http.c File Reference

Basic HTTP implementation. More...

#include "_hard_config.h"
#include "http.h"
#include "helper.h"
#include "log.h"
#include "network/network.h"
#include "url.h"

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Macros
#define	DEFAULT_BUFFER_SIZE   16384
#define	NWC_GET_BYTE(NWC, BUF, I)

Functions
struct http_response *	http_request_get_only_header (struct network_conn *nwc, char *url, char *host, size_t follow_redirect_steps)
	Send an HTTP request to host using nwc and reads the header. More...
struct http_response *	http_request_get (struct network_conn *nwc, char *url, char *host)
	Send an HTTP request and read the header along with the body. More...
void	http_response_destroy (struct http_response *resp)
	Free any data associated to the http_response. More...

Detailed Description

Basic HTTP implementation.

Macro Definition Documentation

#define DEFAULT_BUFFER_SIZE   16384

#define NWC_GET_BYTE	(		NWC,
			BUF,
			I
	)

Value:

{ \
        int byte = nwc->recv_byte(NWC); \
        if(-1 != byte) BUF[I] = byte;  \
        else { \
			_log("got EOF from ssL_recv_byte for byte %i", I); \
            return NULL; \
        } \
    }

Function Documentation

struct http_response* http_request_get	(	struct network_conn *	nwc,
		char *	url,
		char *	host
	)

Send an HTTP request and read the header along with the body.

Behaves similar to http_request_get_only_header(), but with the following differences:

• follow at max. MAX_REDIRECT_STEPS
• read everything the server sends (header + body)

Parameters

nwc	The network-connection to use
url	The URL to request.
host	The host.

Returns

A pointer to an http_response, or NULL in case of error.

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struct http_response* http_request_get_only_header	(	struct network_conn *	nwc,
		char *	url,
		char *	host,
		size_t	follow_redirect_steps
	)

Send an HTTP request to host using nwc and reads the header.

http_request_get_only_header() expects nwc to be connected to the correct server. The parameters url and host are only used for the request itself, as shown below:

GET <url> HTTP/1.1\r\n
Host: <host>\r\n\r\n

Take care: The returned http_response may contain a different nwc than the original passed one. In this case the body needs to be read from the returned http_response::nwc.

Parameters

nwc	The network-connection to use
url	The URL to request.
host	The host.
follow_redirect_steps	The number of redirects allowed (0 = disable rediects).

Returns

A pointer to an http_response, or NULL in case of error.

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void http_response_destroy

(

struct http_response *

resp

)

Free any data associated to the http_response.

This function only frees data, it does not free the connection nwc itself.

Parameters

resp	The http_response to free

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