ssl - Https with TLS 1.2 in Xamarin -


i'm using httpclient in xamarin request https tls 1.2 , got error below;

system.aggregateexception: 1 or more errors occurred ---> system.net.webexception: error writing headers ---> system.io.ioexception: authentication or decryption has failed. ---> mono.security.protocol.tls.tlsexception: authentication or decryption has failed.   @ mono.security.protocol.tls.recordprotocol.processalert (alertlevel alertlevel, alertdescription alertdesc) [0x00013] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/recordprotocol.cs:574    @ mono.security.protocol.tls.recordprotocol.internalreceiverecordcallback (iasyncresult asyncresult) [0x000d0] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/recordprotocol.cs:376    --- end of inner exception stack trace ---   @ mono.security.protocol.tls.sslclientstream.endnegotiatehandshake (iasyncresult result) [0x00035] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/sslclientstream.cs:425    @ mono.security.protocol.tls.sslstreambase.asynchandshakecallback (iasyncresult asyncresult) [0x0000c] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/sslstreambase.cs:99    --- end of inner exception stack trace ---   @ system.net.httpwebrequest.endgetresponse (iasyncresult asyncresult) [0x0005e] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/system/system.net/httpwebrequest.cs:969    @ system.threading.tasks.taskfactory`1[system.net.webresponse].innerinvoke (system.threading.tasks.taskcompletionsource`1 tcs, system.func`2 endmethod, iasyncresult l) [0x00000] in /developer/monotouch/source/mono/mcs/class/corlib/system.threading.tasks/taskfactory_t.cs:473  --- end of stack trace previous location exception thrown ---   @ system.runtime.exceptionservices.exceptiondispatchinfo.throw () [0x0000b] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.exceptionservices/exceptiondispatchinfo.cs:62    @ system.runtime.compilerservices.configuredtaskawaitable`1+configuredtaskawaiter[system.net.webresponse].getresult () [0x00034] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.compilerservices/configuredtaskawaitable_t.cs:62    @ system.net.http.httpclienthandler+<sendasync>c__async0.movenext () [0x002d0] in /developer/monotouch/source/mono/mcs/class/system.net.http/system.net.http/httpclienthandler.cs:338  --- end of stack trace previous location exception thrown ---   @ system.runtime.exceptionservices.exceptiondispatchinfo.throw () [0x0000b] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.exceptionservices/exceptiondispatchinfo.cs:62    @ system.runtime.compilerservices.configuredtaskawaitable`1+configuredtaskawaiter[system.net.http.httpresponsemessage].getresult () [0x00034] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.compilerservices/configuredtaskawaitable_t.cs:62    @ system.net.http.httpclient+<sendasyncworker>c__async0.movenext () [0x000a9] in /developer/monotouch/source/mono/mcs/class/system.net.http/system.net.http/httpclient.cs:273    --- end of inner exception stack trace ---   @ system.threading.tasks.task.wait (int32 millisecondstimeout, cancellationtoken cancellationtoken) [0x00049] in /developer/monotouch/source/mono/mcs/class/corlib/system.threading.tasks/task.cs:709    @ system.threading.tasks.task.wait () [0x00000] in /developer/monotouch/source/mono/mcs/class/corlib/system.threading.tasks/task.cs:679    @ system.threading.tasks.task`1[system.net.http.httpresponsemessage].get_result () [0x0000b] in /developer/monotouch/source/mono/mcs/class/corlib/system.threading.tasks/task_t.cs:48    @ cucumber.viewmodels.loginviewmodel+<executelogincommand>c__async0.movenext () [0x00144] in /users/bachpx1/fsbprojects/fsoftinternalnews/cucumber/xamarin_form/cucumber/cucumber.shared/viewmodels/loginviewmodel.cs:94   --> (inner exception 0) system.net.webexception: error writing headers ---> system.io.ioexception: authentication or decryption has failed. ---> mono.security.protocol.tls.tlsexception: authentication or decryption has failed.   @ mono.security.protocol.tls.recordprotocol.processalert (alertlevel alertlevel, alertdescription alertdesc) [0x00013] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/recordprotocol.cs:574    @ mono.security.protocol.tls.recordprotocol.internalreceiverecordcallback (iasyncresult asyncresult) [0x000d0] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/recordprotocol.cs:376    --- end of inner exception stack trace ---   @ mono.security.protocol.tls.sslclientstream.endnegotiatehandshake (iasyncresult result) [0x00035] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/sslclientstream.cs:425    @ mono.security.protocol.tls.sslstreambase.asynchandshakecallback (iasyncresult asyncresult) [0x0000c] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/mono.security/mono.security.protocol.tls/sslstreambase.cs:99    --- end of inner exception stack trace ---   @ system.net.httpwebrequest.endgetresponse (iasyncresult asyncresult) [0x0005e] in ///library/frameworks/xamarin.ios.framework/versions/8.9.1.3/src/mono/mcs/class/system/system.net/httpwebrequest.cs:969    @ system.threading.tasks.taskfactory`1[system.net.webresponse].innerinvoke (system.threading.tasks.taskcompletionsource`1 tcs, system.func`2 endmethod, iasyncresult l) [0x00000] in /developer/monotouch/source/mono/mcs/class/corlib/system.threading.tasks/taskfactory_t.cs:473  --- end of stack trace previous location exception thrown ---   @ system.runtime.exceptionservices.exceptiondispatchinfo.throw () [0x0000b] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.exceptionservices/exceptiondispatchinfo.cs:62    @ system.runtime.compilerservices.configuredtaskawaitable`1+configuredtaskawaiter[system.net.webresponse].getresult () [0x00034] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.compilerservices/configuredtaskawaitable_t.cs:62    @ system.net.http.httpclienthandler+<sendasync>c__async0.movenext () [0x002d0] in /developer/monotouch/source/mono/mcs/class/system.net.http/system.net.http/httpclienthandler.cs:338  --- end of stack trace previous location exception thrown ---   @ system.runtime.exceptionservices.exceptiondispatchinfo.throw () [0x0000b] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.exceptionservices/exceptiondispatchinfo.cs:62    @ system.runtime.compilerservices.configuredtaskawaitable`1+configuredtaskawaiter[system.net.http.httpresponsemessage].getresult () [0x00034] in /developer/monotouch/source/mono/mcs/class/corlib/system.runtime.compilerservices/configuredtaskawaitable_t.cs:62    @ system.net.http.httpclient+<sendasyncworker>c__async0.movenext () [0x000a9] in /developer/monotouch/source/mono/mcs/class/system.net.http/system.net.http/httpclient.cs:273

