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lib: fix 499 response when no remote node is available

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This commit is contained in:
Oscar Mira 2024-03-03 12:48:28 +01:00
parent da50496271
commit 7f167fb145
1 changed files with 36 additions and 47 deletions
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83
lib/android/src/main/kotlin/im/molly/monero/RemoteNodeClient.kt
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@ -112,6 +112,23 @@ class RemoteNodeClient private constructor(
header: String?,
body: ByteArray?,
): Response {
val headers = parseHttpHeader(header)
val contentType = headers["Content-Type"]?.toMediaType()
// TODO: Log unsupported headers
val requestBuilder = with(Request.Builder()) {
when {
method.equals("GET", ignoreCase = true) -> {}
method.equals("POST", ignoreCase = true) -> {
val content = body ?: ByteArray(0)
post(content.toRequestBody(contentType))
}
else -> throw IllegalArgumentException("Unsupported method")
}
url("http:$path")
// TODO: Add authentication
}
val attempts = mutableMapOf<Uri, Int>()
while (true) {
@ -119,7 +136,12 @@ class RemoteNodeClient private constructor(
if (selected == null) {
logger.i("No remote node available")
return Response.Builder().code(499).build()
return Response.Builder()
.request(requestBuilder.build())
.protocol(Protocol.HTTP_1_1)
.code(499)
.message("No remote node available")
.build()
}
val uri = selected.uriForPath(path)
@ -128,14 +150,9 @@ class RemoteNodeClient private constructor(
delay(retryBackoff.waitTime(retryCount))
val response = try {
executeCall(
method = method,
uri = uri,
username = selected.username,
password = selected.password,
header = header,
body = body,
)
val request = requestBuilder.url(uri.toString()).build()
httpClient.newCall(request).await()
} catch (e: IOException) {
logger.e("HTTP: Request failed", e)
// TODO: Notify loadBalancer
@ -151,33 +168,6 @@ class RemoteNodeClient private constructor(
}
}
private suspend fun executeCall(
method: String?,
uri: Uri,
username: String?,
password: String?,
header: String?,
body: ByteArray?,
): Response {
val headers = parseHttpHeader(header)
val contentType = headers["Content-Type"]?.toMediaType()
// TODO: Log unsupported headers
val request = with(Request.Builder()) {
when {
method.equals("GET", ignoreCase = true) -> {}
method.equals("POST", ignoreCase = true) -> {
val content = body ?: ByteArray(0)
post(content.toRequestBody(contentType))
}
else -> throw IllegalArgumentException("Unsupported method")
}
// TODO: Add authentication
url(uri.toString())
build()
}
return httpClient.newCall(request).await()
}
private fun parseHttpHeader(header: String?): Headers =
with(Headers.Builder()) {
header?.splitToSequence("\r\n")
@ -186,18 +176,17 @@ class RemoteNodeClient private constructor(
build()
}
private suspend fun Call.await() =
suspendCoroutine { continuation ->
enqueue(object : Callback {
override fun onResponse(call: Call, response: Response) {
continuation.resume(response)
}
private suspend fun Call.await() = suspendCoroutine { continuation ->
enqueue(object : Callback {
override fun onResponse(call: Call, response: Response) {
continuation.resume(response)
}
override fun onFailure(call: Call, e: IOException) {
continuation.resumeWithException(e)
}
})
}
override fun onFailure(call: Call, e: IOException) {
continuation.resumeWithException(e)
}
})
}
// private val Response.roundTripMillis: Long
// get() = sentRequestAtMillis() - receivedResponseAtMillis()