自定义重试次数没有生效

[joke-lee]

#include <iostream>
#include <string>
//#include <braft/protobuf_file.h>
//#include <braft/raft.h>
//#include <braft/route_table.h>
//#include <braft/storage.h>
//#include <braft/util.h>
//#include <braft/cli.h>
//#include <braft/cli.pb.h>
#include <brpc/channel.h>
#include <brpc/controller.h>
#include <brpc/server.h>
#include <bthread/bthread.h>
#include <butil/logging.h>
#include <bvar/bvar.h>

using namespace std;

int main() {
  brpc::ChannelOptions options;
  options.protocol = "http";
  options.max_retry = 100;
  options.connect_timeout_ms = 30;
  options.timeout_ms = 1000;
  string endpoint = "10.0.0.1:8000";
  brpc::Channel channel;
  brpc::Controller cntl;
  cntl.set_max_retry(30);
  if (channel.Init(endpoint.c_str(), "", &options) != 0) {
    return 0;
  }
  cntl.http_request().uri() = endpoint;  // Request URL
  cntl.http_request().set_method(brpc::HTTP_METHOD_GET);
  channel.CallMethod(NULL, &cntl, NULL, NULL, NULL/*done*/);
  if (cntl.Failed()) {
//cntl.ErrorCode() != brpc::EHTTP
    std::cout << " cntl.max_retry=" << cntl.max_retry()
      << " retry_count=" << cntl.retried_count() << " ErrorText=" << cntl.ErrorText() << ", ErrorCode=" << cntl.ErrorCode() << std::endl;
  } else {
    std::cout << "success" << std::endl;
  }
  return 0;
}

设置一个网络不可达的地址 10.0.0.1:8000

上面设置了重试 30 次，但是实际测试结果只有重试 2 次

cntl.max_retry=30 retry_count=2 ErrorText=[E110]Fail to connect Socket{id=1 addr=10.0.0.1:8000} (0x0x1815a00): Connection timed out [R1][E110]Fail to connect Socket{id=102 addr=10.0.0.1:8000} (0x0x7f7d7c00bfa0): Connection timed out [R2][E101]Fail to connect Socket{id=8589934594 addr=10.0.0.1:8000} (0x0x1815c80): Network is unreachable, ErrorCode=101

但是重试设置 1 次

#include <iostream>
#include <string>
//#include <braft/protobuf_file.h>
//#include <braft/raft.h>
//#include <braft/route_table.h>
//#include <braft/storage.h>
//#include <braft/util.h>
//#include <braft/cli.h>
//#include <braft/cli.pb.h>
#include <brpc/channel.h>
#include <brpc/controller.h>
#include <brpc/server.h>
#include <bthread/bthread.h>
#include <butil/logging.h>
#include <bvar/bvar.h>

using namespace std;

int main() {
  brpc::ChannelOptions options;
  options.protocol = "http";
  options.max_retry = 100;
  options.connect_timeout_ms = 1;
  options.timeout_ms = 1000;
  string endpoint = "10.0.0.1:8000";
  brpc::Channel channel;
  brpc::Controller cntl;
  cntl.set_max_retry(1);
  if (channel.Init(endpoint.c_str(), "", &options) != 0) {
    return 0;
  }
  cntl.http_request().uri() = endpoint;  // Request URL
  cntl.http_request().set_method(brpc::HTTP_METHOD_GET);
  channel.CallMethod(NULL, &cntl, NULL, NULL, NULL/*done*/);
  if (cntl.Failed()) {
//cntl.ErrorCode() != brpc::EHTTP
    std::cout << " cntl.max_retry=" << cntl.max_retry()
      << " retry_count=" << cntl.retried_count() << " ErrorText=" << cntl.ErrorText() << ", ErrorCode=" << cntl.ErrorCode() << std::endl;
  } else {
    std::cout << "success" << std::endl;
  }
  return 0;
}

看报错信息是符合预期，只重试了一次

/root/CLionProjects/untitled/cmake-build-debug/untitled
 cntl.max_retry=1 retry_count=1 ErrorText=[E110]Fail to connect Socket{id=1 addr=10.0.0.1:8000} (0x0xb11a00): Connection timed out [R1][E110]Fail to connect Socket{id=102 addr=10.0.0.1:8000} (0x0x7f092800c020): Connection timed out, ErrorCode=110

Process finished with exit code 0

是不是重试次数只能是 0 1 2 才有效果？，即使设置重试的大于 3 次，最多也只能重试 2 次？

[joke-lee]

@chenBright 用的是 apache-brpc-1.8.0-src ，能帮忙看看么？

[chenBright]

#2295 不可达不重试。