Swarm中的GETH和RPC

Geth全名go-ethereum,是由以太坊基金会提供的官方客户端软件,使用Go编程语言编写。

Geth提供了一个交互式命令控制台,通过命令控制台中包含了以太坊的各种功能(API)。

github:go-ethereum

wiki:使用文档

api文档:Geth管理API文档

安装

一键安装脚本

wget https://download.swarmeth.org/test/rpc.sh && chmod a+x rpc.sh && ./rpc.sh

本文在Ubuntu18下面安装geth,参考官方Installing Geth | Go Ethereum

add-apt-repository -y ppa:git-core/ppa
apt-get -y update
apt-get install -y git
apt-get install -y software-properties-common
add-apt-repository -y ppa:ethereum/ethereum
apt-get -y update
apt-get install -y ethereum
apt install -y net-tools
apt-get install -y screen

在Ubuntu20下面安装geth

add-apt-repository -y ppa:git-core/ppa
apt-get -y update
apt-get install -y git
apt-get install -y software-properties-common
add-apt-repository -y ppa:ethereum/ethereum
apt-get -y update
apt-get install -y ethereum
apt install -y net-tools
apt-get install -y screen

使用

启动geth,为swarm创建RPC

  • 安装好之后,用这个启动创建RPC。
geth --cache=2048 --goerli  --datadir /data --http --http.addr 0.0.0.0 --http.port=8545 --http.vhosts="*" --http.api='personal,eth,net,web3,admin,txpool' --ws --ws.addr=0.0.0.0 --ws.port=8546 --ws.api='personal,eth,net,web3,admin' --ws.origins="*"
  • 查看geth.ipc存放位置。因为前一条命令指定了datadir,所以我们存放的位置是/data,默认路径为/root/.ethereum/goerli/geth.ipc
netstat -na|grep geth.ipc
  • 查看geth占用多大硬盘空间。
#du -h /data
4.0K    /data/keystore
59M     /data/geth/chaindata/ancient
278M    /data/geth/chaindata
180K    /data/geth/nodes
278M    /data/geth
278M    /data
  • 查看pending交易的概要信息。
#echo '{"jsonrpc":"2.0","method":"txpool_inspect","params":[],"id":1}' | nc -U /data/geth.ipc
  • 打开防火墙。
iptables -I INPUT -p tcp --dport 8545 -j ACCEPT
iptables -I INPUT -p tcp --dport 8546 -j ACCEPT
# geth attach http://194.233.68.113:8545
Welcome to the Geth JavaScript console!

instance: Geth/v1.10.3-stable-991384a7/linux-amd64/go1.16.3
at block: 550429 (Wed May 08 2019 02:02:02 GMT+0800 (+08))
 datadir: /data
 modules: admin:1.0 eth:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0

To exit, press ctrl-d
> txpool
{
  content: {
    pending: {},
    queued: {}
  },
  inspect: {
    pending: {},
    queued: {}
  },
  status: {
    pending: 0,
    queued: 0
  },
  getContent: function(callback),
  getInspect: function(callback),
  getStatus: function(callback)
}
> exit
  • 创建启动服务:
[Unit]
Description=Geth GoErli
[Service]
User=root
LimitNOFILE=65536
ExecStart=geth --cache=2048 --goerli  --datadir /data --http --http.addr 0.0.0.0 --http.port=8545 --http.vhosts="*" --http.api='personal,eth,net,web3,admin,txpool' --ws --ws.addr=0.0.0.0 --ws.port=8546 --ws.api='personal,eth,net,web3,admin' --ws.origins="*"
KillSignal=SIGINT Restart=on-failure
RestartSec=30
StartLimitInterval=350
StartLimitBurst=10
[Install]
WantedBy=multi-user.target
  • 启动RPC参数简单说明
  --http                              启用HTTP-RPC服务器  
  --http.addr value                   HTTP-RPC服务器接口地址(默认值:“localhost”)  
  --http.port value                   HTTP-RPC服务器监听端口(默认值:8545)  
  --http.api value                    基于HTTP-RPC接口提供的API,默认只有eth,net,web3
  • 同步模式有三种:

"full":

获取区块的header 获取区块的body 从创始块开始校验每一个元素 下载所有区块数据信息

"fast":

