Photon SoftAP Inputs

Have you tried installing Bonjour? Without the right software, the PC will not be able to find mDNS names.

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Oh No! I totally forgot that! Thanks a lot @bko. I will install it & try again.

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Works Like a charm now! Thanks a lot @bko & @ScruffR :relaxed:

Beers for both of you! :beers:

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@ScruffR & @bko Though it’s working perfectly now, is there any other way to do it without MDNS library? Are there any other libraries available that doesn’t need installation of Bonjour for any OS? Or is there any different method than this?

Thanks.

@ScruffR, I’ve included softAP setup page’s code & photon’s hosted webpage code in a single .ino file. I’ve flashed it, then opened hosted webpage using DNS. It worked. Then I put my photon in LM, opened softAP setup page and connected the photon with the same network it’s hosting the Webpage. But, now I am unable to access my webpage using DNS (though it works by entering localIP). What could be the issue?

Thank You,
djs07

EDIT: This is my code. Is there any issue with it?

#include "Particle.h"
#include "softap_http.h"
#include <string.h>
#include <vector>
#include "MDNS.h"

SYSTEM_THREAD(ENABLED);

#define HTTP_PORT 80

MDNS mdns;
TCPServer server = TCPServer(HTTP_PORT);

struct Page
{
    const char* url;
    const char* mime_type;
    const char* data;
};

