blob: 955e5f97fbc9ca43a3d94de49159c145ebd76499 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
/************* Restget C++ Program Source Code File (.CPP) *************/
/* Adapted from the sample program of the Casablanca tutorial. */
/* Copyright Olivier Bertrand 2019. */
/***********************************************************************/
#include <cpprest/filestream.h>
#include <cpprest/http_client.h>
#if defined(MARIADB)
#include <my_global.h>
#else
#include "mini_global.h"
#endif
using namespace utility::conversions; // String conversions utilities
using namespace web; // Common features like URIs.
using namespace web::http; // Common HTTP functionality
using namespace web::http::client; // HTTP client features
using namespace concurrency::streams; // Asynchronous streams
#include "global.h"
/***********************************************************************/
/* Make a local copy of the requested file. */
/***********************************************************************/
int restGetFile(PGLOBAL g, PCSZ http, PCSZ uri, PCSZ fn)
{
int rc= 0;
auto fileStream= std::make_shared<ostream>();
if (!http || !fn) {
strcpy(g->Message, "Missing http or filename");
return 2;
} // endif
//std::string sfn(fn);
//auto wfn= to_string_t(sfn);
//rc= 0;
// Open stream to output file.
pplx::task<void> requestTask=
fstream::open_ostream(to_string_t(fn))
.then([=](ostream outFile) {
*fileStream= outFile;
// Create http_client to send the request.
http_client client(to_string_t(http));
if (uri)
{
// Build request URI and start the request.
uri_builder builder(to_string_t(uri));
return client.request(methods::GET, builder.to_string());
}
else
return client.request(methods::GET);
})
// Handle response headers arriving.
.then([=](http_response response) {
#if defined(DEVELOPMENT)
fprintf(stderr, "Received response status code:%u\n",
response.status_code());
#endif // DEVELOPMENT
// Write response body into the file.
return response.body().read_to_end(fileStream->streambuf());
})
// Close the file stream.
.then([=](size_t) { return fileStream->close(); });
// Wait for all the outstanding I/O to complete and handle any exceptions
try
{
requestTask.wait();
}
catch (const std::exception &e)
{
#if defined(DEVELOPMENT)
fprintf(stderr, "Error exception: %s\n", e.what());
#endif // DEVELOPMENT
sprintf(g->Message, "Error exception: %s", e.what());
rc= 1;
} // end try/catch
return rc;
} // end of restGetFile
|