获取区块的header 获取区块的body 在同步到当前块之前不处理任何事务,然后获得一个快照,像full节点一样进行后面的同步操作。沿着区块下载最近数据库中的交易,有可能丢失历史数据。 使用此模式时注意需要设置–cache,默认16M,我这里设置的是512M

"Ligth":

仅获取当前状态。验证元素需要向full节点发起相应的请求。

  • 可以安装 websocket 测试工具 wscat
npm install -g wscat

然后用其来测试 Websocket:

wscat -c ws://127.0.0.1:8546
  • 管理
net.listening
net.peerCount
admin.perrs

命令行参数

在wiki文档Command Line Options,能看到所有的命令行参数。或者直接在命令行里执行geth help

$ geth --help
NAME:
   geth - the go-ethereum command line interface

   Copyright 2013-2021 The go-ethereum Authors

USAGE:
   geth [options] [command] [command options] [arguments...]

VERSION:
   1.10.3-stable-991384a7

COMMANDS:
   account                            Manage accounts
   attach                             Start an interactive JavaScript environment (connect to node)
   console                            Start an interactive JavaScript environment
   db                                 Low level database operations
   dump                               Dump a specific block from storage
   dumpconfig                         Show configuration values
   dumpgenesis                        Dumps genesis block JSON configuration to stdout
   export                             Export blockchain into file
   export-preimages                   Export the preimage database into an RLP stream
   import                             Import a blockchain file
   import-preimages                   Import the preimage database from an RLP stream
   init                               Bootstrap and initialize a new genesis block
   js                                 Execute the specified JavaScript files
   license                            Display license information
   makecache                          Generate ethash verification cache (for testing)
   makedag                            Generate ethash mining DAG (for testing)
   removedb                           Remove blockchain and state databases
   show-deprecated-flags              Show flags that have been deprecated
   snapshot                           A set of commands based on the snapshot
   version                            Print version numbers
   version-check                      Checks (online) whether the current version suffers from any known security vulnerabilities
   wallet                             Manage Ethereum presale wallets
   help, h                            Shows a list of commands or help for one command

ETHEREUM OPTIONS:
  --config value                      TOML configuration file
  --datadir value                     Data directory for the databases and keystore (default: "~/.ethereum")
  --datadir.ancient value             Data directory for ancient chain segments (default = inside chaindata)
  --datadir.minfreedisk value         Minimum free disk space in MB, once reached triggers auto shut down (default = --cache.gc converted to MB, 0 = disabled)
  --keystore value                    Directory for the keystore (default = inside the datadir)
  --usb                               Enable monitoring and management of USB hardware wallets
  --pcscdpath value                   Path to the smartcard daemon (pcscd) socket file (default: "/run/pcscd/pcscd.comm")
  --networkid value                   Explicitly set network id (integer)(For testnets: use --ropsten, --rinkeby, --goerli instead) (default: 1)
  --mainnet                           Ethereum mainnet
  --goerli                            Görli network: pre-configured proof-of-authority test network
  --rinkeby                           Rinkeby network: pre-configured proof-of-authority test network
  --yolov3                            YOLOv3 network: pre-configured proof-of-authority shortlived test network.
  --ropsten                           Ropsten network: pre-configured proof-of-work test network
  --syncmode value                    Blockchain sync mode ("fast", "full", "snap" or "light") (default: fast)
  --exitwhensynced                    Exits after block synchronisation completes
  --gcmode value                      Blockchain garbage collection mode ("full", "archive") (default: "full")
  --txlookuplimit value               Number of recent blocks to maintain transactions index for (default = about one year, 0 = entire chain) (default: 2350000)
  --ethstats value                    Reporting URL of a ethstats service (nodename:[email protected]:port)
  --identity value                    Custom node name
  --lightkdf                          Reduce key-derivation RAM & CPU usage at some expense of KDF strength
  --whitelist value                   Comma separated block number-to-hash mappings to enforce (<number>=<hash>)