const char index_html[] = "<!DOCTYPE html><html><head><meta name='viewport' content='width=device-width, initial-scale=1'><title>Setup your device</title><link rel='stylesheet' type='text/css' href='style.css'></head><body><h1>Connect me to your WiFi!</h1><h3>My device ID:</h3><input type=text id='device-id' size='25' value='' disabled/><button type='button' class='input-helper' id='copy-button'>Copy</button><div id='scan-div'><h3>Scan for visible WiFi networks</h3><button id='scan-button' type='button'>Scan</button></div><div id='networks-div'></div><div id='connect-div' style='display: none'><p>Don't see your network? Move me closer to your router, then re-scan.</p><form id='connect-form'><input type='password' id='password' size='25' placeholder='password'/><button type='button' class='input-helper' id='show-button'>Show</button><button type='submit' id='connect-button'>Connect</button></form></div><script src='rsa-utils/jsbn_1.js'></script><script src='rsa-utils/jsbn_2.js'></script><script src='rsa-utils/prng4.js'></script><script src='rsa-utils/rng.js'></script><script src='rsa-utils/rsa.js'></script><script src='script.js'></script></body></html>";
const char rsa_js[] = "function parseBigInt(a,b){return new BigInteger(a,b);}function linebrk(a,b){var c='';var d=0;while(d+b<a.length){c+=a.substring(d,d+b)+'\\n';d+=b;}return c+a.substring(d,a.length);}function byte2Hex(a){if(a<0x10)return '0'+a.toString(16);else return a.toString(16);}function pkcs1pad2(a,b){if(b<a.length+11){alert('Message too long for RSA');return null;}var c=new Array();var d=a.length-1;while(d>=0&&b>0){var e=a.charCodeAt(d--);if(e<128)c[--b]=e;else if((e>127)&&(e<2048)){c[--b]=(e&63)|128;c[--b]=(e>>6)|192;}else{c[--b]=(e&63)|128;c[--b]=((e>>6)&63)|128;c[--b]=(e>>12)|224;}}c[--b]=0;var f=new SecureRandom();var g=new Array();while(b>2){g[0]=0;while(g[0]==0)f.nextBytes(g);c[--b]=g[0];}c[--b]=2;c[--b]=0;return new BigInteger(c);}function RSAKey(){this.n=null;this.e=0;this.d=null;this.p=null;this.q=null;this.dmp1=null;this.dmq1=null;this.coeff=null;}function RSASetPublic(a,b){if(a!=null&&b!=null&&a.length>0&&b.length>0){this.n=parseBigInt(a,16);this.e=parseInt(b,16);}else alert('Invalid RSA public key');}function RSADoPublic(a){return a.modPowInt(this.e,this.n);}function RSAEncrypt(a){var b=pkcs1pad2(a,(this.n.bitLength()+7)>>3);if(b==null)return null;var c=this.doPublic(b);if(c==null)return null;var d=c.toString(16);if((d.length&1)==0)return d;else return '0'+d;}RSAKey.prototype.doPublic=RSADoPublic;RSAKey.prototype.setPublic=RSASetPublic;RSAKey.prototype.encrypt=RSAEncrypt;";
const char style_css[] = "html{height:100%;margin:auto;background-color:white}body{box-sizing:border-box;min-height:100%;padding:20px;background-color:#1aabe0;font-family:'Lucida Sans Unicode','Lucida Grande',sans-serif;font-weight:normal;color:white;margin-top:0;margin-left:auto;margin-right:auto;margin-bottom:0;max-width:400px;text-align:center;border:1px solid #6e6e70;border-radius:4px}div{margin-top:25px;margin-bottom:25px}h1{margin-top:25px;margin-bottom:25px}button{border-color:#1c75be;background-color:#1c75be;color:white;border-radius:5px;height:30px;font-size:15px;font-weight:bold}button.input-helper{background-color:#bebebe;border-color:#bebebe;color:#6e6e70;margin-left:3px}button:disabled{background-color:#bebebe;border-color:#bebebe;color:white}input[type='text'],input[type='password']{background-color:white;color:#6e6e70;border-color:white;border-radius:5px;height:25px;text-align:center;font-size:15px}input:disabled{background-color:#bebebe;border-color:#bebebe}input[type='radio']{position:relative;bottom:-0.33em;margin:0;border:0;height:1.5em;width:15%}label{padding-top:7px;padding-bottom:7px;padding-left:5%;display:inline-block;width:80%;text-align:left}input[type='radio']:checked+label{font-weight:bold;color:#1c75be}.scanning-error{font-weight:bold;text-align:center}.radio-div{box-sizing:border-box;margin:2px;margin-left:auto;margin-right:auto;background-color:white;color:#6e6e70;border:1px