parser/
parser.rs

1#![allow(unused_variables)]
2
3extern crate http_muncher;
4use std::str;
5
6// Include the 2 main public interfaces of the crate
7use http_muncher::{Parser, ParserHandler};
8
9// Now let's define a new listener for parser events:
10struct MyHandler;
11
12impl ParserHandler for MyHandler {
13
14    // Now we can define our callbacks here.
15    //
16    // Let's try to handle headers: the following callback function will be
17    // called when parser founds a header chunk in the HTTP stream.
18    fn on_header_field(&mut self, parser: &mut Parser, header: &[u8]) -> bool {
19        // Print the received header key part
20        println!("{}: ", str::from_utf8(header).unwrap());
21
22        // We have nothing to say to parser, and we'd like
23        // it to continue its work - so let's return "true".
24        true
25    }
26
27    // And let's print the header value chunks in a similar vein:
28    fn on_header_value(&mut self, parser: &mut Parser, value: &[u8]) -> bool {
29        println!("\t{}", str::from_utf8(value).unwrap());
30        true
31    }
32
33    
34
35}
36
37fn main() {
38    // Now we can create a parser instance with our callbacks handler:
39    let mut callbacks_handler = MyHandler {};
40    let mut parser = Parser::request();
41
42    // Let's define a mock HTTP request:
43    let http_request = "GET / HTTP/1.1\r\n\
44                        Content-Type: text/plain\r\n\
45                        Content-Length: 2\r\n\
46                        Hello: World\r\n\r\n\
47                        Hi";
48
49    // And now we're ready to go!
50    parser.parse(&mut callbacks_handler, http_request.as_bytes());
51
52    // Now that callbacks have been called, we can introspect
53    // the parsing results. For instance, print the HTTP version:
54    let (http_major, http_minor) = parser.http_version();
55    println!("\nHTTP v.{}.{}", http_major, http_minor);
56}
57
58// Now execute "cargo run", and as a result you should see this output:
59
60// Content-Type: 
61//	 text/plain
62// Content-Length: 
63//	 0
64// Hello: 
65// 	 World
66// 
67// HTTP v1.1
68
69// ... and the rest is almost the same - have fun experimenting!
parser/parser.rs

parser/
parser.rs