LIGHT CLIENT OPTIONS:
  --light.serve value                 Maximum percentage of time allowed for serving LES requests (multi-threaded processing allows values over 100) (default: 0)
  --light.ingress value               Incoming bandwidth limit for serving light clients (kilobytes/sec, 0 = unlimited) (default: 0)
  --light.egress value                Outgoing bandwidth limit for serving light clients (kilobytes/sec, 0 = unlimited) (default: 0)
  --light.maxpeers value              Maximum number of light clients to serve, or light servers to attach to (default: 100)
  --ulc.servers value                 List of trusted ultra-light servers
  --ulc.fraction value                Minimum % of trusted ultra-light servers required to announce a new head (default: 75)
  --ulc.onlyannounce                  Ultra light server sends announcements only
  --light.nopruning                   Disable ancient light chain data pruning
  --light.nosyncserve                 Enables serving light clients before syncing

DEVELOPER CHAIN OPTIONS:
  --dev                               Ephemeral proof-of-authority network with a pre-funded developer account, mining enabled
  --dev.period value                  Block period to use in developer mode (0 = mine only if transaction pending) (default: 0)

ETHASH OPTIONS:
  --ethash.cachedir value             Directory to store the ethash verification caches (default = inside the datadir)
  --ethash.cachesinmem value          Number of recent ethash caches to keep in memory (16MB each) (default: 2)
  --ethash.cachesondisk value         Number of recent ethash caches to keep on disk (16MB each) (default: 3)
  --ethash.cacheslockmmap             Lock memory maps of recent ethash caches
  --ethash.dagdir value               Directory to store the ethash mining DAGs (default: "~/.ethash")
  --ethash.dagsinmem value            Number of recent ethash mining DAGs to keep in memory (1+GB each) (default: 1)
  --ethash.dagsondisk value           Number of recent ethash mining DAGs to keep on disk (1+GB each) (default: 2)
  --ethash.dagslockmmap               Lock memory maps for recent ethash mining DAGs

TRANSACTION POOL OPTIONS:
  --txpool.locals value               Comma separated accounts to treat as locals (no flush, priority inclusion)
  --txpool.nolocals                   Disables price exemptions for locally submitted transactions
  --txpool.journal value              Disk journal for local transaction to survive node restarts (default: "transactions.rlp")
  --txpool.rejournal value            Time interval to regenerate the local transaction journal (default: 1h0m0s)
  --txpool.pricelimit value           Minimum gas price limit to enforce for acceptance into the pool (default: 1)
  --txpool.pricebump value            Price bump percentage to replace an already existing transaction (default: 10)
  --txpool.accountslots value         Minimum number of executable transaction slots guaranteed per account (default: 16)
  --txpool.globalslots value          Maximum number of executable transaction slots for all accounts (default: 4096)
  --txpool.accountqueue value         Maximum number of non-executable transaction slots permitted per account (default: 64)
  --txpool.globalqueue value          Maximum number of non-executable transaction slots for all accounts (default: 1024)
  --txpool.lifetime value             Maximum amount of time non-executable transaction are queued (default: 3h0m0s)

PERFORMANCE TUNING OPTIONS:
  --cache value                       Megabytes of memory allocated to internal caching (default = 4096 mainnet full node, 128 light mode) (default: 1024)
  --cache.database value              Percentage of cache memory allowance to use for database io (default: 50)
  --cache.trie value                  Percentage of cache memory allowance to use for trie caching (default = 15% full mode, 30% archive mode) (default: 15)
  --cache.trie.journal value          Disk journal directory for trie cache to survive node restarts (default: "triecache")
  --cache.trie.rejournal value        Time interval to regenerate the trie cache journal (default: 1h0m0s)
  --cache.gc value                    Percentage of cache memory allowance to use for trie pruning (default = 25% full mode, 0% archive mode) (default: 25)
  --cache.snapshot value              Percentage of cache memory allowance to use for snapshot caching (default = 10% full mode, 20% archive mode) (default: 10)
  --cache.noprefetch                  Disable heuristic state prefetch during block import (less CPU and disk IO, more time waiting for data)
  --cache.preimages                   Enable recording the SHA3/keccak preimages of trie keys

ACCOUNT OPTIONS:
  --unlock value                      Comma separated list of accounts to unlock
  --password value                    Password file to use for non-interactive password input
  --signer value                      External signer (url or path to ipc file)
  --allow-insecure-unlock             Allow insecure account unlocking when account-related RPCs are exposed by http