solid #6e6e70;border-radius:3px;width:100%;padding:5px}#networks-div{margin-left:auto;margin-right:auto;text-align:left}#device-id{text-align:center}#scan-button{min-width:100px}#connect-button{display:block;min-width:100px;margin-top:10px;margin-left:auto;margin-right:auto;margin-bottom:20px}#password{margin-top:20px;margin-bottom:10px}";
const char rng_js[] = "var rng_state;var rng_pool;var rng_pptr;function rng_seed_int(a){rng_pool[rng_pptr++]^=a&255;rng_pool[rng_pptr++]^=(a>>8)&255;rng_pool[rng_pptr++]^=(a>>16)&255;rng_pool[rng_pptr++]^=(a>>24)&255;if(rng_pptr>=rng_psize)rng_pptr-=rng_psize;}function rng_seed_time(){rng_seed_int(new Date().getTime());}if(rng_pool==null){rng_pool=new Array();rng_pptr=0;var t;if(window.crypto&&window.crypto.getRandomValues){var ua=new Uint8Array(32);window.crypto.getRandomValues(ua);for(t=0;t<32;++t)rng_pool[rng_pptr++]=ua[t];}if(navigator.appName=='Netscape'&&navigator.appVersion<'5'&&window.crypto){var z=window.crypto.random(32);for(t=0;t<z.length;++t)rng_pool[rng_pptr++]=z.charCodeAt(t)&255;}while(rng_pptr<rng_psize){t=Math.floor(65536*Math.random());rng_pool[rng_pptr++]=t>>>8;rng_pool[rng_pptr++]=t&255;}rng_pptr=0;rng_seed_time();}function rng_get_byte(){if(rng_state==null){rng_seed_time();rng_state=prng_newstate();rng_state.init(rng_pool);for(rng_pptr=0;rng_pptr<rng_pool.length;++rng_pptr)rng_pool[rng_pptr]=0;rng_pptr=0;}return rng_state.next();}function rng_get_bytes(a){var b;for(b=0;b<a.length;++b)a[b]=rng_get_byte();}function SecureRandom(){}SecureRandom.prototype.nextBytes=rng_get_bytes;";
const char jsbn_2_js[] = "function bnpRShiftTo(a,b){b.s=this.s;var c=Math.floor(a/this.DB);if(c>=this.t){b.t=0;return;}var d=a%this.DB;var e=this.DB-d;var f=(1<<d)-1;b[0]=this[c]>>d;for(var g=c+1;g<this.t;++g){b[g-c-1]|=(this[g]&f)<<e;b[g-c]=this[g]>>d;}if(d>0)b[this.t-c-1]|=(this.s&f)<<e;b.t=this.t-c;b.clamp();}function bnpSubTo(a,b){var c=0,d=0,e=Math.min(a.t,this.t);while(c<e){d+=this[c]-a[c];b[c++]=d&this.DM;d>>=this.DB;}if(a.t<this.t){d-=a.s;while(c<this.t){d+=this[c];b[c++]=d&this.DM;d>>=this.DB;}d+=this.s;}else{d+=this.s;while(c<a.t){d-=a[c];b[c++]=d&this.DM;d>>=this.DB;}d-=a.s;}b.s=(d<0)?-1:0;if(d<-1)b[c++]=this.DV+d;else if(d>0)b[c++]=d;b.t=c;b.clamp();}function bnpMultiplyTo(a,b){var c=this.abs(),d=a.abs();var e=c.t;b.t=e+d.t;while(--e>=0)b[e]=0;for(e=0;e<d.t;++e)b[e+c.t]=c.am(0,d[e],b,e,0,c.t);b.s=0;b.clamp();if(this.s!=a.s)BigInteger.ZERO.subTo(b,b);}function bnpSquareTo(a){var b=this.abs();var c=a.t=2*b.t;while(--c>=0)a[c]=0;for(c=0;c<b.t-1;++c){var d=b.am(c,b[c],a,2*c,0,1);if((a[c+b.t]+=b.am(c+1,2*b[c],a,2*c+1,d,b.t-c-1))>=b.DV){a[c+b.t]-=b.DV;a[c+b.t+1]=1;}}if(a.t>0)a[a.t-1]+=b.am(c,b[c],a,2*c,0,1);a.s=0;a.clamp();}function bnpDivRemTo(a,b,c){var d=a.abs();if(d.t<=0)return;var e=this.abs();if(e.t<d.t){if(b!=null)b.fromInt(0);if(c!