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/*
*
* Copyright 2015-2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*
*/
#ifndef GRPC_CORE_LIB_HTTP_HTTPCLI_H
#define GRPC_CORE_LIB_HTTP_HTTPCLI_H
#include <stddef.h>
#include <grpc/support/time.h>
#include "src/core/lib/http/parser.h"
#include "src/core/lib/iomgr/endpoint.h"
#include "src/core/lib/iomgr/iomgr_internal.h"
#include "src/core/lib/iomgr/pollset_set.h"
/* User agent this library reports */
#define GRPC_HTTPCLI_USER_AGENT "grpc-httpcli/0.0"
/* Tracks in-progress http requests
TODO(ctiller): allow caching and capturing multiple requests for the
same content and combining them */
typedef struct grpc_httpcli_context {
grpc_pollset_set *pollset_set;
} grpc_httpcli_context;
typedef struct {
const char *default_port;
void (*handshake)(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *endpoint,
const char *host,
void (*on_done)(grpc_exec_ctx *exec_ctx, void *arg,
grpc_endpoint *endpoint));
} grpc_httpcli_handshaker;
extern const grpc_httpcli_handshaker grpc_httpcli_plaintext;
extern const grpc_httpcli_handshaker grpc_httpcli_ssl;
/* A request */
typedef struct grpc_httpcli_request {
/* The host name to connect to */
char *host;
/* The host to verify in the SSL handshake (or NULL) */
char *ssl_host_override;
/* The main part of the request
The following headers are supplied automatically and MUST NOT be set here:
Host, Connection, User-Agent */
grpc_http_request http;
/* handshaker to use ssl for the request */
const grpc_httpcli_handshaker *handshaker;
} grpc_httpcli_request;
/* Expose the parser response type as a httpcli response too */
typedef struct grpc_http_response grpc_httpcli_response;
/* Callback for grpc_httpcli_get and grpc_httpcli_post. */
typedef void (*grpc_httpcli_response_cb)(grpc_exec_ctx *exec_ctx,
void *user_data,
const grpc_http_response *response);
void grpc_httpcli_context_init(grpc_httpcli_context *context);
void grpc_httpcli_context_destroy(grpc_httpcli_context *context);
/* Asynchronously perform a HTTP GET.
'context' specifies the http context under which to do the get
'pollset' indicates a grpc_pollset that is interested in the result
of the get - work on this pollset may be used to progress the get
operation
'request' contains request parameters - these are caller owned and can be
destroyed once the call returns
'deadline' contains a deadline for the request (or gpr_inf_future)
'on_response' is a callback to report results to (and 'user_data' is a user
supplied pointer to pass to said call) */
void grpc_httpcli_get(grpc_exec_ctx *exec_ctx, grpc_httpcli_context *context,
grpc_pollset *pollset,
const grpc_httpcli_request *request,
gpr_timespec deadline,
grpc_httpcli_response_cb on_response, void *user_data);
/* Asynchronously perform a HTTP POST.
'context' specifies the http context under which to do the post
'pollset' indicates a grpc_pollset that is interested in the result
of the post - work on this pollset may be used to progress the post
operation
'request' contains request parameters - these are caller owned and can be
destroyed once the call returns
'body_bytes' and 'body_size' specify the payload for the post.
When there is no body, pass in NULL as body_bytes.
'deadline' contains a deadline for the request (or gpr_inf_future)
'em' points to a caller owned event manager that must be alive for the
lifetime of the request
'on_response' is a callback to report results to (and 'user_data' is a user
supplied pointer to pass to said call)
Does not support ?var1=val1&var2=val2 in the path. */
void grpc_httpcli_post(grpc_exec_ctx *exec_ctx, grpc_httpcli_context *context,
grpc_pollset *pollset,
const grpc_httpcli_request *request,
const char *body_bytes, size_t body_size,
gpr_timespec deadline,
grpc_httpcli_response_cb on_response, void *user_data);
/* override functions return 1 if they handled the request, 0 otherwise */
typedef int (*grpc_httpcli_get_override)(grpc_exec_ctx *exec_ctx,
const grpc_httpcli_request *request,
gpr_timespec deadline,
grpc_httpcli_response_cb on_response,
void *user_data);
typedef int (*grpc_httpcli_post_override)(
grpc_exec_ctx *exec_ctx, const grpc_httpcli_request *request,
const char *body_bytes, size_t body_size, gpr_timespec deadline,
grpc_httpcli_response_cb on_response, void *user_data);
void grpc_httpcli_set_override(grpc_httpcli_get_override get,
grpc_httpcli_post_override post);
#endif /* GRPC_CORE_LIB_HTTP_HTTPCLI_H */
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