GCC Code Coverage Report

Directory: libs/http_proto/
File: boost/http_proto/request.hpp
Date: 2024-06-18 18:03:14
Exec Total Coverage
Lines: 37 38 97.4%
Functions: 12 12 100.0%
Branches: 0 0 -%
Line Branch Exec Source
1 //
2 // Copyright (c) 2021 Vinnie Falco (vinnie.falco@gmail.com)
3 //
4 // Distributed under the Boost Software License, Version 1.0. (See accompanying
5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 //
7 // Official repository: https://github.com/cppalliance/http_proto
8 //
9
10 #ifndef BOOST_HTTP_PROTO_REQUEST_HPP
11 #define BOOST_HTTP_PROTO_REQUEST_HPP
12
13 #include <boost/http_proto/detail/config.hpp>
14 #include <boost/http_proto/message_base.hpp>
15 #include <boost/http_proto/request_view.hpp>
16
17 namespace boost {
18 namespace http_proto {
19
20 /** Container for HTTP requests
21 */
22 class request final
23 : public message_base
24 {
25 public:
26 /** Constructor
27 */
28 BOOST_HTTP_PROTO_DECL
29 request() noexcept;
30
31 /** Constructor
32 */
33 BOOST_HTTP_PROTO_DECL
34 explicit
35 request(
36 core::string_view s);
37
38 /** Constructor
39
40 Construct a request container which allocates
41 `storage_size` bytes for storing the header.
42 Attempting to grow the container beyond
43 this amount will result in an exception.
44 The storage is also used internally to store
45 instances of an implementation-defined type.
46 The requested number of bytes will be aligned
47 accordingly (currently the alignment requirement is 4).
48
49 <br/>
50
51 This constructor is useful when an upper-bound size
52 of the request is known ahead of time and we want
53 to prevent reallocations.
54
55 <br/>
56
57 Passing an initial storage size of `0` does not
58 throw and the maximum capacity is set to an
59 implementation-defined limit observable via
60 @ref max_capacity_in_bytes().
61
62 @param storage_size The initial and final size of
63 the storage.
64
65 @code
66 boost::http_proto::request
67 make_request(std::string_view host)
68 {
69 std::size_t size = 4096;
70 // req.buffer() is now stable
71 boost::http_proto::request req(size);
72 BOOST_ASSERT(
73 req.max_capacity_in_bytes(), 4096);
74
75 // uses spare capacity so that reallocations
76 // are avoided
77 req.append(
78 boost::http_proto::field::host, host);
79 req.append(
80 boost::http_proto::field::connection, "close");
81 return req;
82 }
83 @endcode
84 */
85 BOOST_HTTP_PROTO_DECL
86 explicit
87 request(
88 std::size_t storage_size);
89
90 /** Constructor
91
92 Construct a request container which allocates
93 `storage_size` bytes for storing the header, with an
94 upper limit of `max_storage_size`. Attempting to
95 grow the container beyond its maximum will result in
96 an exception. The storage is also used internally to
97 store instances of an implementation-defined type.
98 Both values will be aligned accordingly (currently
99 the alignment requirement is 4).
100
101 <br/>
102
103 This constructor is useful when there's a best-fit
104 guess for an initial header size but we still wish
105 to permit reallocating and growing the container to
106 some upper limit.
107
108 <br/>
109
110 Passing an initial size of `0` does not throw.
111
112 @param storage_size The initial size of the storage.
113
114 @param max_storage_size The maximum size of the
115 allocated storage. Any operation that attempts to
116 grow the container beyond this value throws
117 `std::length_error`.
118
119 @throws std::length_error Thrown if `size > max_size`
120
121 @code
122 boost::http_proto::reqest
123 make_reqest(std::string_view host)
124 {
125 std::size_t size = 4096;
126 boost::http_proto::reqest req(size, 2 * size);
127 BOOST_ASSERT(
128 req.max_capacity_in_bytes(), 2 * 4096);
129
130 // uses spare capacity so that reallocations
131 // are avoided
132 req.append(
133 boost::http_proto::field::host, host);
134 req.append(
135 boost::http_proto::field::connection, "close");
136 return req;
137 }
138 @endcode
139 */
140 BOOST_HTTP_PROTO_DECL
141 request(
142 std::size_t storage_size,
143 std::size_t max_storage_size);
144
145 /** Constructor
146
147 The moved-from object will be
148 left in the default-constructed
149 state.