=null)this.copyTo(c);return;}if(c==null)c=nbi();var f=nbi(),g=this.s,h=a.s;var i=this.DB-nbits(d[d.t-1]);if(i>0){d.lShiftTo(i,f);e.lShiftTo(i,c);}else{d.copyTo(f);e.copyTo(c);}var j=f.t;var k=f[j-1];if(k==0)return;var l=k*(1<<this.F1)+((j>1)?f[j-2]>>this.F2:0);var m=this.FV/l,n=(1<<this.F1)/l,o=1<<this.F2;var p=c.t,q=p-j,r=(b==null)?nbi():b;f.dlShiftTo(q,r);if(c.compareTo(r)>=0){c[c.t++]=1;c.subTo(r,c);}BigInteger.ONE.dlShiftTo(j,r);r.subTo(f,f);while(f.t<j)f[f.t++]=0;while(--q>=0){var s=(c[--p]==k)?this.DM:Math.floor(c[p]*m+(c[p-1]+o)*n);if((c[p]+=f.am(0,s,c,q,0,j))<s){f.dlShiftTo(q,r);c.subTo(r,c);while(c[p]<--s)c.subTo(r,c);}}if(b!=null){c.drShiftTo(j,b);if(g!=h)BigInteger.ZERO.subTo(b,b);}c.t=j;c.clamp();if(i>0)c.rShiftTo(i,c);if(g<0)BigInteger.ZERO.subTo(c,c);}function bnMod(a){var b=nbi();this.abs().divRemTo(a,null,b);if(this.s<0&&b.compareTo(BigInteger.ZERO)>0)a.subTo(b,b);return b;}function Classic(a){this.m=a;}function cConvert(a){if(a.s<0||a.compareTo(this.m)>=0)return a.mod(this.m);else return a;}function cRevert(a){return a;}function cReduce(a){a.divRemTo(this.m,null,a);}function cMulTo(a,b,c){a.multiplyTo(b,c);this.reduce(c);}function cSqrTo(a,b){a.squareTo(b);this.reduce(b);}Classic.prototype.convert=cConvert;Classic.prototype.revert=cRevert;Classic.prototype.reduce=cReduce;Classic.prototype.mulTo=cMulTo;Classic.prototype.sqrTo=cSqrTo;function bnpInvDigit(){if(this.t<1)return 0;var a=this[0];if((a&1)==0)return 0;var b=a&3;b=(b*(2-(a&0xf)*b))&0xf;b=(b*(2-(a&0xff)*b))&0xff;b=(b*(2-(((a&0xffff)*b)&0xffff)))&0xffff;b=(b*(2-a*b%this.DV))%this.DV;return(b>0)?this.DV-b:-b;}function Montgomery(a){this.m=a;this.mp=a.invDigit();this.mpl=this.mp&0x7fff;this.mph=this.mp>>15;this.um=(1<<(a.DB-15))-1;this.mt2=2*a.t;}function montConvert(a){var b=nbi();a.abs().dlShiftTo(this.m.t,b);b.divRemTo(this.m,null,b);if(a.s<0&&b.compareTo(BigInteger.ZERO)>0)this.m.subTo(b,b);return b;}function montRevert(a){var b=nbi();a.copyTo(b);this.reduce(b);return b;}function montReduce(a){while(a.t<=this.mt2)a[a.t++]=0;for(var b=0;b<this.m.t;++b){var c=a[b]&0x7fff;var d=(c*this.mpl+(((c*this.mph+(a[b]>>15)*this.mpl)&this.um)<<15))&a.DM;c=b+this.m.t;a[c]+=this.m.am(0,d,a,b,0,this.m.t);while(a[c]>=a.DV){a[c]-=a.DV;a[++c]++;}}a.clamp();a.drShiftTo(this.m.t,a);if(a.compareTo(this.m)>=0)a.subTo(this.m,a);}function montSqrTo(a,b){a.squareTo(b);this.reduce(b);}function montMulTo(a,b,c){a.multiplyTo(b,c);this.reduce(c);}Montgomery.prototype.convert=montConvert;Montgomery.prototype.revert=montRevert;Montgomery.prototype.reduce=montReduce;Montgomery.prototype.mulTo=montMulTo;Montgomery.prototype.sqrTo=montSqrTo;function bnpIsEven(){return((this.t>0)?(this[0]&1):this.s)==0;}function bnpExp(a,b){if(a>0xffffffff||a<1)return BigInteger.ONE;var c=nbi(),d=nbi(),e=b.convert(this),f=nbits(a)-1;e.copyTo(c);while(--f>=0){b.sqrTo(c,d);if((a&(1<<f))>0)b.mulTo(d,e,c);else{var g=c;c=d;d=g;}}return b.revert(c);}function bnModPowInt(a,b){var c;if(a<256||b.isEven())c=new Classic(b);else c=new Montgomery(b);return this.exp(a,c);}BigInteger.prototype.copyTo=bnpCopyTo;BigInteger.prototype.fromInt=bnpFromInt;BigInteger.prototype.fromString=bnpFromString;BigInteger.prototype.clamp=bnpClamp;BigInteger.prototype.dlShiftTo=bnpDLShiftTo;BigInteger.prototype.drShiftTo=bnpDRShiftTo;BigInteger.prototype.lShiftTo=bnpLShiftTo;BigInteger.prototype.rShiftTo=bnpRShiftTo;BigInteger.prototype.subTo=bnpSubTo;BigInteger.prototype.multiplyTo=bnpMultiplyTo;BigInteger.prototype.squareTo=bnpSquareTo;BigInteger.prototype.divRemTo=bnpDivRemTo;BigInteger.prototype.invDigit=bnpInvDigit;BigInteger.prototype.isEven=bnpIsEven;BigInteger.prototype.exp=bnpExp;BigInteger.prototype.toString=bnToString;BigInteger.prototype.negate=bnNegate;BigInteger.prototype.abs=bnAbs;BigInteger.prototype.compareTo=bnCompareTo;BigInteger.prototype.bitLength=bnBitLength;BigInteger.prototype.mod=bnMod;BigInteger.prototype.modPowInt=bnModPowInt;BigInteger.ZERO=nbv(0);BigInteger.ONE=nbv(1);";
