Convert C++ to C# OpenSSL app

[OpenSSLGRT]

I just got Mr. Sanchez OpenSSL port to PDA (http://karajan.it.uc3m.es/~pervasive/wce_lite_compat/) – and it works great! I have a simple SSL Client in C++. Now I want to convert that to C#. I assume(???) that I would use the two DLLs but libeay32.dll and ssleay32.dll that I now have on the PDA. I know how to use simple dlls from C++ in C# but I am having trouble figuring out how to convert this more complicated program.  Any help would be greatly!!! Appretiated   A simple app (which I got a lot from a great source on the web!) in C++ posts vars to a server and works fine – now to get it into C# (I can get the C++ generic code translated OK it is just how do I get at the OpenSSL stuff like for example:  SSL_load_error_strings();   #include "stdafx.h" #include <stdio.h> #include <memory.h> #include <winsock2.h> #include <openssl/ssl.h> #include <openssl/err.h>   int _tmain(int argc, _TCHAR* argv[]) {       char buff1[65536];       char buff2[65536];       char head[1024];       char tmpstr[256];         //Regular (Windows) socket stuff       int sock;       struct sockaddr_in sa;       WSADATA myWSAData;         //SSL specific stuff       SSL_METHOD *meth = NULL;       SSL_CTX *ctx = NULL;       SSL *ssl = NULL;         //Create POST body.       strcpy(buff1, "body");         //Create POST header       char data[40];       strcpy(data, "var1=test1&var2=test2");       strcpy(head, "POST /testreceiver/receiver.aspx HTTP/1.0\r\n");       strcat(head, "Host: myserver.com\r\n");       strcat(head, "Content-Type: application/x-www-form-urlencoded\r\n");       strcat(head, "Content-Length: ");       sprintf(tmpstr, "%d", strlen(data));       strcat(head, tmpstr);       strcat(head, "\r\n");       strcat(head, "Referer: http://dev2/\r\n");       strcat(head, "\r\n");       strcat(head, data);       strcat(head, "\r\n\r\n");             //Connect socket       WSAStartup(MAKEWORD(2,2), &myWSAData);       sock = socket(AF_INET, SOCK_STREAM, 0);       memset (&sa, '\0', sizeof(sa));       sa.sin_family = AF_INET;       sa.sin_addr.s_addr = inet_addr("64.140.217.122");       sa.sin_port = htons(443);       connect(sock, (struct sockaddr*) &sa, sizeof(sa));         //Establish SSL       SSL_load_error_strings();       SSL_library_init();       meth = TLSv1_client_method();       ctx = SSL_CTX_new(meth);       ssl = SSL_new(ctx);       SSL_set_fd(ssl, sock);         //See section 5 of //http://www.rtfm.com/openssl-examples/part2.pdf       //We can get a list of supported ciphers using C:\OpenSSL\bin>openssl ciphers       SSL_set_cipher_list(ssl, "-a DES-CBC3-SHA");    //TLS_RSA_WITH_3DES_EDE_CBC_SHA                                                       //see http://www.openssl.org/docs/apps/ciphers.html         SSL_connect(ssl);         //POST       SSL_write(ssl, head, strlen(head));         memset(buff2, 0x00, sizeof(buff2)); //init recv buffer       SSL_read(ssl, buff2, sizeof(buff2) - 1); //read server response       printf("%s\n", buff2);                                            //Clean up       SSL_shutdown(ssl);       SSL_free(ssl);       SSL_CTX_free(ctx);       ERR_free_strings();         closesocket(sock);       WSACleanup();         //Keep cmd window open until user hits <return>       cin.get();         return 0; }