I''m triyng to create my own ssl lib with c++. I am trying to communicate with nexus.passport.com:443 but after I send a client_hello my connection ends abruptly. I''m sending my client hello structure inside a handshake structure which is at the same time inside a SSLPlainText structure, I dont know if I''m missing something. Please help me, thanks Diego Mendieta. here is some of my code: struct ClientHello { ProtocolVersion client_version; Random random; uint32 session_id; uint8 cipher_suites[2];//{ 0x00,0x01 }; uint8 compression_methods;//0 }; struct Handshake { uint8 msg_type; uint8 lenth[3]; ClientHello var; }; struct SSLPlainText { uint8 type; ProtocolVersion version; uint16 lenth; Handshake fragment; }; Remember this only for the client hello, I''m only trying to see if I understand the concept of ssl, and if I can send the first message and get an asnwer. The problem is that I cannot even do that, please help me.

Unless you are looking for a sequence diagram on how this can be done, I would recommend that you post your question to the following forum:

http://www.gamedev.net/community/forums/forum.asp?forum_id=21

quote:Original post by antareus
Be sure to disable structure padding via #pragma directives if you are planning on casting the structures to char* when you send them.

I would definetly agree, looks like another case of MSVC''s structure padding. Please add this to your code

//First line to add#pragma pack(1) //Tells MSVC to pack structs to 1 byte alignements rather than the default 4struct ClientHello {ProtocolVersion client_version;Random random;uint32 session_id;uint8 cipher_suites[2];//{ 0x00,0x01 };uint8 compression_methods;//0};struct Handshake {uint8 msg_type;uint8 lenth[3];ClientHello var;};struct SSLPlainText {uint8 type;ProtocolVersion version;uint16 lenth;Handshake fragment; };//Second line to add after your structs are defined#pragma pack() //Tells MSVC to use it''s default packing method (4 bytes).

I added the pragma and I still get diconected, there has to be another error. Please help me, thx
Diego Mendieta

I dont know what my problem could be, but maybe my problem is in the data inside the structure, here is the initial data, remember its only a try and many things are should only work for the first messeage(hello_client):

client_hello.client_version.major=3;
client_hello.client_version.minor=0;
client_hello.random.gmt_unix_time=0;
client_hello.random.random_bytes[0]=''q'';
client_hello.random.random_bytes[1]=''w'';
client_hello.random.random_bytes[2]=''g'';
client_hello.random.random_bytes[3]=''g'';
client_hello.random.random_bytes[4]=''h'';
client_hello.random.random_bytes[5]=''y'';
client_hello.random.random_bytes[6]=''i'';
client_hello.random.random_bytes[7]=''7'';
client_hello.random.random_bytes[8]=''t'';
client_hello.random.random_bytes[9]=''d'';
client_hello.random.random_bytes[10]=''g'';
client_hello.random.random_bytes[11]=''g'';
client_hello.random.random_bytes[12]=''y'';
client_hello.random.random_bytes[13]=''o'';
client_hello.random.random_bytes[14]=''p'';
client_hello.random.random_bytes[15]=''2'';
client_hello.random.random_bytes[16]=''x'';
client_hello.random.random_bytes[17]=''d'';
client_hello.random.random_bytes[18]=''t'';
client_hello.random.random_bytes[19]=''h'';
client_hello.random.random_bytes[20]=''j'';
client_hello.random.random_bytes[21]=''i'';
client_hello.random.random_bytes[22]=''7'';
client_hello.random.random_bytes[23]=''e'';
client_hello.random.random_bytes[24]=''s'';
client_hello.random.random_bytes[25]=''c'';
client_hello.random.random_bytes[26]=''f'';
client_hello.random.random_bytes[27]=''6'';
client_hello.random.random_bytes[28]=''y'';
client_hello.random.random_bytes[29]=''u'';
client_hello.random.random_bytes[30]=''i'';
client_hello.random.random_bytes[31]=''5'';

client_hello.compression_methods=0;
client_hello.session_id=0;
client_hello.cipher_suites[0]=0x00;
client_hello.cipher_suites[1]=0x01;

Handshake hs;
int a = sizeof(client_hello);
hs.lenth[0]=(char )0x00;
hs.lenth[1]=(char )0x00;
hs.lenth[2]=(char )0x30;

hs.msg_type=1;//clienthello;
hs.var=client_hello;

int size=sizeof(hs);
pack1.type=22;//handshake;
pack1.version.major=3;
pack1.version.minor=0;
pack1.lenth=size;

pack1.fragment=hs;


connect_to_server();
send(Socket,(char *)&pack1,sizeof(pack1),0);
recv(Socket,buffer,1023,0);
//here I recieve an empty string, and I''m disconnected from server.

Hold on, you''re sending random gibberish to an SSL server and complaining about being disconnected?

Neither do I see any encryption information in your code, so it looks like you''re sending garbage and the server responds appriopriately.

?
I''m not sending garbage, I''m sending the client_hello structure,this is inside a handshake structure, which is inside a packege, its not garbage. The info is wrong, that''s why I get disconected, but it is nos garbage.