const char jsbn_1_js[] = "var dbits;var canary=0xdeadbeefcafe;var j_lm=((canary&0xffffff)==0xefcafe);function BigInteger(a,b,c){if(a!=null)if('number'==typeof a)this.fromNumber(a,b,c);else if(b==null&&'string'!=typeof a)this.fromString(a,256);else this.fromString(a,b);}function nbi(){return new BigInteger(null);}function am1(a,b,c,d,e,f){while(--f>=0){var g=b*this[a++]+c[d]+e;e=Math.floor(g/0x4000000);c[d++]=g&0x3ffffff;}return e;}function am2(a,b,c,d,e,f){var g=b&0x7fff,h=b>>15;while(--f>=0){var i=this[a]&0x7fff;var j=this[a++]>>15;var k=h*i+j*g;i=g*i+((k&0x7fff)<<15)+c[d]+(e&0x3fffffff);e=(i>>>30)+(k>>>15)+h*j+(e>>>30);c[d++]=i&0x3fffffff;}return e;}function am3(a,b,c,d,e,f){var g=b&0x3fff,h=b>>14;while(--f>=0){var i=this[a]&0x3fff;var j=this[a++]>>14;var k=h*i+j*g;i=g*i+((k&0x3fff)<<14)+c[d]+e;e=(i>>28)+(k>>14)+h*j;c[d++]=i&0xfffffff;}return e;}if(j_lm&&(navigator.appName=='Microsoft Internet Explorer')){BigInteger.prototype.am=am2;dbits=30;}else if(j_lm&&(navigator.appName!='Netscape')){BigInteger.prototype.am=am1;dbits=26;}else{BigInteger.prototype.am=am3;dbits=28;}BigInteger.prototype.DB=dbits;BigInteger.prototype.DM=((1<<dbits)-1);BigInteger.prototype.DV=(1<<dbits);var BI_FP=52;BigInteger.prototype.FV=Math.pow(2,BI_FP);BigInteger.prototype.F1=BI_FP-dbits;BigInteger.prototype.F2=2*dbits-BI_FP;var BI_RM='0123456789abcdefghijklmnopqrstuvwxyz';var BI_RC=new Array();var rr,vv;rr='0'.charCodeAt(0);for(vv=0;vv<=9;++vv)BI_RC[rr++]=vv;rr='a'.charCodeAt(0);for(vv=10;vv<36;++vv)BI_RC[rr++]=vv;rr='A'.charCodeAt(0);for(vv=10;vv<36;++vv)BI_RC[rr++]=vv;function int2char(a){return BI_RM.charAt(a);}function intAt(a,b){var c=BI_RC[a.charCodeAt(b)];return(c==null)?-1:c;}function bnpCopyTo(a){for(var b=this.t-1;b>=0;--b)a[b]=this[b];a.t=this.t;a.s=this.s;}function bnpFromInt(a){this.t=1;this.s=(a<0)?-1:0;if(a>0)this[0]=a;else if(a<-1)this[0]=a+this.DV;else this.t=0;}function nbv(a){var b=nbi();b.fromInt(a);return b;}function bnpFromString(a,b){var c;if(b==16)c=4;else if(b==8)c=3;else if(b==256)c=8;else if(b==2)c=1;else if(b==32)c=5;else if(b==4)c=2;else{this.fromRadix(a,b);return;}this.t=0;this.s=0;var d=a.length,e=false,f=0;while(--d>=0){var g=(c==8)?a[d]&0xff:intAt(a,d);if(g<0){if(a.charAt(d)=='-')e=true;continue;}e=false;if(f==0)this[this.t++]=g;else if(f+c>this.DB){this[this.t-1]|=(g&((1<<(this.DB-f))-1))<<f;this[this.t++]=(g>>(this.DB-f));}else this[this.t-1]|=g<<f;f+=c;if(f>=this.DB)f-=this.DB;}if(c==8&&(a[0]&0x80)!=0){this.s=-1;if(f>0)this[this.t-1]|=((1<<(this.DB-f))-1)<<f;}this.clamp();if(e)BigInteger.ZERO.subTo(this,this);}function bnpClamp(){var a=this.s&this.DM;while(this.t>0&&this[this.t-1]==a)--this.t;}function bnToString(a){if(this.s<0)return '-'+this.negate().toString(a);var b;if(a==16)b=4;else if(a==8)b=3;else if(a==2)b=1;else if(a==32)b=5;else if(a==4)b=2;else return this.toRadix(a);var c=(1<<b)-1,d,e=false,f='',g=this.t;var h=this.DB-(g*this.DB)%b;if(g-->0){if(h<this.DB&&(d=this[g]>>h)>0){e=true;f=int2char(d);}while(g>=0){if(h<b){d=(this[g]&((1<<h)-1))<<(b-h);d|=this[--g]>>(h+=this.DB-b);}else{d=(this[g]>>(h-=b))&c;if(h<=0){h+=this.DB;--g;}}if(d>0)e=true;if(e)f+=int2char(d);}}return e?f:'0';}function bnNegate(){var a=nbi();BigInteger.ZERO.subTo(this,a);return a;}function bnAbs(){return(this.s<0)?this.negate():this;}function bnCompareTo(a){var b=this.s-a.s;if(b!=0)return b;var c=this.t;b=c-a.t;if(b!=0)return(this.s<0)?-b:b;while(--c>=0)if((b=this[c]-a[c])!=0)return b;return 0;}function nbits(a){var b=1,c;if((c=a>>>16)!=0){a=c;b+=16;}if((c=a>>8)!