# HTTP Transport \[A function to create a HTTP Transport for a Client] The `http` Transport connects to a JSON-RPC API via HTTP. ## Import ```ts twoslash // @twoslash-cache: {"v":2,"hash":"151c701dd47e085995808de372f08bf00ea7116e69400eedf841b6e414b2c6dc","data":"N4Igdg9gJgpgziAXAbVAFwJ4AcZJACwgDcYAnEAGhDRgA808AKAQwBsBLZuASgAIAzAK5gAxmnYQwvfGjRYAPKSwiAyiPwwAts150aYKHF4AlZWo3beAH17DY/dmBhReAXlsGYDp1Aq9SzADuuvQwBkYARhAQrDDMUu78bHAwAHyMgqSsAPyIvHBopI4A5tYe9o7OfiKSDsW5vAASslgAKgFgcFgQpGgAwrXsxYpm6lrMfgGBqdx5zXLt8V09aCOqY9qTQakAOmDsmt290i2U1MzFCCjIILBwIkVY4pJnfaRxNEY6ja2tAAq8QpLI5oQH4ZigmpgJxiIxoCC8HQAKRUAHkAHIAWmMfz6vAAgn8AJIAOhAAF1yVQCsxekgAJxUWJgYpofBIAAsVDQtOKMAYiAIpyZlSQAAYqOpacwxGQGQBfKkgGqwPAHEG8YAnOS8eUCUgQTS8ADkRHYWmNZ00/OYSFAejCcAkYDwaAQ8vlQA==="} import { http } from 'viem' ``` ## Usage ```ts twoslash {4} // @twoslash-cache: {"v":2,"hash":"4779df2b11196f685f84b3736a57ef846cc59c92abfe48681fde6297ed25fc5a","data":"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"} import { createPublicClient, http } from 'viem' import { mainnet } from 'viem/chains' const client = createPublicClient({ chain: mainnet, transport: http('https://1.rpc.thirdweb.com/...'), // [!code focus] }) ``` :::warning\[Warning] If no `url` is provided, then the transport will fall back to a public RPC URL on the chain. It is highly recommended to provide an authenticated RPC URL to prevent rate-limiting. ::: ### Batch JSON-RPC The `http` Transport supports Batch JSON-RPC. This means that multiple JSON-RPC requests can be sent in a single HTTP request. The Transport will batch up Actions over a given period and execute them in a single Batch JSON-RPC HTTP request. By default, this period is a [zero delay](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Event_loop#zero_delays) meaning that the batch request will be executed at the end of the current [JavaScript message queue](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Event_loop#queue). Consumers can specify a custom time period `wait` (in ms). You can enable Batch JSON-RPC by setting the `batch` flag to `true`: ```ts twoslash // @twoslash-cache: {"v":2,"hash":"2f1023b5c5f24e8246671cd294fd685b50157a7126606e470c7d969583a23dc7","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { batch: true // [!code focus] }) ``` Now when you invoke Actions, the `http` Transport will batch and send over those requests at the end of the message queue (or custom time period) in a single Batch JSON-RPC HTTP request: ```ts twoslash // @twoslash-cache: {"v":2,"hash":"9c523dc5e87738d7ce6494ce92e1e51e75dd6f8064ddc635ac644b3a533765e2","data":"N4Igdg9gJgpgziAXAbVAFwJ4AcZJACwgDcYAnEAGhDRgA808BjCMONAAgCMAbCRgawByAVwC2nMoi4BLAObSwDKmwCGpBogAcmqtxhhZafEgCMJqmjWyYGkDz5CxE8roW5E5kI3xqVjGuSIAOwAvhTo2O4ExGSU1HS2zKwcnCrcKmCMMFKccgpKIKrqpgAMnnoGRkhBFlY2eKnpmbiuYO6e3r7+sYgATCVhETh4hCQu8fRMLGzs+nCCKqLZ7ADiNgCirAtLAEo2wqRgACqRcUUaZiW6+obGwbWk1rZz2y0g3G6mVJ2kfgFIvQAnINqKdENExnEaJNwUQ1OwAAqkCCiaRwZZIlFomAAYWmaFIwn8EHGUD4CHBeywpHg+jQcHYRhg7GYoiwejQ0hY7AgADN2BkBXAMJl8MjIMIGRAcL9OSwzpZih5ejV3jcqvdqHVbJjUei4h82l8vD5ft1AgAWABsIMww3Bo1iFgSeAAFEsjNAAJSI5F63H4wnE0gAOjS3AAPMhddiI7l5IoAHwUX1Y9FxvJJlMx9NrNCbeaLGB7NAHY6RRMAXUTrrh3GE8Ck0b9sfj+WTqf9GYTaA7OZgEbzBdeJbLJxwVa9Un7UbbihTc7QKaHWyLo8O45g1fYroA1CYeWNeCooF64mTGBSQDiaSoaAyVJ3sYyfBw0ewaXAINwSFB2AB3aQjAFMABVIX4MB5flP2Ebh6QA/B9AFbhuCgl9mWpYhpFgP9+zgAAdMBP2/EgUxJD8YAAKxgbo/3/RDQIySD+3Yd8aWo2iQyhFRZApZBkBALBfFEOI6wbBkAEFGPAlRIL5J90TgLjKwoASaVLQ4ECoCT2Daf8FJgZSVMKRULgAZgAVmuSo7jMh4njwcMDU+DxvlNP4egsi1bTBCEnQmRJ8RZD46SkYBCPYSKBUYZhhEUKQ4tgXk3CgABuCKotSNBvAAfjCjKoqi0RYM5RhwzyrgIG/GBBQAH19GxOV5DAIwAWRK6QypQgAhO9vAAeSwOVWETdh6sSmBkraNKCvYEIxvYCappgGbQKisrvBgI5pCWKQwCcMh0rWyKYukLA9hPCreTSdEFvC47CoogBHcS0Aq10hN+D0yDgKQcUYM69he+A0ARYSbB+n0AF5Rpnf7AZgYG2HXcsJyOwr5vGsAkpS9H1p8BR8oewr7AEdZaHZEkfqJx7aYok8WG4SCkpUEqabpjnbzJMAmd0ospHwkB1iZUg4DKsBBbxjnaa5xnIIObgBYINA0CwX6AHp1ZsRDRfFkMuUl2bpai2WecglQsGkABVUhFfYQX8BVtXEE1i3pBDbWfr1rl1bdw3ibpkIpceoOjaikMI/YEwrXYUQqfYCOQ2DwqxmkZqAAkVDgfAKpxAmwAANTINOMEz7OADFQKxnHpuD0OHsT9grU0WP48T4OEn0KApAjJIZkYELFFmegu4Ze6Ofb2b5oAMnYcm/jB9RpDSCNE8TGteTAKRXQH6RQvYHFB7QVeI8TaHRt3ulz4Po+T5DRMjpCBU1AuC07LVGykCtez6nBS/FGckaPobkuj/D6D5e0flxjQlsB9ZEMpMA+ieN1XgAgRDiEkDuKwcAKp5hQQ4dBzhF5FgCAyauk0UrXxnHg1BjgMGkBRpuRM55yR4BRgyJkukDqkDQpwuOMwaRZCHqTfg7B0T6BDIRQiABadgAARckUhHaqw1urIge9RAhmzurC8cBfb+C5KwdWWBhA8E6urZBtDCFkBkXPWgix2SNnYMo52mtVACDMWgAAXiGVkFigL4FMerf8MAiCiDURo9WBIYAwHVqIFQCgtb2LZHoPRIi4AAH1eQ2G8AoWQ0j0m2IAFIAGV+qCGkTsBEOJ2CtW1tAX67BkAAANtYZJEdY0gzTKyuhcaoz2NIxAhhJLILWYAdGhJgLwGUejdG+0tnoyiX4wDSNIFgRg6sADEbSRH7XoWeWovEkD8UEsJOI2D2CyOAAAAUNKImhBDuHEO+qLJ+Kk1L7E0nEI4iEuH0N4b8kRIZ2A3LuasGw+C0HcMYZEN5qkQB0AcXoOIO0sAkg4MAFkt4aAIlMR8Rgh897zmcU7Oa7BeR+nYAAcnUTAUQVLCKovRSC2OCSwBtA4PNClKJqW0vCZ0BQcAGUS0yEFf+HAoZYpqjivFnVCV0ldOPFk+cpDxIUByigGUCQZDgGi9QSinaui9JqsAIQvSET7ikKx3D2CSpUP+BJHBxUhksY8+hRrCKayboCC0/QwAgErMZc4pgLJXA/rcUwFof62FdVC+hgD3C9BAWaMBwJwigkgY6aBLo/5iqPuzSKfhYrxUWtjChtdZpZVygWx6xU4KdXKjkKqeg6oNRViXNqHUurcF6tlfAg1hpwFGuQ5aq0MYLSWrjWaG1ELbV2n85wwdTrnRqlAK6N1mT1SVTLRGr13qfRIdTA+AMV1I1BuDUhVCWzpnhqe16MK0ZTwnWW0dS6VUgrDpFER5NKY0lFjWzmq65bsBZmzD9Adjam15mAfm9shYizFhkf2xsd0MzNotW2Ss+kuy1gh72EBkMocKlB82lsbZ2wdk7VRbsPZ4YyPrCA8zpCEeNvXDmbG6aN2jq3GkCcI7JyiqnDOWcc5/XzkXUgJcy74Ers+muK067B0bs3HjzJJ4PU7tjHulrgpEo4JpqAY9P18aTk+2e89/CL05CvNeG8t47nFX9W+a9r7iuvvKxQd8H6ESfsoUypgghhoqBGxA38tSPF/l4I+CakDvx+B5QIvQIFRCzVCHNIA4HSjIIg9gyC0gZCyNvbBUg8H5eaM8iGosr1pgHKVpoWQH0wGYVQXRbDPmsHQlwMrWQ0KChPFAT8DIFAARgO7KRKz5GKJJSonDfKtH4B0eSfRg7jGyo2Xl+rMBillIqVUmpdTPSGabK0owGSNsFZgN03pVGcMDJgEMkZYyJkkGmT9Rbl4mOLOWas9ZWy2lPEaBdg5WojkoA+fE0g/AtIgAAJoQGECyQUSQxgcE4YD5ojIICzBFqWoCDJALARabyEk8T8wiyu9hzWc3tFzOEJyD4nJ4Dq2J6QUnwsdZekkSK5pPP6QWqCujnrdqHVAVyxC7rMAd5HxTEq/rg2pBUpKLQCSJQcS8iCICbQ0c5EWk4ICPXmgrRWk4BZMyZkSjrHWCoa0KgTCaDMpoXovJegWRMDAKlJqv20KODxBXcAVDZOFWa/nyQuubYknAdnZBbXkpJ3eKPpBXSC5gOa8Z6s4NWhDD63ogtCI8+aQG+FB6RJUAuVc25Ch7ni82xV0hcKPkaVYN8wFEuAXMjl/AIboEQnuxBRXsAVe0C9U241+vCLkmOJRWyZlmLGDYpgLisxBLpfTawGS7loheUaOFUy9QLK1XspsOvylNLIkCtYMKkP/cj4x7n9Khfa2PNoEVRlc/qq2Uaq1b8Vgeq0AGtVkaiasHqKqHsnjHvao6rpnSC6tXhdi/mtB3nAI0orsrqrurprpoNrrrvrprkbibmbhblbjbnbg7k7i7m7h7j5qnl6iYCUHQfQQwYwUwSUKBK6D3meIGn5i/AFqqMFhqLQdGngOds0DFogHFu5OaEgGmkMCljENmjCBlphAghgD6IgY0s0krgACTABsCSYGAhAF4tasLgg/Lt5QADad5t7RTFpoBcRcFKgmCAhBbqh3CqiKgOTghqGiHiGgI9C9BJbpp2iyGQjOgKE6aObgaFRFrw4lqToVoPRVqiaRF0x1qlSNqVTVStpIiNQdrtT1rdq9oDRDSGJDpybloKZPojpToPQzpbQ7TLB7KLrTonoXRrpSDXTcC3RbrGY0hnr7oXpHq3pAyvS16Qy2qwzXoDhDG7ogyNbeYPSYylryZjr4xsoAaZS0I/q8B/qNLbrSwkYgaTSsxwTrGQZAboYwbzqCwJ6IYSwgACZnFoa8wKxYY3aawDK3EMYsZEb0zcy8xuzkavEzauyWy0Y6yfE+x+z3HGYYwPFzRwlcYxxxy8bqYcxCalwia5zibFzCYVxVxLHlErGRQcaRTKYtzIlqb8azQGbaZ5p6bDw0DYxGYQYmZ1zsDmb2KWYvzLyRi2auibzbwRFP5eauZHzubOanyPzPxKgu7OGfyhaCF/zRatDuBRomi+GJbJYjByFpYKGZbKFIIbCrjzqujFbgr5jGkL4DFVbjEGSDhGmFi7DtZMIsKXh4B5gMjUg7RqCQSXHMgs5iI4AAzJQrQCjmGDZc62IKKXj/6uIRJ0rzbvZ6JzDLYlEWIOmvC2LzwpJOKU7qzuL8CeI+J+LyBGBBIhJhLxnhLRKxIH5JJIpM5zDcSg4nI0gQ5Q5xA4jhgMjNI0hjDohJ4YD3hejNI8igTrCCAlLsBWxgDSD9lpDsB7Bfg/jR54iKApqY5wZ9k/TMjEQrmCydZqGbmcJekQ6QQTlTl+nKRF5nKl6PAMjl5goriOlWlfSVZwBj7qRljQ6vA8g8LNL7QoSjlpy6QQAcDE6JTAqgqV7mnDhrjOmwqF4CSIo5lT6/4sp353gP5L5P4pguLH48qn50o77T576YoH4coEWb5EX8r5xCrjbhE36SqYUyo4VHzwEnTvoUU2Ce6Mjf66roqxmAFUFX76aWngEi5OpHwwEWkvkcVhkWFIEK5K5QC9AmCWRq7dRqXG5BAWi0GAhBBBAWS9BmRWjrCmVQC65vxmTlwmByLlyhpBDdSUGmrUHp5UoVmaLaxUoBpBr+Z9AWS8EuGlCKkgBPBwVLCiFqnxaSGIDSEZrBH+QwJuhKHZYqEKXy7sAaG0DaG6F5IGGulXgSThmWFoBY5PBzyTl8xLCx6hjSkaAqhykhZuHaiOQlVIFRXJoJYAhJbGTMCwB4BeqmFcBTIQD6SAQoRiJdwChiJ5J6DsCFH4DsClLlKVLVLsDpxHBHAIjPSvTHm/J7apjqKwChiiVNIdLcILgS4pgvBFiVgSWQH9hhgoSujICv7SWxp0LODCVrTOrCFZCKoZWd7KW0CqXqUWSaXaWcC6X6WGXGWmXmVWiWWcDWW2X2WOXOVzTGrvV6YyURWS6YpqEg1g0aW8haXRzQ16UlAGVGUmVmUWVWVm5o0OUlBOVUpY0mqVjA4egqBICgCaZwCGJ4D0ggAhAhBAA="} import { createPublicClient, http } from 'viem' import { mainnet } from 'viem/chains' const client = createPublicClient({ chain: mainnet, transport: http('https://1.rpc.thirdweb.com/...'), }) // ---cut--- // The below will send a single Batch JSON-RPC HTTP request to the RPC Provider. const [blockNumber, balance, ensName] = await Promise.all([ client.getBlockNumber(), client.getBalance({ address: '0xd2135CfB216b74109775236E36d4b433F1DF507B' }), client.getEnsName({ address: '0xd2135CfB216b74109775236E36d4b433F1DF507B' }), ]) ``` ## Parameters ### url (optional) * **Type:** `string` * **Default:** `chain.rpcUrls.default.http[0]` URL of the JSON-RPC API. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"d35fa4a6d51bd6b708c898c2fc2768bc1fb015d2181de16ceebc9ccbad64f77e","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...') ``` ### batch (optional) * **Type:** `boolean | BatchOptions` * **Default:** `false` Toggle to enable Batch JSON-RPC ```ts twoslash // @twoslash-cache: {"v":2,"hash":"2f1023b5c5f24e8246671cd294fd685b50157a7126606e470c7d969583a23dc7","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { batch: true // [!code focus] }) ``` ### batch.batchSize (optional) * **Type:** `number` * **Default:** `1_000` The maximum number of JSON-RPC requests to send in a batch. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"0255fceeaf0ad1ec96ffdd6cea323c5bee505832f79712241e35aac00af7cc35","data":"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="} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { batch: { batchSize: 2_000 // [!code focus] } }) ``` ### batch.wait (optional) * **Type:** `number` * **Default:** `0` ([zero delay](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Event_loop#zero_delays)) The maximum number of milliseconds to wait before sending a batch. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"8459a02ccaf284223e16c2474a796ae5318bfd0964a6e3e61f03c492f27a2db5","data":"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="} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { batch: { wait: 16 // [!code focus] } }) ``` ### fetchOptions (optional) * **Type:** [`RequestInit`](https://developer.mozilla.org/en-US/docs/Web/API/fetch) [Fetch options](https://developer.mozilla.org/en-US/docs/Web/API/fetch) to pass to the internal `fetch` function. Useful for passing auth headers or cache options. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"829a663bf730d4287e7a5339525768157f597df8ff803ac0b4ca98fabe076997","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { fetchOptions: { // [!code focus:5] headers: { 'Authorization': 'Bearer ...' } } }) ``` ### key (optional) * **Type:** `string` * **Default:** `"http"` A key for the Transport. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"71484985949f2950febbec8455a238ddf5e1fe31ca0e6f02aca0c3cb77153370","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { key: 'alchemy', // [!code focus] }) ``` ### methods (optional) * **Type:** `{ include?: string[], exclude?: string[] }` Methods to include or exclude from sending RPC requests. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"53ec98d17faf354f4c95207de902cba4793bf2e845dfb6ba444059471e6a7514","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { methods: { include: ['eth_sendTransaction', 'eth_signTypedData_v4'], }, }) ``` ### name (optional) * **Type:** `string` * **Default:** `"HTTP JSON-RPC"` A name for the Transport ```ts twoslash // @twoslash-cache: {"v":2,"hash":"9be4c313cb7f734caa5879712b3b668a0a6c143541ecced11fcc1b78119ba639","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { name: 'Alchemy HTTP Provider', // [!code focus] }) ``` ### onFetchRequest (optional) * **Type:** `(request: Request) => void` A callback to handle the fetch request. Useful for logging or debugging. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"4e55cb91f1b087bbba666771b2f4fa0dfb574f22b37ce0bc482f98e1480e673e","data":"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="} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { onFetchRequest(request) { console.log(request) // [!code focus] } }) ``` ### onFetchResponse (optional) * **Type:** `(response: Response) => void` A callback to handle the fetch response. Useful for logging or debugging. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"ac8a5d92b9d9001658477c06b77d0e5a8a585b346267cc63a01e1bb564d2af43","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { onFetchResponse(response) { console.log(response) // [!code focus] } }) ``` ### retryCount (optional) * **Type:** `number` * **Default:** `3` The max number of times to retry when a request fails. