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Description
The following toy implementation shows how execution of INFO command using current RESP3 support in master fails with error Protocol error, got "=" as reply type byte. This has been tested using Redis Server 6.0.1. Same logic using RESP2 works as expected.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <hiredis/hiredis.h>
#define HOST "127.0.0.1"
#define PORT 6400
static redisContext *connect(unsigned version)
{
redisContext *ctx = redisConnect(HOST, PORT);
assert(ctx != NULL);
if (ctx->err) {
printf("CONNECT: %s\n", ctx->errstr);
}
assert(ctx != NULL && !ctx->err);
redisReply *reply = redisCommand(ctx, "HELLO %d", version);
if (ctx->err) {
printf("HELLO: %s\n", ctx->errstr);
}
assert(
!ctx->err && reply != NULL &&
((version == 2 && reply->type == REDIS_REPLY_ARRAY) ||
(version == 3 && reply->type == REDIS_REPLY_MAP)));
freeReplyObject(reply);
return ctx;
}
int
main(int argc, char *argv[])
{
redisContext *ctx = connect(3);
redisReply *reply = redisCommand(ctx, "INFO");
if (ctx->err) {
printf("INFO: %s\n", ctx->errstr);
}
assert(!ctx->err && reply != NULL);
printf("%s\n", reply->str);
freeReplyObject(reply);
}
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