3 * Copyright 2019 gRPC authors.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
19 #import <RxLibrary/GRXWriter.h>
22 #pragma clang diagnostic push
23 #pragma clang diagnostic ignored "-Wnullability-completeness"
26 * This is the legacy interface of this gRPC library. This API is deprecated and users should use
27 * GRPCCall2 in GRPCCall.h. This API exists solely for the purpose of backwards compatibility.
28 * Represents a single gRPC remote call.
30 @interface GRPCCall : GRXWriter
32 - (instancetype)init NS_UNAVAILABLE;
35 * The container of the request headers of an RPC conforms to this protocol, which is a subset of
36 * NSMutableDictionary's interface. It will become a NSMutableDictionary later on.
37 * The keys of this container are the header names, which per the HTTP standard are case-
38 * insensitive. They are stored in lowercase (which is how HTTP/2 mandates them on the wire), and
39 * can only consist of ASCII characters.
40 * A header value is a NSString object (with only ASCII characters), unless the header name has the
41 * suffix "-bin", in which case the value has to be a NSData object.
44 * These HTTP headers will be passed to the server as part of this call. Each HTTP header is a
45 * name-value pair with string names and either string or binary values.
47 * The passed dictionary has to use NSString keys, corresponding to the header names. The value
48 * associated to each can be a NSString object or a NSData object. E.g.:
50 * call.requestHeaders = @{@"authorization": @"Bearer ..."};
52 * call.requestHeaders[@"my-header-bin"] = someData;
54 * After the call is started, trying to modify this property is an error.
56 * The property is initialized to an empty NSMutableDictionary.
58 @property(atomic, readonly) NSMutableDictionary *requestHeaders;
61 * This dictionary is populated with the HTTP headers received from the server. This happens before
62 * any response message is received from the server. It has the same structure as the request
63 * headers dictionary: Keys are NSString header names; names ending with the suffix "-bin" have a
64 * NSData value; the others have a NSString value.
66 * The value of this property is nil until all response headers are received, and will change before
67 * any of -writeValue: or -writesFinishedWithError: are sent to the writeable.
69 @property(atomic, readonly) NSDictionary *responseHeaders;
72 * Same as responseHeaders, but populated with the HTTP trailers received from the server before the
75 * The value of this property is nil until all response trailers are received, and will change
76 * before -writesFinishedWithError: is sent to the writeable.
78 @property(atomic, readonly) NSDictionary *responseTrailers;
81 * The request writer has to write NSData objects into the provided Writeable. The server will
82 * receive each of those separately and in order as distinct messages.
83 * A gRPC call might not complete until the request writer finishes. On the other hand, the request
84 * finishing doesn't necessarily make the call to finish, as the server might continue sending
85 * messages to the response side of the call indefinitely (depending on the semantics of the
86 * specific remote method called).
87 * To finish a call right away, invoke cancel.
88 * host parameter should not contain the scheme (http:// or https://), only the name or IP addr
89 * and the port number, for example @"localhost:5050".
91 - (instancetype)initWithHost:(NSString *)host
93 requestsWriter:(GRXWriter *)requestWriter;
96 * Finishes the request side of this call, notifies the server that the RPC should be cancelled, and
97 * finishes the response side of the call with an error of code CANCELED.
102 * The following methods are deprecated.
104 + (void)setCallSafety:(GRPCCallSafety)callSafety host:(NSString *)host path:(NSString *)path;
105 @property(atomic, copy, readwrite) NSString *serverName;
106 @property NSTimeInterval timeout;
107 - (void)setResponseDispatchQueue:(dispatch_queue_t)queue;
111 #pragma mark Backwards compatibiity
113 /** This protocol is kept for backwards compatibility with existing code. */
114 DEPRECATED_MSG_ATTRIBUTE("Use NSDictionary or NSMutableDictionary instead.")
115 @protocol GRPCRequestHeaders <NSObject>
116 @property(nonatomic, readonly) NSUInteger count;
118 - (id)objectForKeyedSubscript:(id)key;
119 - (void)setObject:(id)obj forKeyedSubscript:(id)key;
121 - (void)removeAllObjects;
122 - (void)removeObjectForKey:(id)key;
125 #pragma clang diagnostic push
126 #pragma clang diagnostic ignored "-Wdeprecated"
127 /** This is only needed for backwards-compatibility. */
128 @interface NSMutableDictionary (GRPCRequestHeaders) <GRPCRequestHeaders>
130 #pragma clang diagnostic pop
131 #pragma clang diagnostic pop