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"49e93118dff91ad1f8617278e47e80fc7d10a52e47bdfd5bc595f1ae97316025","data":"N4Igdg9gJgpgziAXAbVAFwJ4AcZJACwgDcYAnEAGhDRgA808BjCMONAAjVIENWsJSaROwASaNFgAqPPgLQAeAK5hYAMwCWYGFArtV3ADZwYAPkog23QUgBsVAzDABzNPiQBOKmitOYDRNQycPzW9pq4iAAMVIz4VtyMNOSINgC+FOjYEQTEZOY09HgAFIbq3HAAlOz44lhKKjAaWjp6hsYmRYqkBgD8wmykmk7sAD7symrhLcxgGk59orXSvMFyAMIsc/WTzbr6RqYVwmISy7KC241Te22mADpg6gC2IRw1EvncTggoyCCwcEYgywaHULHMa1IMG4NDg7G4okkkgACpwgq9OHEODMtIk4WgIPD2AApADKAHkAHIAWgASsi1uwAILIgCSADoQABdLlUSzWRAARgAHPZHC43IgACxeHx+PDvLDmAzhJDRECxeKJPJC4XpTI4BW5cheOj+EBFLCkCA4QQYKpQrgYDbKNALMCKJ4AIzIo3GDSa2nMUAgjB+IEk+Bg7Ce3Fo7A93t9EFUnGe8E4hMdpAwnL53gFNkFYucriQgvVBd85uzzogruVqqFMTiPG1yQATKleRroNkZmw0SsMQBeaq1IoAckVcEQAHo54L2aQsIx2a51KQoAB3GBe9nMJ5z9knye6YAPdjsWsusBCdgAVl0C/YyAAhMxYHpQ4o4FyHqkFTmE8fjcEgoBmo4cBgmAeBoAgqSpEAA"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { retryCount: 5, // [!code focus] }) ``` ### retryDelay (optional) * **Type:** `number` * **Default:** `150` The base delay (in ms) between retries. By default, the Transport will use [exponential backoff](https://en.wikipedia.org/wiki/Exponential_backoff) (`~~(1 << count) * retryDelay`), which means the time between retries is not constant. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"12030b12be213e4d9046c09d3309b53d2ff3d2626ea712b6fb33ea471c38b7ab","data":"N4Igdg9gJgpgziAXAbVAFwJ4AcZJACwgDcYAnEAGhDRgA808BjCMONAAjVIENWsJSaROwASaNFgAqPPgLQAeAK5hYAMwCWYGFArtV3ADZwYAPkog23QUgBsVAzDABzNPiQBOKmitOYDRNQycPzW9pq4iAAMVIz4VtyMNOSINgC+FOjYEQTEZOY09HgAFIbq3HAAlOz44lhKKjAaWjp6hsYmRYqkBgD8wmykmk7sAD7symrhLcxgGk59orXSvMFyAMIsc/WTzbr6RqYVwmISy7KC241Te22mADpg6gC2IRw1EvncTggoyCCwcEYgywaHULHMa1IMG4NDg7G4okkkgACpwgq9OHEODMtIk4WgIPD2AApADKAHkAHIAWgASsi1uwAILIgCSADoQABdLlUSzWRAARgAHPZHC43IgACxeHx+PDvLDmAzhJDRECxeKJPJC4XpTI4BW5cheOj+EBFLCkCA4QQYKpQrgYAAiMAM3AwCzAiieACMyKNxg0mtpzFAIIwfiBJPgYOxfeU47B3Rh2EVNOwnpV434AO4wRzsR2DeCcvneAU2QVi5yuJCC9UV3zm4sut0e5WqoUxOI8bXJABMqV5Gug2RmbDRKwxAF5qrUigByRVwRAAejXgvZpCwjHZrnUpCg+d97OYTzX7Kvi90wAe7CLflIbZTwgb0XYG/YyAAhMxYHoEaKHAXIPKkFTmE8fjcEgoBmo4cBgmAeBoAgqSpEAA=="} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { retryDelay: 100, // [!code focus] }) ``` ### timeout (optional) * **Type:** `number` * **Default:** `10_000` The timeout for requests. ```ts twoslash // @twoslash-cache: {"v":2,"hash":"314cdbec32b0ad33a870a42eb3fd765981882ff6f8bc8b03194c5597719840c4","data":"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"} import { http } from 'viem' // ---cut--- const transport = http('https://1.rpc.thirdweb.com/...', { timeout: 60_000, // [!code focus] }) ```