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/*-
* Copyright 2012 Matthew Endsley
* All rights reserved
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted providing that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
Compiling example:
$ g++ -o example example.cpp
*/
#include <string>
#include <vector>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <unistd.h>
#include "http.h"
// directly embed the source here
extern "C" {
#include "http.c"
#include "header.c"
#include "chunk.c"
}
// return a socket connected to a hostname, or -1
int connectsocket(const char* host, int port)
{
addrinfo* result = NULL;
sockaddr_in addr = {0};
int s;
if (getaddrinfo(host, NULL, NULL, &result))
goto error;
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = INADDR_ANY;
for (addrinfo* ai = result; ai != NULL; ai = ai->ai_next) {
if (ai->ai_family != AF_INET)
continue;
const sockaddr_in *ai_in = (const sockaddr_in*)ai->ai_addr;
addr.sin_addr = ai_in->sin_addr;
break;
}
freeaddrinfo(result);
if (addr.sin_addr.s_addr == INADDR_ANY)
goto error;
s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s == -1)
goto error;
if (connect(s, (const sockaddr*)&addr, sizeof(addr)))
goto error;
return s;
error:
if (s != -1)
close(s);
if (result)
freeaddrinfo(result);
return -1;
}
// Response data/funcs
struct HttpResponse {
std::vector<char> body;
int code;
};
static void* response_realloc(void* opaque, void* ptr, int size)
{
return realloc(ptr, size);
}
static void response_body(void* opaque, const char* data, int size)
{
HttpResponse* response = (HttpResponse*)opaque;
response->body.insert(response->body.end(), data, data + size);
}
static void response_header(void* opaque, const char* ckey, int nkey, const char* cvalue, int nvalue)
{ /* example doesn't care about headers */ }
static void response_code(void* opaque, int code)
{
HttpResponse* response = (HttpResponse*)opaque;
response->code = code;
}
static const http_funcs responseFuncs = {
response_realloc,
response_body,
response_header,
response_code,
};
int main()
{
int conn = connectsocket("nothings.org", 80);
if (conn < 0) {
fprintf(stderr, "Failed to connect socket\n");
return -1;
}
const char request[] = "GET / HTTP/1.0\r\nContent-Length: 0\r\n\r\n";
int len = send(conn, request, sizeof(request) - 1, 0);
if (len != sizeof(request) - 1) {
fprintf(stderr, "Failed to send request\n");
close(conn);
return -1;
}
HttpResponse response;
response.code = 0;
http_roundtripper rt;
http_init(&rt, responseFuncs, &response);
bool needmore = true;
char buffer[1024];
while (needmore) {
const char* data = buffer;
int ndata = recv(conn, buffer, sizeof(buffer), 0);
if (ndata <= 0) {
fprintf(stderr, "Error receiving data\n");
http_free(&rt);
close(conn);
return -1;
}
while (needmore && ndata) {
int read;
needmore = http_data(&rt, data, ndata, &read);
ndata -= read;
data += read;
}
}
if (http_iserror(&rt)) {
fprintf(stderr, "Error parsing data\n");
http_free(&rt);
close(conn);
return -1;
}
http_free(&rt);
close(conn);
printf("Response: %d\n", response.code);
if (!response.body.empty()) {
printf("%s\n", &response.body[0]);
}
return 0;
}
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