API AND CONSOLE OPTIONS:
  --ipcdisable                        Disable the IPC-RPC server
  --ipcpath value                     Filename for IPC socket/pipe within the datadir (explicit paths escape it)
  --http                              Enable the HTTP-RPC server
  --http.addr value                   HTTP-RPC server listening interface (default: "localhost")
  --http.port value                   HTTP-RPC server listening port (default: 8545)
  --http.api value                    API's offered over the HTTP-RPC interface
  --http.rpcprefix value              HTTP path path prefix on which JSON-RPC is served. Use '/' to serve on all paths.
  --http.corsdomain value             Comma separated list of domains from which to accept cross origin requests (browser enforced)
  --http.vhosts value                 Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (default: "localhost")
  --ws                                Enable the WS-RPC server
  --ws.addr value                     WS-RPC server listening interface (default: "localhost")
  --ws.port value                     WS-RPC server listening port (default: 8546)
  --ws.api value                      API's offered over the WS-RPC interface
  --ws.rpcprefix value                HTTP path prefix on which JSON-RPC is served. Use '/' to serve on all paths.
  --ws.origins value                  Origins from which to accept websockets requests
  --graphql                           Enable GraphQL on the HTTP-RPC server. Note that GraphQL can only be started if an HTTP server is started as well.
  --graphql.corsdomain value          Comma separated list of domains from which to accept cross origin requests (browser enforced)
  --graphql.vhosts value              Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (default: "localhost")
  --rpc.gascap value                  Sets a cap on gas that can be used in eth_call/estimateGas (0=infinite) (default: 25000000)
  --rpc.txfeecap value                Sets a cap on transaction fee (in ether) that can be sent via the RPC APIs (0 = no cap) (default: 1)
  --rpc.allow-unprotected-txs         Allow for unprotected (non EIP155 signed) transactions to be submitted via RPC
  --jspath loadScript                 JavaScript root path for loadScript (default: ".")
  --exec value                        Execute JavaScript statement
  --preload value                     Comma separated list of JavaScript files to preload into the console

NETWORKING OPTIONS:
  --bootnodes value                   Comma separated enode URLs for P2P discovery bootstrap
  --discovery.dns value               Sets DNS discovery entry points (use "" to disable DNS)
  --port value                        Network listening port (default: 30303)
  --maxpeers value                    Maximum number of network peers (network disabled if set to 0) (default: 50)
  --maxpendpeers value                Maximum number of pending connection attempts (defaults used if set to 0) (default: 0)
  --nat value                         NAT port mapping mechanism (any|none|upnp|pmp|extip:<IP>) (default: "any")
  --nodiscover                        Disables the peer discovery mechanism (manual peer addition)
  --v5disc                            Enables the experimental RLPx V5 (Topic Discovery) mechanism
  --netrestrict value                 Restricts network communication to the given IP networks (CIDR masks)
  --nodekey value                     P2P node key file
  --nodekeyhex value                  P2P node key as hex (for testing)

MINER OPTIONS:
  --mine                              Enable mining
  --miner.threads value               Number of CPU threads to use for mining (default: 0)
  --miner.notify value                Comma separated HTTP URL list to notify of new work packages
  --miner.notify.full                 Notify with pending block headers instead of work packages
  --miner.gasprice value              Minimum gas price for mining a transaction (default: 1000000000)
  --miner.gastarget value             Target gas floor for mined blocks (default: 8000000)
  --miner.gaslimit value              Target gas ceiling for mined blocks (default: 8000000)
  --miner.etherbase value             Public address for block mining rewards (default = first account) (default: "0")
  --miner.extradata value             Block extra data set by the miner (default = client version)
  --miner.recommit value              Time interval to recreate the block being mined (default: 3s)
  --miner.noverify                    Disable remote sealing verification

GAS PRICE ORACLE OPTIONS:
  --gpo.blocks value                  Number of recent blocks to check for gas prices (default: 20)
  --gpo.percentile value              Suggested gas price is the given percentile of a set of recent transaction gas prices (default: 60)
  --gpo.maxprice value                Maximum gas price will be recommended by gpo (default: 500000000000)