=0){a=c;b+=8;}if((c=a>>4)!=0){a=c;b+=4;}if((c=a>>2)!=0){a=c;b+=2;}if((c=a>>1)!=0){a=c;b+=1;}return b;}function bnBitLength(){if(this.t<=0)return 0;return this.DB*(this.t-1)+nbits(this[this.t-1]^(this.s&this.DM));}function bnpDLShiftTo(a,b){var c;for(c=this.t-1;c>=0;--c)b[c+a]=this[c];for(c=a-1;c>=0;--c)b[c]=0;b.t=this.t+a;b.s=this.s;}function bnpDRShiftTo(a,b){for(var c=a;c<this.t;++c)b[c-a]=this[c];b.t=Math.max(this.t-a,0);b.s=this.s;}function bnpLShiftTo(a,b){var c=a%this.DB;var d=this.DB-c;var e=(1<<d)-1;var f=Math.floor(a/this.DB),g=(this.s<<c)&this.DM,h;for(h=this.t-1;h>=0;--h){b[h+f+1]=(this[h]>>d)|g;g=(this[h]&e)<<c;}for(h=f-1;h>=0;--h)b[h]=0;b[f]=g;b.t=this.t+f+1;b.s=this.s;b.clamp();}";
const char script_js[] = "var base_url='http://192.168.0.1/';var network_list;var public_key;var rsa=new RSAKey();var scanButton=document.getElementById('scan-button');var connectButton=document.getElementById('connect-button');var copyButton=document.getElementById('copy-button');var showButton=document.getElementById('show-button');var deviceID=document.getElementById('device-id');var connectForm=document.getElementById('connect-form');var public_key_callback={success:function(a){console.log('Public key: '+a.b);public_key=a.b;rsa.setPublic(public_key.substring(58,58+256),public_key.substring(318,318+6));},error:function(a,b){console.log(a);window.alert('There was a problem fetching important information from your device. Please verify your connection, then reload this page.');}};var device_id_callback={success:function(a){var b=a.id;deviceID.value=b;},error:function(a,b){console.log(a);var c='COMMUNICATION_ERROR';deviceID.value=c;}};var scan=function(){console.log('Scanning...!');disableButtons();scanButton.innerHTML='Scanning...';connectButton.innerHTML='Connect';document.getElementById('connect-div').style.display='none';document.getElementById('networks-div').style.display='none';getRequest(base_url+'scan-ap',scan_callback);};var scan_callback={success:function(a){network_list=a.scans;console.log('I found:');var b=document.getElementById('networks-div');b.innerHTML='';if(network_list.length>0)for(var c=0;c<network_list.length;c++){ssid=network_list[c].ssid;console.log(network_list[c]);add_wifi_option(b,ssid);document.getElementById('connect-div').style.display='block';}else b.innerHTML='<p class=\\'scanning-error\\'>No networks found.</p>';},error:function(a){console.log('Scanning error:'+a);document.getElementById('networks-div').innerHTML='<p class=\\'scanning-error\\'>Scanning error.</p>';},regardless:function(){scanButton.innerHTML='Re-Scan';enableButtons();document.getElementById('networks-div').style.display='block';}};var configure=function(a){a.preventDefault();var b=get_selected_network();var c=document.getElementById('password').value;if(!b){window.alert('Please select a network!');return false;}var d={idx:0,ssid:b.ssid,pwd:rsa.encrypt(c),sec:b.sec,ch:b.ch};connectButton.innerHTML='Sending credentials...';disableButtons();console.log('Sending credentials: '+JSON.stringify(d));postRequest(base_url+'configure-ap',d,configure_callback);};var configure_callback={success:function(a){console.log('Credentials received.');connectButton.innerHTML='Credentials received...';postRequest(base_url+'connect-ap',{idx:0},connect_callback);},error:function(a,b){console.log('Configure error: '+a);window.alert('The configuration command failed, check that you are still well connected to the device\\'s WiFi hotspot and retry.');connectButton.innerHTML='Retry';enableButtons();}};var connect_callback={success:function(a){console.log('Attempting