do know how fix issue. have heard xamarin errors tls in mono 2.0. many thanks

tls not yet implemented in mono. means https requests may fail not when running .net app on windows.

xamarin deployment

since using xamarin, can use modernhttpclient wrapper around native ios / android networking libraries.

android, mac , ios users can latest tls http workloads using modernhttpclient. mac/ios users can use built-in cfnetworkhandler well.

linux/mac deployment

if deploying mono on linux/mac (without xamarin), you'll need find workaround lack of tls support.

there 2 possible workarounds come mind:

use custom tls implementation

try using juhovh/aaltotls, implementation of ssl/tls network protocol written using c# , standard cryptographic libraries of .net relevant. take care of tls decryption/encryption , won't use built-in lacking mono implementation.

implement tls proxy

build tls proxy tls heavy-lifting -- you'll configure http proxy http requests in mono, receive them, , query target server via https, handling encryption , decryption mono app.

workflow:

mono app -> httpclient sends http request via tls proxy -> tls proxy converts http request https , sends target server -> tls proxy receives response -> tls proxy sends response httpclient in http format

example code in node.js tls proxy workaround using nodejitsu/node-http-proxy:

// modules var http = require('http'); var httpproxy = require('http-proxy');  // proxy server options var options = {secure: true}; // validate remote ssl certificates  // create proxy server custom application logic var proxy = httpproxy.createproxyserver(options);  // handle errors gracefully proxy.on('error', function(e) {     // log console     console.log(e); });  // create server , define custom logic var server = http.createserver(function(req, res) {     // url provided?     if (req.url) {          // convert https         req.url = req.url.replace('http://', 'https://');     }      // remote host headers (and force https)     var target = 'https://' + req.headers.host;      // proxy request (target server pass request on to)     proxy.web(req, res, { target: target }); });  // proxy port var port = 8080;  // start listening requests clients server.listen(port);  // log port number console.log('proxy.port: ' + port);

-

Popular posts from this blog

c# - ODP.NET Oracle.ManagedDataAccess causes ORA-12537 network session end of file -

overview i want replace oracle.dataaccess orcale. managed dataaccess, opening connection latter throws ora-12537 network session end of file exception. exception message / stack trace {oracleinternal.network.networkexception (0x000030f9): ora-12537 : netzwerksession: dateiende @ oracleinternal.network.readerstream.read(orabuf ob) @ oracleinternal.ttc.orabufreader.getdatafromnetwork() @ oracleinternal.ttc.orabufreader.read(boolean bignoredata) @ oracleinternal.ttc.marshallingengine.unmarshalub1(boolean bignoredata) @ oracleinternal.ttc.ttcprotocolnegotiation.readresponse()} i trying connect oracle 11g database , not have client installed on local machine. working test application (unmanaged) using oracle.dataaccess works fine . using system; using oracle.dataaccess.client; namespace app.odp.unmanaged { internal class program { private static void main(string[] args) { //dummy connection string
Read more

matlab - Compression and Decompression of ECG Signal using HUFFMAN ALGORITHM -

i want compress , decompress ecg signal stored text message text file , find out file size, cr,prd ratio,and qs. here code compression , decompression of ecg signal using huffman algorithm. i'm trying find out file size, compression ratio,prd ratio,qs. but error i'm getting the ecg file in text format. %clearing variables , screen enter code here clear all; close all; clc; [file1]=uigetfile('*.txt'); %fprintf('enter ecg file name :%s',file1); p=file1; t=sprintf('%s',p); b1=dlmread([file1]); len=length(b1); lead=input('enter lead number :'); %lead=str2double(lead); col2=b1(1:end,lead); e=fix(sqrt(len)); m=1; i=1:e j=1:e g2(i,j)=fix(col2(m)*1000); %amplifying 1000 m=m+1; end end g3=g2; i=1:e j=1:e
Read more

utf 8 - split utf-8 string into bytes in python -

i trying split utf-8 string bytes in python 3. problem is, when use bytearray, byte, encode etc functions array size of element 14 bytes, not 1 byte expected. need split text file sequence of bytes , send them byte after byte using sockets. tried this: infile = open (file, "r") str = infile.read() byte_str = bytes(str, 'utf-8') print("size of byte_str",sys.getsizeof(byte_str[0])) print gives me 14, need 1... suggestion? quoting official documentation : sys.getsizeof(object[, default]) return size of object in bytes. object can type of object. built-in objects return correct results, not have hold true third-party extensions implementation specific. only memory consumption directly attributed object accounted for, not memory consumption of objects refers to. if given, default returned if object not provide means retrieve size. otherwise typeerror raised. getsizeof() calls object’s __sizeof__ method , adds
Read more