Sending HTTP Packets (Help)

[barneystinson19]

Hi,
What I want to do is to sending http packets to a host then get the response from server.
In php I can do it with two functions named fsockopen() and fputs() :

Code: Select all

/* HTTP PACKET */
$packet .= "GET /path/file.html HTTP/1.0\r\n";
$packet .= "From: something@something.com\r\n";
$packet .= "User-Agent: HTTPTool/1.0\r\n";
/* Sending packet to host */
$connection = fsockopen($host,$port);
fputs($connection, $packet);
/* Getting response */
$response = fgets($connection);
echo $response;


How can I do exactly something like this in vb.net?

[centip3de]

Hi,
What I want to do is to sending http packets to a host then get the response from server.
In php I can do it with two functions named fsockopen() and fputs() :

Code: Select all

/* HTTP PACKET */
$packet .= "GET /path/file.html HTTP/1.0\r\n";
$packet .= "From: something@something.com\r\n";
$packet .= "User-Agent: HTTPTool/1.0\r\n";
/* Sending packet to host */
$connection = fsockopen($host,$port);
fputs($connection, $packet);
/* Getting response */
$response = fgets($connection);
echo $response;


How can I do exactly something like this in vb.net?

I can't speak about VB.NET personally (and neither can the majority of those on these forums), but I can speak for the general concept behind it. The difference between VB.NET and PHP is that PHP is executed on a server. Thus, you don't need to write a server in order to send data via a network, you just need to write your basic PHP code. However, in the majority of programming languages you would need to write a server, then write a client, then connect the client to the server, then send data through the server to the client (or visa versa). This sounds much more complicated than it generally is, and can be accomplished with probably around 100-200 lines of Python (Once again, can't speak for VB.NET).

[barneystinson19]

Hi,
What I want to do is to sending http packets to a host then get the response from server.
In php I can do it with two functions named fsockopen() and fputs() :

Code: Select all

/* HTTP PACKET */
$packet .= "GET /path/file.html HTTP/1.0\r\n";
$packet .= "From: something@something.com\r\n";
$packet .= "User-Agent: HTTPTool/1.0\r\n";
/* Sending packet to host */
$connection = fsockopen($host,$port);
fputs($connection, $packet);
/* Getting response */
$response = fgets($connection);
echo $response;


How can I do exactly something like this in vb.net?

I can't speak about VB.NET personally (and neither can the majority of those on these forums), but I can speak for the general concept behind it. The difference between VB.NET and PHP is that PHP is executed on a server. Thus, you don't need to write a server in order to send data via a network, you just need to write your basic PHP code. However, in the majority of programming languages you would need to write a server, then write a client, then connect the client to the server, then send data through the server to the client (or visa versa). This sounds much more complicated than it generally is, and can be accomplished with probably around 100-200 lines of Python (Once again, can't speak for VB.NET).

First of all thanks for answering that quick Isn't it possible to send a http packet to an apache server without creating a client?

[centip3de]

First of all thanks for answering that quick Isn't it possible to send a http packet to an apache server without creating a client?

VB.NET might have something specific for this, but as far as I know, no.

[barneystinson19]

First of all thanks for answering that quick Isn't it possible to send a http packet to an apache server without creating a client?

VB.NET might have something specific for this, but as far as I know, no.

I think I might found something;
http://msdn.microsoft.com/en-us/library ... snippet-27
I'll try it thanks for answers

[WallShadow]

Hi,

Code: Select all

/* HTTP PACKET */
$packet .= "GET /path/file.html HTTP/1.0\r\n";
$packet .= "From: something@something.com\r\n";
$packet .= "User-Agent: HTTPTool/1.0\r\n";
/* Sending packet to host */
$connection = fsockopen($host,$port);
fputs($connection, $packet);
/* Getting response */
$response = fgets($connection);
echo $response;


There is no such thing as an HTTP packet, HTTP works on a different level of the OSI model. That, what you are doing is sending an HTTP request. Unbeknownst to you, you are sending multiple TCP/IP packets which effectively transmit your HTTP request. Please remember that for the future <3

[barneystinson19]

Hi,

Code: Select all

/* HTTP PACKET */
$packet .= "GET /path/file.html HTTP/1.0\r\n";
$packet .= "From: something@something.com\r\n";
$packet .= "User-Agent: HTTPTool/1.0\r\n";
/* Sending packet to host */
$connection = fsockopen($host,$port);
fputs($connection, $packet);
/* Getting response */
$response = fgets($connection);
echo $response;


There is no such thing as an HTTP packet, HTTP works on a different level of the OSI model. That, what you are doing is sending an HTTP request. Unbeknownst to you, you are sending multiple TCP/IP packets which effectively transmit your HTTP request. Please remember that for the future <3

That was what I meant sorry about my bad english ^^

-- Wed Feb 06, 2013 6:24 pm --

How can I upload files with post request in vb.net?

[fashizzlepop]

I can't speak about VB.NET personally (and neither can the majority of those on these forums), but I can speak for the general concept behind it. The difference between VB.NET and PHP is that PHP is executed on a server. Thus, you don't need to write a server in order to send data via a network, you just need to write your basic PHP code. However, in the majority of programming languages you would need to write a server, then write a client, then connect the client to the server, then send data through the server to the client (or visa versa). This sounds much more complicated than it generally is, and can be accomplished with probably around 100-200 lines of Python (Once again, can't speak for VB.NET).

Sorry, cent, but you're wrong. To just send and receive HTTP requests you only have to open a socket and send the data appropriately. No server needed on your end.

I have no idea how to go about this in VB.net. With that said, if you can figure out how to do ANY HTTP requests, you should be able to do a post or get by just constructing your header and request properly.

Here's the RFC but it's kinda bulky.

This might be easier to understand.

Otherwise Google HTTP Requests (optionally add in VB.net to your search).

[barneystinson19]

I can't speak about VB.NET personally (and neither can the majority of those on these forums), but I can speak for the general concept behind it. The difference between VB.NET and PHP is that PHP is executed on a server. Thus, you don't need to write a server in order to send data via a network, you just need to write your basic PHP code. However, in the majority of programming languages you would need to write a server, then write a client, then connect the client to the server, then send data through the server to the client (or visa versa). This sounds much more complicated than it generally is, and can be accomplished with probably around 100-200 lines of Python (Once again, can't speak for VB.NET).

Sorry, cent, but you're wrong. To just send and receive HTTP requests you only have to open a socket and send the data appropriately. No server needed on your end.

I have no idea how to go about this in VB.net. With that said, if you can figure out how to do ANY HTTP requests, you should be able to do a post or get by just constructing your header and request properly.

Here's the RFC but it's kinda bulky.

This might be easier to understand.

Otherwise Google HTTP Requests (optionally add in VB.net to your search).

Thanks that helped alot about HTTP Requests But I still don't know how to send packets in vb.net like the php example. I found something about webrequest in vb.net but its not the exact way I want :/ Anyway thanks for your answers I'll keep searching

[centip3de]

Sorry, cent, but you're wrong. To just send and receive HTTP requests you only have to open a socket and send the data appropriately. No server needed on your end.

I have no idea how to go about this in VB.net. With that said, if you can figure out how to do ANY HTTP requests, you should be able to do a post or get by just constructing your header and request properly.

Here's the RFC but it's kinda bulky.

This might be easier to understand.

Otherwise Google HTTP Requests (optionally add in VB.net to your search).

I suppose it's all about how you define a server; in my mind, a server is something that takes and handles incoming requests, and unless you plan on sending data to nothing, you're going to need some version of a server. Granted you can send them to already set up servers, but you would still need a server.