to connect to the cloud.');connectButton.innerHTML='Attempting to connect...';window.alert('Your device should now start flashing green and attempt to connect to the cloud. This usually takes about 20 seconds, after which it will begin slowly blinking cyan. \\n\\n\\nIf this process fails because you entered the wrong password, the device will flash green indefinitely. In this case, hold the setup button for 6 seconds until the device starts blinking blue again. Then reconnect to the WiFi hotspot it generates and reload this page to try again.');},error:function(a,b){console.log('Connect error: '+a);window.alert('The connect command failed, check that you are still well connected to the device\\'s WiFi hotspot and retry.');connectButton.innerHTML='Retry';enableButtons();}};var disableButtons=function(){connectButton.disabled=true;scanButton.disabled=true;};var enableButtons=function(){connectButton.disabled=false;scanButton.disabled=false;};var add_wifi_option=function(a,b){var c=document.createElement('INPUT');c.type='radio';c.value=b;c.id=b;c.name='ssid';c.className='radio';var d=document.createElement('DIV');d.className='radio-div';d.appendChild(c);var e=document.createElement('label');e.htmlFor=b;e.innerHTML=b;d.appendChild(e);a.appendChild(d);};var get_selected_network=function(){for(var a=0;a<network_list.length;a++){ssid=network_list[a].ssid;if(document.getElementById(ssid).checked)return network_list[a];}};var copy=function(){window.prompt('Copy to clipboard: Ctrl + C, Enter',deviceID.value);};var toggleShow=function(){var a=document.getElementById('password');inputType=a.type;if(inputType==='password'){showButton.innerHTML='Hide';a.type='text';}else{showButton.innerHTML='Show';a.type='password';}};var getRequest=function(a,b){var c=new XMLHttpRequest();c.open('GET',a,true);c.timeout=8000;c.send();c.onreadystatechange=function(){if(c.readyState==4)if(b){if(c.status==200){if(b.success)b.success(JSON.parse(c.responseText));}else if(b.error)b.error(c.status,c.responseText);if(b.regardless)b.regardless();}};};var postRequest=function(a,b,c){var d=JSON.stringify(b);var e=new XMLHttpRequest();e.open('POST',a,true);e.timeout=4000;e.setRequestHeader('Content-Type','multipart/form-data');e.send(d);e.onreadystatechange=function(){if(e.readyState==4)if(c){if(e.status==200){if(c.success)c.success(JSON.parse(e.responseText));}else if(c.error)c.error(e.status,e.responseText);if(c.regardless)c.regardless();}};};if(scanButton.addEventListener){copyButton.addEventListener('click',copy);showButton.addEventListener('click',toggleShow);scanButton.addEventListener('click',scan);connectForm.addEventListener('submit',configure);}else if(scanButton.attachEvent){copyButton.attachEvent('onclick',copy);showButton.attachEvent('onclick',toggleShow);scanButton.attachEvent('onclick',scan);connectForm.attachEvent('onsubmit',configure);}getRequest(base_url+'device-id',device_id_callback);getRequest(base_url+'public-key',public_key_callback);";
const char prng4_js[] = "function Arcfour(){this.i=0;this.j=0;this.S=new Array();}function ARC4init(a){var b,c,d;for(b=0;b<256;++b)this.S[b]=b;c=0;for(b=0;b<256;++b){c=(c+this.S[b]+a[b%a.length])&255;d=this.S[b];this.S[b]=this.S[c];this.S[c]=d;}this.i=0;this.j=0;}function ARC4next(){var a;this.i=(this.i+1)&255;this.j=(this.j+this.S[this.i])&255;a=this.S[this.i];this.S[this.i]=this.S[this.j];this.S[this.j]=a;return this.S[(a+this.S[this.i])&255];}Arcfour.prototype.init=ARC4init;Arcfour.prototype.next=ARC4next;function prng_newstate(){return new Arcfour();}var rng_psize=256;";