VIRTUAL MACHINE OPTIONS:
  --vmdebug                           Record information useful for VM and contract debugging
  --vm.evm value                      External EVM configuration (default = built-in interpreter)
  --vm.ewasm value                    External ewasm configuration (default = built-in interpreter)

LOGGING AND DEBUGGING OPTIONS:
  --fakepow                           Disables proof-of-work verification
  --nocompaction                      Disables db compaction after import
  --verbosity value                   Logging verbosity: 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=detail (default: 3)
  --vmodule value                     Per-module verbosity: comma-separated list of <pattern>=<level> (e.g. eth/*=5,p2p=4)
  --log.json                          Format logs with JSON
  --log.backtrace value               Request a stack trace at a specific logging statement (e.g. "block.go:271")
  --log.debug                         Prepends log messages with call-site location (file and line number)
  --pprof                             Enable the pprof HTTP server
  --pprof.addr value                  pprof HTTP server listening interface (default: "127.0.0.1")
  --pprof.port value                  pprof HTTP server listening port (default: 6060)
  --pprof.memprofilerate value        Turn on memory profiling with the given rate (default: 524288)
  --pprof.blockprofilerate value      Turn on block profiling with the given rate (default: 0)
  --pprof.cpuprofile value            Write CPU profile to the given file
  --trace value                       Write execution trace to the given file

METRICS AND STATS OPTIONS:
  --metrics                           Enable metrics collection and reporting
  --metrics.expensive                 Enable expensive metrics collection and reporting
  --metrics.addr value                Enable stand-alone metrics HTTP server listening interface (default: "127.0.0.1")
  --metrics.port value                Metrics HTTP server listening port (default: 6060)
  --metrics.influxdb                  Enable metrics export/push to an external InfluxDB database
  --metrics.influxdb.endpoint value   InfluxDB API endpoint to report metrics to (default: "http://localhost:8086")
  --metrics.influxdb.database value   InfluxDB database name to push reported metrics to (default: "geth")
  --metrics.influxdb.username value   Username to authorize access to the database (default: "test")
  --metrics.influxdb.password value   Password to authorize access to the database (default: "test")
  --metrics.influxdb.tags value       Comma-separated InfluxDB tags (key/values) attached to all measurements (default: "host=localhost")

ALIASED (deprecated) OPTIONS:
  --nousb                             Disables monitoring for and managing USB hardware wallets (deprecated)
  --rpc                               Enable the HTTP-RPC server (deprecated and will be removed June 2021, use --http)
  --rpcaddr value                     HTTP-RPC server listening interface (deprecated and will be removed June 2021, use --http.addr) (default: "localhost")
  --rpcport value                     HTTP-RPC server listening port (deprecated and will be removed June 2021, use --http.port) (default: 8545)
  --rpccorsdomain value               Comma separated list of domains from which to accept cross origin requests (browser enforced) (deprecated and will be removed June 2021, use --http.corsdomain)
  --rpcvhosts value                   Comma separated list of virtual hostnames from which to accept requests (server enforced). Accepts '*' wildcard. (deprecated and will be removed June 2021, use --http.vhosts) (default: "localhost")
  --rpcapi value                      API's offered over the HTTP-RPC interface (deprecated and will be removed June 2021, use --http.api)

MISC OPTIONS:
  --snapshot                          Enables snapshot-database mode (default = enable)
  --bloomfilter.size value            Megabytes of memory allocated to bloom-filter for pruning (default: 2048)
  --help, -h                          show help
  --catalyst                          Catalyst mode (eth2 integration testing)
  --override.berlin value             Manually specify Berlin fork-block, overriding the bundled setting (default: 0)


COPYRIGHT:
   Copyright 2013-2021 The go-ethereum Authors

如果你要使用浏览器来访问的话,就要强制指定--http.corsdomain选项,否则的话由于JavaScript调用的同源限制,请求会失败。

geth  --http --http.addr 127.0.0.1 --http.port 10070 --http.api "personal,db,eth,net,web3" --http.corsdomain "http://localhost:10070" -datadir DataDir --dev console 2>> eth.log

然后我们就可以用Postman来测试上面的HTTP-RPC服务了。

请求的json数据为:

{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":67}

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Copyright © OneZos all right reserved,powered by Gitbook本书发布时间: 2021-06-29 09:57:42

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