150 */
151 BOOST_HTTP_PROTO_DECL
152 request(request&& other) noexcept;
153
154 /** Constructor
155 */
156 BOOST_HTTP_PROTO_DECL
157 request(request const& other);
158
159 /** Constructor
160 */
161 BOOST_HTTP_PROTO_DECL
162 request(
163 request_view const& other);
164
165 /** Assignment
166 */
167 BOOST_HTTP_PROTO_DECL
168 request&
169 operator=(request&&) noexcept;
170
171 /** Assignment
172 */
173 request&
174 4 operator=(request const& other)
175 {
176 4 copy_impl(*other.ph_);
177 4 return *this;
178 }
179
180 /** Assignment
181 */
182 request&
183 operator=(
184 request_view const& other)
185 {
186 copy_impl(*other.ph_);
187 return *this;
188 }
189
190 /** Return a read-only view to the request
191 */
192 2 operator
193 request_view() const noexcept
194 {
195 2 return request_view(ph_);
196 }
197
198 //--------------------------------------------
199 //
200 // Observers
201 //
202 //--------------------------------------------
203
204 /** Return the method as an integral constant
205
206 If the method returned is equal to
207 @ref method::unknown, the method may
208 be obtained as a string instead, by
209 calling @ref method_text.
210 */
211 http_proto::method
212 19 method() const noexcept
213 {
214 19 return ph_->req.method;
215 }
216
217 /** Return the method as a string
218 */
219 core::string_view
220 26 method_text() const noexcept
221 {
222 52 return core::string_view(
223 26 ph_->cbuf,
224 26 ph_->req.method_len);
225 }
226
227 /** Return the request-target string
228 */
229 core::string_view
230 19 target() const noexcept
231 {
232 38 return core::string_view(
233 19 ph_->cbuf +
234 19 ph_->req.method_len + 1,
235 19 ph_->req.target_len);
236 }
237
238 /** Return the HTTP-version
239 */
240 http_proto::version
241 27 version() const noexcept
242 {
243 27 return ph_->version;
244 }
245
246 //--------------------------------------------
247 //
248 // Modifiers
249 //
250 //--------------------------------------------
251
252 /** Set the method of the request to the enum
253 */
254 void
255 2 set_method(
256 http_proto::method m)
257 {
258 2 set_impl(
259 m,
260 to_string(m),
261 target(),
262 version());
263 2 }
264
265 /** Set the method of the request to the string
266 */
267 void
268 6 set_method(
269 core::string_view s)
270 {
271 6 set_impl(
272 string_to_method(s),
273 s,
274 target(),
275 version());
276 6 }
277
278 /** Set the target string of the request
279
280 This function sets the request-target.
281 The caller is responsible for ensuring
282 that the string passed is syntactically
283 valid.
284 */
285 void
286 5 set_target(
287 core::string_view s)
288 {
289 5 set_impl(
290 5 ph_->req.method,
291 method_text(),
292 s,
293 version());
294 5 }
295
296 /** Set the HTTP version of the request
297 */
298 void
299 2 set_version(
300 http_proto::version v)
301 {
302 2 set_impl(
303 2 ph_->req.method,
304 method_text(),
305 target(),
306 v);
307 2 }
308
309 /** Set the method, target, and version of the request
310
311 This is more efficient than setting the
312 properties individually.
313 */
314 void
315 1 set_start_line(
316 http_proto::method m,
317 core::string_view t,
318 http_proto::version v)
319 {
320 1 set_impl(m, to_string(m), t, v);
321 ✗ }
322
323 /** Set the method, target, and version of the request
324
325 This is more efficient than setting the
326 properties individually.
327 */
328 void
329 set_start_line(
330 core::string_view m,
331 core::string_view t,
332 http_proto::version v)
333 {
334 set_impl(string_to_method(m), m, t, v);
335 }
336
337 /** Set the Expect header
338 */
339 BOOST_HTTP_PROTO_DECL
340 void
341 set_expect_100_continue(bool b);
342
343 //--------------------------------------------
344
345 /** Swap this with another instance
346 */
347 void
348 44 swap(request& other) noexcept
349 {
350 44 h_.swap(other.h_);
351 44 }
352
353 /** Swap two instances
354 */
355 // hidden friend
356 friend
357 void
358 swap(
359 request& t0,
360 request& t1) noexcept
361 {
362 t0.swap(t1);
363 }
364
365 private:
366 BOOST_HTTP_PROTO_DECL
367 void
368 set_impl(
369 http_proto::method m,
370 core::string_view ms,
371 core::string_view t,
372 http_proto::version v);
373 };
374
375 } // http_proto
376 } // boost
377
378 #endif
379