Page myPages[] = {
     { "/index.html", "text/html", index_html },
     { "/rsa-utils/rsa.js", "application/javascript", rsa_js },
     { "/style.css", "text/css", style_css },
     { "/rsa-utils/rng.js", "application/javascript", rng_js },
     { "/rsa-utils/jsbn_2.js", "application/javascript", jsbn_2_js },
     { "/rsa-utils/jsbn_1.js", "application/javascript", jsbn_1_js },
     { "/script.js", "application/javascript", script_js },
     { "/rsa-utils/prng4.js", "application/javascript", prng4_js },
     { nullptr }
};

STARTUP(softap_set_application_page_handler(myPage, nullptr));
STARTUP(WiFi.selectAntenna(ANT_EXTERNAL));

void myPage(const char* url, ResponseCallback* cb, void* cbArg, Reader* body, Writer* result, void* reserved)
{
    Serial.printlnf("handling page %s", url);

    if (strcmp(url,"/index")==0) {
        Serial.println("sending redirect");
        Header h("Location: /index.html\r\n");
        cb(cbArg, 0, 301, "text/plain", &h);
        return;
    }

    int8_t idx = 0;
    for (;;idx++) {
        Page& p = myPages[idx];
        if (!p.url) {
            idx = -1;
            break;
        }
        else if (strcmp(url, p.url)==0) {
            break;
        }
    }

    if (idx==-1) {
        cb(cbArg, 0, 404, nullptr, nullptr);
    }
    else {
        cb(cbArg, 0, 200, myPages[idx].mime_type, nullptr);
        result->write(myPages[idx].data);
    }
}

void setup() {

  server.begin();

  bool success = mdns.setHostname("mydevice");
  if (success)
  {
    success = mdns.addService("tcp", "http", HTTP_PORT, "Photon");
    mdns.begin();
  }
 
  Serial.begin(9600);
  waitUntil(WiFi.ready);
  Particle.process();

}

void loop() {
  mdns.processQueries();
  TCPClient client = server.available();

  if (client){
    while (client.read() != -1);

    client.write("HTTP/1.1 200 Ok\n\n<html><title>MyDevice</title><body><h1>Hello World!</h1></body></html>\n\n");
    client.flush();
    delay(5);
    client.stop();
  }
  Serial.println(WiFi.localIP());
}

I’ve found the solution. I was doing this mistake of writing server.begin() before setting hostname. Now it’s solved.