): headerName: Referer
[395307][V][Parsing.cpp:228] _parseRequest(): headerValue: http://192.168.10.157:43200/
[395315][V][Parsing.cpp:227] _parseRequest(): headerName: Accept-Encoding
[395321][V][Parsing.cpp:228] _parseRequest(): headerValue: gzip, deflate
[395327][V][Parsing.cpp:255] _parseArguments(): args:
[395332][V][Parsing.cpp:238] _parseRequest(): Request: /favicon.ico
[395338][V][Parsing.cpp:239] _parseRequest(): Arguments:
[395344][E][WebServer.cpp:633] _handleRequest(): request handler not found